Manufacture of ASTM A182, ASME SA182 Alloy Steel, Stainless Steel Forged Rolled Bars, Fittings, Flanges, Valves, Parts
Manufacturer of ASTM A-182, ASME SA-182 Alloy Steel, Stainless Steel Forged Rolled Bar, Fitting, Flange, Valve, Part
Designation: A182/A182M − 12a Endorsed by Manufacturers Standardization
Society of the Valve and Fittings Industry
Used in USDOE-NE Standards
Standard Specification for
Forged or Rolled Alloy and Stainless Steel Pipe Flanges,
Forged Fittings, and Valves and Parts for High-Temperature
Service1
This standard is issued under the fixed designation A182/A182M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
Note—Table 2 was corrected editorially and the year date changed on August 8, 2012.
- Scope*
1.1 This specification2 covers forged low alloy and stainless
steel piping components for use in pressure systems. Included
are flanges, fittings, valves, and similar parts to specified
dimensions or to dimensional standards, such as the ASME
specifications that are referenced in Section 2.
1.2 For bars and products machined directly from bar (other
than those directly addressed by this specification; see 6.4),
refer to Specifications A479/A479M and A739 for the similar
grades available in those specifications. Products made to this
specification are limited to a maximum weight of 10 000 lb
[4540 kg]. For larger products and products for other
applications, refer to Specifications A336/A336M and A965/
A965M for the similar ferritic and austenitic grades,
respectively, available in those specifications.
1.3 Several grades of low alloy steels and ferritic,
martensitic, austenitic, and ferritic-austenitic stainless steels
are included in this specification. Selection will depend upon
design and service requirements. Several of the ferritic/
austenitic (duplex) grades are also found in Specification
A1049/A1049M.
1.4 Supplementary requirements are provided for use when
additional testing or inspection is desired. These shall apply
only when specified individually by the purchaser in the order.
1.5 This specification is expressed in both inch-pound units
and in SI units. However, unless the order specifies the
applicable “M” specification designation (SI units), the material
shall be furnished to inch-pound units.
1.6 The values stated in either SI units or inch-pound units
are to be regarded separately as the standard. Within the text,
the SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the
standard. - Referenced Documents
2.1 In addition to the referenced documents listed in Specification
A961/A961M, the following list of standards apply to
this specification.
2.2 ASTM Standards:3
A262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
A275/A275M Practice for Magnetic Particle Examination of
Steel Forgings
A336/A336M Specification for Alloy Steel Forgings for
Pressure and High-Temperature Parts
A388/A388M Practice for Ultrasonic Examination of Steel
Forgings
A479/A479M Specification for Stainless Steel Bars and
Shapes for Use in Boilers and Other Pressure Vessels
A484/A484M Specification for General Requirements for
Stainless Steel Bars, Billets, and Forgings
A739 Specification for Steel Bars, Alloy, Hot-Wrought, for
Elevated Temperature or Pressure-Containing Parts, or
Both
1 This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved Aug. 8, 2012. Published August 2012. Originally
approved in 1935. Last previous edition approved in 2012 as A182/A182M–12.
DOI: 10.1520/A0182_A0182M-12a.
2 For ASME Boiler and Pressure Vessel Code applications see related Specification
SA-182 in Section II of that Code.
3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
A763 Practices for Detecting Susceptibility to Intergranular
Attack in Ferritic Stainless Steels
A788/A788M Specification for Steel Forgings, General Requirements
A961/A961M Specification for Common Requirements for
Steel Flanges, Forged Fittings, Valves, and Parts for
Piping Applications
A965/A965M Specification for Steel Forgings, Austenitic,
for Pressure and High Temperature Parts
A1049/A1049M Specification for Stainless Steel Forgings,
Ferritic/Austenitic (Duplex), for Pressure Vessels and
Related Components
E92 Test Method for Vickers Hardness of Metallic Materials
(Withdrawn 2010)4
E112 Test Methods for Determining Average Grain Size
E165 Practice for Liquid Penetrant Examination for General
Industry
E340 Test Method for Macroetching Metals and Alloys
2.3 ASME Boiler and Pressure Vessel Codes:5
Section IX Welding and Brazing Qualifications
2.4 AWS Specifications6
A5.4/A5.4M Specification for Stainless Steel Electrodes for
Shielded Metal Arc Welding
A5.5/A5.5M Specification for Low-Alloy Steel Electrodes
for Shielded Metal Arc Welding
A5.9/A5.9M Specification for Bare Stainless Steel Welding
Electrodes and Rods
A5.11/A5.11M Specification for Nickel and Nickel-Alloy
Welding Electrodes for Shielded Metal Arc Welding
A5.14/A5.14M Specification for Nickel and Nickel-Alloy
Bare Welding Electrodes and Rods
A5.23/A5.23M Specification for Low-Alloy Steel Electrodes
and Fluxes for Submerged Arc Welding
A5.28/A5.28M Specification for Low-Alloy Steel Electrodes
for Gas Shielded Arc Welding
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored
Arc Welding - Terminology
3.1 Definitions—For definitions of terms used in this
specification, refer to Specification A961/A961M.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 hardened condition, n—for F23, the metallurgical
condition achieved after normalizing and cooling to room
temperature but prior to tempering. - Ordering Information
4.1 It is the purchaser’s responsibility to specify in the
purchase order information necessary to purchase the needed
material. In addition to the ordering information guidelines in
Specification A961/A961M, orders should include the following
information:
4.1.1 Additional requirements (see 7.2.1, Table 2 footnotes,
9.3, and 19.2), and
4.1.2 Requirement, if any, that manufacturer shall submit
drawings for approval showing the shape of the rough forging
before machining and the exact location of test specimen
material (see 9.3.1). - General Requirements
5.1 Product furnished to this specification shall conform to
the requirements of Specification A961/A961M, including any
supplementary requirements that are indicated in the purchase
order. Failure to comply with the general requirements of
Specification A961/A961M constitutes nonconformance with
this specification. In case of conflict between the requirements
of this specification and Specification A961/A961M, this
specification shall prevail. - Manufacture
6.1 The low-alloy ferritic steels shall be made by the
open-hearth, electric-furnace, or basic-oxygen process with the
option of separate degassing and refining processes in each
case.
6.2 The stainless steels shall be melted by one of the
following processes: (a) electric-furnace (with the option of
separate degassing and refining processes); (b) vacuumfurnace;
or (c) one of the former followed by vacuum or
electroslag-consumable remelting. Grade F XM-27Cb may be
produced by electron-beam melting.
6.3 A sufficient discard shall be made to secure freedom
from injurious piping and undue segregation.
6.4 The material shall be forged as close as practicable to
the specified shape and size.
6.4.1 Flanges of any type, elbows, return bends, tees, and
header tees shall not be machined directly from bar stock.
6.4.2 Cylindrically-shaped parts may be machined from
forged or rolled solution-annealed austenitic stainless steel bar
without additional hot working.
6.4.3 Cylindrically-shaped low alloy, martensitic stainless,
and ferritic stainless steel parts, NPS-4 [DN 100] and under,
may be machined from forged or rolled bar, without additional
hot working.
6.5 Except as provided for in 6.4, the finished product shall
be a forging as defined in the Terminology section of Specification
A788/A788M. - Heat Treatment7
7.1 After hot working, forgings shall be cooled to a temperature
below 1000 °F [538 °C] prior to heat treating in
accordance with the requirements of Table 1.
4 The last approved version of this historical standard is referenced on
www.astm.org.
5 Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
6 Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
Miami, FL 33126, http://www.aws.org.
7 A solution annealing temperature above 1950 °F [1065 °C] may impair the
resistance to intergranular corrosion after subsequent exposure to sensitizing
conditions in F 321, F 321H, F 347, F 347H, F 348, and F 348H. When specified
by the purchaser, a lower temperature stabilization or resolution annealing shall be
used subsequent to the initial high temperature solution anneal (see Supplementary
Requirement S10).
A182/A182M − 12a
2
TABLE 1 Heat Treating Requirements
Grade Heat Treat Type Austenitizing/Solutioning
Temperature, Minimum
or Range, °F [°C]A
Cooling
Media
Quenching Cool
Below °F [°C]
Tempering Temperature,
Minimum or
Range, °F [°C]
Low Alloy Steels
F 1 anneal 1650 [900] furnace cool B B
normalize and temper 1650 [900] air cool B 1150 [620]
F 2 anneal 1650 [900] furnace cool B B
normalize and temper 1650 [900] air cool B 1150 [620]
F 5, F 5a anneal 1750 [955] furnace cool B B
normalize and temper 1750 [955] air cool B 1250 [675]
F 9 anneal 1750 [955] furnace cool B B
normalize and temper 1750 [955] air cool B 1250 [675]
F 10 solution treat and quench 1900 [1040] liquid 500 [260] B
F 91 normalize and temper 1900-1975 [1040-1080] air cool B 1350–1470 [730–800]
F 92 normalize and temper 1900-1975 [1040-1080] air cool B 1350–1470 [730–800]
F 122 normalize and temper 1900-1975 [1040-1080] air cool B 1350–1470 [730–800]
F 911 normalize and temper 1900-1975 [1040-1080] air cool or liquid B 1365–1435 [740-780]
F 11, Class 1, 2, 3 anneal 1650 [900] furnace cool B B
normalize and temper 1650 [900] air cool B 1150 [620]
F 12, Class 1, 2 anneal 1650 [900] furnace cool B B
normalize and temper 1650 [900] air cool B 1150 [620]
F 21, F 3V, and F
3VCb
anneal 1750 [955] furnace cool B B
normalize and temper 1750 [955] air cool B 1250 [675]
F 22, Class 1, 3 anneal 1650 [900] furnace cool B B
normalize and temper 1650 [900] air cool B 1250 [675]
F 22V normalize and temper or
quench and temper
1650 [900] air cool or liquid B 1250 [675]
F 23 normalize and temper 1900-1975 [1040-1080] air cool
accelerated cool
B 1350–1470 [730–800]
F 24 normalize and temper 1800-1975 [980-1080] air cool
or liquid
B 1350–1470 [730–800]
FR anneal 1750 [955] furnace cool B B
normalize 1750 [955] air cool B B
normalize and temper 1750 [955] air cool B 1250 [675]
F 36, Class 1 normalize and temper 1650 [900] air cool B 1100 [595]
F 36, Class 2 normalize and temper
quench and temper
1650 [900]
1650 [900]
air cool
accelerated air cool
or liquid
B 1100 [595]
1100 [595]
Martensitic Stainless Steels
F 6a Class 1 anneal not specified furnace cool B B
normalize and temper not specified air cool 400 [205] 1325 [725]
temper not required B B 1325 [725]
F 6a Class 2 anneal not specified furnace cool B B
normalize and temper not specified air cool 400 [205] 1250 [675]
temper not required B B 1250 [675]
F 6a Class 3 anneal not specified furnace cool B B
normalize and temper not specified air cool 400 [205] 1100 [595]
F 6a Class 4 anneal not specified furnace cool B B
normalize and temper not specified air cool 400 [205] 1000 [540]
F 6b anneal 1750 [955] furnace cool B B
normalize and temper 1750 [955] air cool 400 [205] 1150 [620]
F 6NM normalize and temper 1850 [1010] air cool 200 [95] 1040-1120 [560-600]
Ferritic Stainless Steels
F XM-27 Cb anneal 1850 [1010] furnace cool B B
F 429 anneal 1850 [1010] furnace cool B B
F 430 anneal not specified furnace cool B B
Austenitic Stainless Steels
F 304 solution treat and quench 1900 [1040] liquid 500 [260] B
F 304H solution treat and quench 1900 [1040] liquid 500 [260] B
F 304L solution treat and quench 1900 [1040] liquid 500 [260] B
F 304N solution treat and quench 1900 [1040] liquid 500 [260] B
F 304LN solution treat and quench 1900 [1040] liquid 500 [260] B
F 309H solution treat and quench 1900 [1040] liquid 500 [260] B
F 310 solution treat and quench 1900 [1040] liquid 500 [260] B
F 310H solution treat and quench 1900 [1040] liquid 500 [260] B
F 310MoLN solution treat and quench 1900–2010 [1050–1100] liquid 500 [260] B
F 316 solution treat and quench 1900 [1040] liquid 500 [260] B
F 316H solution treat and quench 1900 [1040] liquid 500 [260] B
F 316L solution treat and quench 1900 [1040] liquid 500 [260] B
F 316N solution treat and quench 1900 [1040] liquid 500 [260] B
F 316LN solution treat and quench 1900 [1040] liquid 500 [260] B
F 316Ti solution treat and quench 1900 [1040] liquid 500 [260] B
F 317 solution treat and quench 1900 [1040] liquid 500 [260] B
F 317L solution treat and quench 1900 [1040] liquid 500 [260] B
S31727 solution treat and quench 1975–2155 [1080–1180] liquid 500 [260] B
A182/A182M − 12a
3
7.2 Low Alloy Steels and Ferritic and Martensitic Stainless
Steels—The low alloy steels and ferritic and martensitic
stainless steels shall be heat treated in accordance with the
requirements of 7.1 and Table 1. When more than one heat
treatment option is listed for a Grade in Table 1, any one of the
heat treatments listed shall be performed. The selection of the
heat treatment shall be at the manufacturer’s option, unless
otherwise stated in the purchase order.
7.2.1 Liquid Quenching—Except as permitted in 7.2.2, for
F 1, F 2, and F 3, and in 7.2.3, for F 91, and when agreed to by
the purchaser, liquid quenching followed by tempering shall be
permitted provided the temperatures in Table 1 for each grade
are used.
7.2.1.1 Marking—Parts that are liquid quenched and tempered
shall be marked “QT.”
7.2.2 Alternatively, Grade F 1, F 2, and F 12, Classes 1 and
2 may be given a heat treatment of 1200 °F [650 °C] minimum
after final hot or cold forming.
7.2.3 Alternatively, Grade F 91 forged fittings having any
section thickness greater than 3 in. [75 mm], at the time of heat
treatment, shall be normalized and tempered or quenched and
tempered at the manufacturer’s option, provided that the
temperatures in Table 1 for F 91 are used.
7.3 Austenitic and Ferritic-Austenitic Stainless Steels—The
austenitic and ferritic-austenitic stainless steels shall be heat
treated in accordance with the requirements of 7.1 and Table 1.
7.3.1 Alternatively, immediately following hot working,
while the temperature of the forging is not less than the
minimum solution annealing temperature specified in Table 1,
forgings made from austenitic grades (except grades F 304H, F
309H, F 310, F 310H, F 316H, F 321, F 321H, F 347, F 347H,
F 348, F 348H, F 45, and F 56) may be individually rapidly
quenched in accordance with the requirements of Table 1.
7.3.2 See Supplementary Requirement S8 if a particular
heat treatment method is to be employed.
7.4 Time of Heat Treatment—Heat treatment of forgings
may be performed before machining.
7.5 Forged or Rolled Bar—Forged or rolled austenitic
stainless bar from which cylindrically shaped parts are to be
machined, as permitted by 6.4, and the parts machined from
such bar, without heat treatment after machining, shall be
TABLE 1 Continued
Grade Heat Treat Type Austenitizing/Solutioning
Temperature, Minimum
or Range, °F [°C]A
Cooling
Media
Quenching Cool
Below °F [°C]
Tempering Temperature,
Minimum or
Range, °F [°C]
S32053 solution treat and quench 1975–2155 [1080–1180] liquid 500 [260] B
F 347 solution treat and quench 1900 [1040] liquid 500 [260] B
F 347H solution treat and quench 2000 [1095] liquid 500 [260] B
F 347LN solution treat and quench 1900 [1040] liquid 500 [260] B
F 348 solution treat and quench 1900 [1040] liquid 500 [260] B
F 348H solution treat and quench 2000 [1095] liquid 500 [260] B
F 321 solution treat and quench 1900 [1040] liquid 500 [260] B
F 321H solution treat and quench 2000 [1095] liquid 500 [260] B
F XM-11 solution treat and quench 1900 [1040] liquid 500 [260] B
F XM-19 solution treat and quench 1900 [1040] liquid 500 [260] B
F 20 solution treat and quench 1700-1850 [925-1010] liquid 500 [260] B
F 44 solution treat and quench 2100 [1150] liquid 500 [260] B
F 45 solution treat and quench 1900 [1040] liquid 500 [260] B
F 46 solution treat and quench 2010-2140 [1100-1140] liquid 500 [260] B
F 47 solution treat and quench 1900 [1040] liquid 500 [260] B
F 48 solution treat and quench 1900 [1040] liquid 500 [260] B
F 49 solution treat and quench 2050 [1120] liquid 500 [260] B
F 56 solution treat and quench 2050-2160 [1120-1180] liquid 500 [260] B
F 58 solution treat and quench 2085 [1140] liquid 500 [260] B
F 62 solution treat and quench 2025 [1105] liquid 500 [260] B
F 63 solution treat and quench 1900 [1040] liquid 500 [260] B
F 64 solution treat and quench 2010-2140 [1100-1170] liquid 500 [250] B
F 904L solution treat and quench 1920-2100 [1050-1150] liquid 500 [260] B
Ferritic-Austenitic Stainless Steels
F 50 solution treat and quench 1925 [1050] liquid 500 [260] B
F 51 solution treat and quench 1870 [1020] liquid 500 [260] B
F 52C liquid 500 [260] B
F 53 solution treat and quench 1880 [1025] liquid 500 [260] B
F 54 solution treat and quench 1920-2060 [1050-1125] liquid 500 [260] B
F 55 solution treat and quench 2010-2085 [1100-1140] liquid 500 [260] B
F 57 solution treat and quench 1940 [1060] liquid 175 [80] B
F 59 solution treat and quench 1975-2050 [1080-1120] liquid 500 [260] B
F 60 solution treat and quench 1870 [1020] liquid 500 [260] B
F 61 solution treat and quench 1920-2060 [1050-1125] liquid 500 [260] B
F 65 solution treat and quench 1830-2100 [1000-1150] liquidD 500 [260] B
F 66 solution treat and quench 1870–1975 [1020–1080] liquid 500 [260] B
F 67 solution treat and quench 1870–2050 [1020–1120] liquid 500 [260] B
A Minimum unless temperature range is listed.
B Not applicable.
C Grade F 52 shall be solution treated at 1825 to 1875 °F [995 to 1025 °C] 30 min/in. of thickness and water quenched.
DThe cooling media for Grade F 65 shall be quenching in water or rapidly cooling by other means.
A182/A182M − 12a
4
furnished to the annealing requirements of Specification A479/
A479M or this specification, with subsequent light cold drawing
and straightening permitted (see Supplementary Requirement
S3 if annealing must be the final operation). - Chemical Composition
8.1 A chemical heat analysis in accordance with Specification
A961/A961M shall be made and conform to the chemical
composition prescribed in Table 2.
8.2 Grades to which lead, selenium, or other elements are
added for the purpose of rendering the material free-machining
shall not be used.
8.3 Starting material produced to a specification that specifically
requires the addition of any element beyond those
listed in Table 2 for the applicable grade of material is not
permitted.
8.4 Steel grades covered in this specification shall not
contain an unspecified element, other than nitrogen in stainless
steels, for the ordered grade to the extent that the steel
conforms to the requirements of another grade for which that
element is a specified element having a required minimum
content. For this requirement, a grade is defined as an alloy
described individually and identified by its own UNS designation
or Grade designation and identification symbol in Table 2.
8.5 Product Analysis—The purchaser may make a product
analysis on products supplied to this specification in accordance
with Specification A961/A961M. - Mechanical Properties
9.1 The material shall conform to the requirements as to
mechanical properties for the grade ordered as listed in Table 3.
9.2 Mechanical test specimens shall be obtained from production
forgings, or from separately forged test blanks prepared
from the stock used to make the finished product. In
either case, mechanical test specimens shall not be removed
until after all heat treatment is complete. If repair welding is
required, test specimens shall not be removed until after
post-weld heat treatment is complete, except for ferritic grades
when the post-weld heat treatment is conducted at least 50 °F
[30 °C] below the actual tempering temperature. When test
blanks are used, they shall receive approximately the same
working as the finished product. The test blanks shall be heat
treated with the finished product and shall approximate the
maximum cross section of the forgings they represent.
9.3 For normalized and tempered, or quenched and tempered
forgings, the central axis of the test specimen shall
correspond to the 1⁄4 T plane or deeper position where T is the
maximum heat-treated thickness of the represented forging. In
addition, for quenched and tempered forgings, the mid-length
of the test specimen shall be at least T from any second
heat-treated surface. When the section thickness does not
permit this positioning, the test specimen shall be positioned as
near as possible to the prescribed location, as agreed to by the
purchaser and the supplier.
9.3.1 With prior purchase approval, the test specimen for
ferritic steel forgings may be taken at a depth (t) corresponding
to the distance from the area of significant stress to the nearest
heat-treated surface and at least twice this distance (2 t) from
any second surface. However, the test depth shall not be nearer
to one treated surface than 3⁄4 in. [19 mm] and to the second
treated surface than 11⁄2 in. [38 mm]. This method of test
specimen location would normally apply to contour-forged
parts, or parts with thick cross-sectional areas where 1⁄4 T ×
T testing (see 9.3) is not practical. Sketches showing the exact
test locations shall be approved by the purchaser when this
method is used.
9.3.2 Metal Buffers—The required distances from heattreated
surfaces may be obtained with metal buffers instead of
integral extensions. Buffer material may be carbon or low-alloy
steel, and shall be joined to the forging with a partial
penetration weld that seals the buffered surface. Specimens
shall be located at 1⁄2-in. [13-mm] minimum from the buffered
surface of the forging. Buffers shall be removed and the welded
areas subjected to magnetic particle test to ensure freedom
from cracks unless the welded areas are completely removed
by subsequent machining.
9.4 For annealed low alloy steels, ferritic stainless steels,
and martensitic stainless steels, and also for austenitic and
ferritic-austenitic stainless steels, the test specimen may be
taken from any convenient location.
9.5 Tension Tests:
9.5.1 Low Alloy Steels and Ferritic and Martensitic Stainless
Steels—One tension test shall be made for each heat in
each heat treatment charge.
9.5.1.1 When the heat-treating cycles are the same and the
furnaces (either batch or continuous type) are controlled within
625 °F [614 °C] and equipped with recording pyrometers so
that complete records of heat treatment are available, then only
one tension test from each heat of each forging type (see Note
1) and section size is required, instead of one test from each
heat in each heat-treatment charge.
NOTE 1—“Type” in this case is used to describe the forging shape such
as a flange, ell, tee, and the like.
9.5.2 Austenitic and Ferritic-Austenitic Stainless Steel
Grades—One tension test shall be made for each heat.
9.5.2.1 When heat treated in accordance with 7.1, the test
blank or forging used to provide the test specimen shall be heat
treated with a finished forged product.
9.5.2.2 When the alternative method in 7.3.1 is used, the test
blank or forging used to provide the test specimen shall be
forged and quenched under the same processing conditions as
the forgings they represent.
9.5.3 Testing shall be performed as specified in Specification
A961/A961M using the largest feasible of the round
specimens.
9.6 Hardness Tests:
9.6.1 Except when only one forging is produced, a minimum
of two pieces per batch or continuous run as defined in
9.6.2 shall be hardness tested as specified in Specification
A961/A961M to ensure that the forgings are within the
hardness limits given for each grade in Table 3. The purchaser
A182/A182M − 12a
5
TABLE 2 Chemical RequirementsA
Identification
Symbol
UNS
Designation
Grade Composition, %
Carbon Manganese
Phosphorus
Sulfur Silicon Nickel Chromium Molybdenum
Columbium
Titanium
Other
Elements
Low Alloy Steels
F 1 K12822 carbon-molybdenum 0.28 0.60–0.90 0.045 0.045 0.15–0.35 … … 0.44–0.65 … … …
F 2B K12122 0.5 % chromium,
0.5 % molybdenum
0.05–0.21 0.30–0.80 0.040 0.040 0.10–0.60 … 0.50–0.81 0.44–0.65 … … …
F 5C K41545 4 to 6 % chromium 0.15 0.30–0.60 0.030 0.030 0.50 0.50 4.0–6.0 0.44–0.65 … … …
F 5aC K42544 4 to 6 % chromium 0.25 0.60 0.040 0.030 0.50 0.50 4.0–6.0 0.44–0.65 … … …
F 9 K90941 9 % chromium 0.15 0.30–0.60 0.030 0.030 0.50–1.00 … 8.0–10.0 0.90–1.10 … … …
F 10 S33100 20 nickel, 8 chromium 0.10–0.20 0.50–0.80 0.040 0.030 1.00–1.40 19.0–22.0 7.0–9.0 … … … …
F 91 K90901 9 % chromium, 1 %
molybdenum, 0.2 %
vanadium plus
columbium and
nitrogen
0.08–0.12 0.30–0.60 0.020 0.010 0.20–0.50 0.40 8.0–9.5 0.85–1.05 0.06–0.10 … N 0.03–0.07
Al 0.02D
V 0.18–0.25
Ti 0.01D
Zr 0.01D
F 92 K92460 9 % chromium, 1.8 %
tungsten, 0.2 %
vanadium plus
columbium
0.07–0.13 0.30–0.60 0.020 0.010 0.50 0.40 8.50–9.50 0.30–0.60 0.04–0.09 … V 0.15–0.25
N
0.030–0.070
Al 0.02D
W 1.50–2.00
B
0.001–0.006
Ti 0.01D
Zr 0.01D
F 122 K91271 11 % chromium, 2 %
tungsten, 0.2 %
vanadium, plus
molybdenum,
columbium, copper,
nickel, nitrogen, and
boron
0.07–0.14 0.70 0.020 0.010 0.50 0.50 10.00–11.50 0.25–0.60 0.04–
0.10
… V 0.15–0.30
B 0.005
N 0.040–0.100
Al 0.02D
Cu 0.30–1.70
W 1.50–2.50
Ti 0.01D
Zr 0.01D
F 911 K91061 9 % chromium, 1 %
molybdenum, 0.2 %
vanadium plus
columbium and
nitrogen
0.09–0.13 0.30–0.60 0.020 0.010 0.10–0.50 0.40 8.5–9.5 0.90–1.10 0.060–0.10 … W 0.90–1.10
Al 0.02D
N 0.04–0.09
V 0.18–0.25
B 0.0003–
0.006
Ti 0.01D
Zr 0.01D
F 11
Class 1
K11597 1.25 % chromium,
0.5 % molybdenum
0.05–0.15 0.30–0.60 0.030 0.030 0.50–1.00 … 1.00–1.50 0.44–0.65 … … …
F 11
Class 2
K11572 1.25 % chromium,
0.5 % molybdenum
0.10–0.20 0.30–0.80 0.040 0.040 0.50–1.00 … 1.00–1.50 0.44–0.65 … … …
F 11
Class 3
K11572 1.25 % chromium,
0.5 % molybdenum
0.10–0.20 0.30–0.80 0.040 0.040 0.50–1.00 … 1.00–1.50 0.44–0.65 … … …
F 12
Class 1
K11562 1 % chromium,
0.5 % molybdenum
0.05–0.15 0.30–0.60 0.045 0.045 0.50 max … 0.80–1.25 0.44–0.65 … … …
F 12
Class 2
K11564 1 % chromium,
0.5 % molybdenum
0.10–0.20 0.30–0.80 0.040 0.040 0.10–0.60 … 0.80–1.25 0.44–0.65 … … …
F 21 K31545 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 max … 2.7–3.3 0.80–1.06 … … …
F 3V K31830 3 % chromium, 1 %
molybdenum, 0.25 %
vanadium plus boron
and titanium
0.05–0.18 0.30–0.60 0.020 0.020 0.10 … 2.8–3.2 0.90–1.10 … 0.015–
0.035
V 0.20–0.30
B
0.001–0.003
F 3VCb K31390 3 % chromium, 1 %
molybdenum, 0.25 %
vanadium plus boron,
columbium, and
titanium
0.10–0.15 0.30–0.60 0.020 0.010 0.10 0.25 2.7–3.3 0.90–1.10 0.015–0.0700.015 V 0.20–0.30
Cu 0.25
Ca 0.0005–
0.0150
F 22 K21590 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 … 2.00–2.50 0.87–1.13 … … …
Class 1 …
F 22 K21590 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 … 2.00–2.50 0.87–1.13 … … …
Class 3
F 22V K31835 2.25 % chromium, 1 %
molybdenum, 0.25 %
vanadium
0.11–0.15 0.30–0.60 0.015 0.010 0.10 0.25 2.00–2.50 0.90–1.10 0.07 0.030 Cu 0.20
V 0.25–0.35
B 0.002
Ca 0.015E
F 23 K41650 2.25 % chromium,
1.6 % tungsten, 0.25 %
vanadium, plus
molybdenum,
columbium, and boron
0.04–0.10 0.10–0.60 0.030 0.010 0.50 0.40 1.90-2.60 0.05-0.30 0.02–
0.08
0.005–
0.060F
V 0.20–0.30
B 0.0010–
0.006
N 0.015F
Al 0.030
W 1.45–1.75
A182/A182M − 12a
6
TABLE 2 Continued
Identification
Symbol
UNS
Designation
Grade Composition, %
Carbon Manganese
Phosphorus
Sulfur Silicon Nickel Chromium Molybdenum
Columbium
Titanium
Other
Elements
F 24 K30736 2.25 % chromium, 1 %
molybdenum, 0.25 %
vanadium plus titanium
and boron
0.05–0.10 0.30–0.70 0.020 0.010 0.15–0.45 … 2.20–2.60 0.90–1.10 … 0.06-0.10 V 0.20–0.30
N 0.12
Al 0.020
B 0.0015–
0.0070
FR K22035 2 % nickel, 1 % copper 0.20 0.40–1.06 0.045 0.050 … 1.60–2.24 … … … … Cu 0.75–1.25
F 36 K21001 1.15 % nickel,
0.65 % copper,
molybdenum,
and columbium
0.10–0.17 0.80–1.20 0.030 0.025 0.25–0.50 1.00–1.30 0.30 0.25–0.50 0.015–0.045 N 0.020
Al 0.050
Cu 0.50–0.80
V 0.02
Martensitic Stainless Steels
F 6a S41000 13 % chromium
410G
0.15 1.00 0.040 0.030 1.00 0.50 11.5–13.5 … … … …
F 6b S41026 13 % chromium,
0.5 % molybdenum
0.15 1.00 0.020 0.020 1.00 1.00–2.00 11.5–13.5 0.40–0.60 … … Cu 0.50
F 6NM S41500 13 % chromium, 4 %
nickel
0.05 0.50–1.00 0.030 0.030 0.60 3.5–5.5 11.5–14.0 0.50–1.00 … … …
Ferritic Stainless Steels
F XM-
27Cb
S44627 27 chromium, 1
molybdenum
XM-27G
0.010H 0.40 0.020 0.020 0.40 0.50H 25.0–27.5 0.75–1.50 0.05–0.20 … N 0.015H
Cu 0.20H
F 429 S42900 15 chromium
429G
0.12 1.00 0.040 0.030 0.75 0.50 14.0–16.0 … … … …
F 430 S43000 17 chromium
430G
0.12 1.00 0.040 0.030 0.75 0.50 16.0–18.0 … … … …
Austenitic Stainless Steels
F 304 S30400 18 chromium, 8 nickel
304G
0.08 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 … … … N 0.10†
F 304H S30409 18 chromium, 8 nickel
304HG
0.04–0.10 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 … … … …
F 304L S30403 18 chromium, 8 nickel,
low carbon
304LG
0.030 2.00 0.045 0.030 1.00 8.0–13.0 18.0–20.0 … … … N 0.10†–0.16
F 304N S30451 18 chromium, 8 nickel,
modified with nitrogen
304NG
0.08 2.00 0.045 0.030 1.00 8.0–10.5 18.0–20.0 … … … N 0.10†–0.16
F 304LN S30453 18 chromium, 8 nickel,
modified with nitrogen
304LNG
0.030 2.00 0.045 0.030 1.00 8.0–10.5 18.0–20.0 … … … N 0.10†–0.16
F 309H S30909 23 chromium, 13.5
nickel
309HG
0.04–0.10 2.00 0.045 0.030 1.00 12.0–15.0 22.0–24.0 … … … …
F 310 S31000 25 chromium, 20 nickel
310G
0.25 2.00 0.045 0.030 1.00 19.0–22.0 24.0–26.0 … … … …
F 310H S31009 25 chromium, 20 nickel
310HG
0.04–0.10 2.00 0.045 0.030 1.00 19.0–22.0 24.0–26.0 … … … …
F
310MoLN
S31050 25 chromium, 22
nickel,
modified with
molybdenum and
nitrogen, low carbon
310MoLNG
0.030 2.00 0.030 0.015 0.40 21.0–23.0 24.0–26.0 2.00–3.00 … … N 0.10–0.16
F 316 S31600 18 chromium, 8 nickel,
modified with
molybdenum
316G
0.08 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 … … N 0.10
F 316H S31609 18 chromium, 8 nickel,
modified with
molybdenum
316HG
0.04–0.10 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 … … …
F 316L S31603 18 chromium, 8 nickel,
modified with
molybdenum, low
carbon
316LG
0.030 2.00 0.045 0.030 1.00 10.0–15.0 16.0–18.0 2.00–3.00 … … N 0.10
F 316N S31651 18 chromium, 8 nickel,
modified with
molybdenum and
nitrogen
316NG
0.08 2.00 0.045 0.030 1.00 11.0–14.0 16.0–18.0 2.00–3.00 … … N 0.10–0.16
A182/A182M − 12a
7
TABLE 2 Continued
Identification
Symbol
UNS
Designation
Grade Composition, %
Carbon Manganese
Phosphorus
Sulfur Silicon Nickel Chromium Molybdenum
Columbium
Titanium
Other
Elements
F 316LN S31653 18 chromium, 8 nickel,
modified with
molybdenum and
nitrogen
316LNG
0.030 2.00 0.045 0.030 1.00 11.0–14.0 16.0–18.0 2.00–3.00 … … N 0.10–0.16
F 316Ti S31635 18 chromium, 8 nickel,
modified with
molybdenum and
nitrogen
316Ti
0.08 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 … I N 0.10 max
F 317 S31700 19 chromium, 13
nickel, 3.5 molybdenum
317G
0.08 2.00 0.045 0.030 1.00 11.0–15.0 18.0–20.0 3.0–4.0 … … …
F 317L S31703 19 chromium, 13
nickel, 3.5 molybdenum
317LG
0.030 2.00 0.045 0.030 1.00 11.0–15.0 18.0–20.0 3.0–4.0 … … …
S31727 S31727 18 chromium, 15
nickel, 4.5
molybdenum,
3.5 copper with
nitrogen
0.030 1.00 0.030 0.030 1.00 14.5–16.5 17.5–19.0 3.8–4.5 … … Cu 2.8–4.0
N 0.15–0.21
S32053 S32053 23 chromium, 25
nickel, 5.5
molybdenum, with
nitrogen
0.030 1.00 0.030 0.010 1.00 24.0–28.0 22.0–24.0 5.0–6.0 … … N 0.17–0.22
F 321 S32100 18 chromium, 8 nickel
modified with titanium
321G
0.08 2.00 0.045 0.030 1.00 9.0–12.0 17.0–19.0 … … J …
F 321H S32109 18 chromium, 8 nickel,
modified with titanium
321HG
0.04–0.10 2.00 0.045 0.030 1.00 9.0–12.0 17.0–19.0 … … K …
F 347 S34700 18 chromium, 8 nickel
modified with
columbium
347G
0.08 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 … L … …
F 347H S34709 18 chromium, 8 nickel,
modified with
columbium
347HG
0.04–0.10 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 … M … …
F347LN S34751 18 chromium, 8 nickel
modified with
columbium and
nitrogen
347LN
0.005–0.020 2.00 0.045 0.030 1.00 9.0–13.0 17.0–19.0 … 0.20–0.50N … N 0.06–0.10
F 348 S34800 18 chromium, 8 nickel
modified with
columbium
348G
0.08 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 … L … Co 0.20
Ta 0.10
F 348H S34809 18 chromium, 8 nickel,
modified with
columbium
348HG
0.04–0.10 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 … M … Co 0.20
Ta 0.10
F XM-11 S21904 20 chromium, 6 nickel,
9 manganese
XM-11G
0.040 8.0–10.0 0.060 0.030 1.00 5.5–7.5 19.0–21.5 … … … N 0.15–0.40
F XM-19 S20910 22 chromium, 13
nickel, 5 manganese
XM-19G
0.06 4.0–6.0 0.040 0.030 1.00 11.5–13.5 20.5–23.5 1.50–3.00 0.10–
0.30
… N 0.20–0.40
V 0.10–0.30
F 20 N08020 35 nickel, 20
chromium, 3.5 copper,
2.5 molybdenum
.07 2.00 0.045 0.035 1.00 32.0–38.0 19.0–21.0 2.00–3.00 8xCmin
–1.00
… Cu 3.0–4.0
F 44 S31254 20 chromium, 18
nickel, 6 molybdenum,
low carbon
0.020 1.00 0.030 0.010 0.80 17.5–18.5 19.5–20.5 6.0–6.5 … … Cu 0.50–1.00
N 0.18–0.22
F 45 S30815 21 chromium, 11 nickel
modified with nitrogen
and cerium
0.05–0.10 0.80 0.040 0.030 1.40–2.00 10.0–12.0 20.0–22.0 … … … N 0.14–0.20
Ce 0.03–0.08
F 46 S30600 18 chromium, 15
nickel, 4 silicon
0.018 2.00 0.020 0.020 3.7–4.3 14.0–15.5 17.0–18.5 0.20 … … Cu 0.50
F 47 S31725 19 chromium, 15
nickel, 4 molybdenum
317LMG
0.030 2.00 0.045 0.030 0.75 13.0–17.5 18.0–20.0 4.0–5.0 … … N 0.10
A182/A182M − 12a
8
TABLE 2 Continued
Identification
Symbol
UNS
Designation
Grade Composition, %
Carbon Manganese
Phosphorus
Sulfur Silicon Nickel Chromium Molybdenum
Columbium
Titanium
Other
Elements
F 48 S31726 19 chromium, 15
nickel, 4 molybdenum
317LMNG
0.030 2.00 0.045 0.030 0.75 13.5–17.5 17.0–20.0 4.0–5.0 … … N 0.10–0.20
F 49 S34565 24 chromium, 17
nickel, 6 manganese, 5
molybdenum
0.030 5.0–7.0 0.030 0.010 1.00 16.0–18.0 23.0–25.0 4.0–5.0 0.10 … N 0.40–0.60
F 56 S33228 32 nickel, 27 chromium
with columbium
0.04–0.08 1.00 0.020 0.015 0.30 31.0–33.0 26.0–28.0 … 0.6–1.0 … Ce 0.05–0.10
Al 0.025
F 58 S31266 24 chromium, 20
nickel, 6 molybdenum,
2 tungsten with
nitrogen
0.030 2.0–4.0 0.035 0.020 1.00 21.0–24.0 23.0–25.0 5.2–6.2 … … N 0.35–0.60
Cu 1.00–2.50
W 1.50–2.50
F 62 N08367 21 chromium, 25
nickel, 6.5 molybdenum
0.030 2.00 0.040 0.030 1.00 23.5–25.5 20.0–22.0 6.0–7.0 … … N 0.18–0.25
Cu 0.75
F 63 S32615 18 chromium, 20
nickel, 5.5 silicon
0.07 2.00 0.045 0.030 4.8-6.0 19.0-22.0 16.5-19.5 0.30-1.50 … … Cu 1.50-2.50
F 64 S30601 17.5 chromium, 17.5
nickel, 5.3 silicon
0.015 0.50-0.80 0.030 0.013 5.0-5.6 17.0-18.0 17.0-18.0 0.20 … … Cu 0.35, N 0.05
F 904L N08904 21 chromium, 26
nickel, 4.5 molybdenum
904LG
0.020 2.0 0.040 0.030 1.00 23.0–28.0 19.0–23.0 4.0–5.0 … … Cu 1.00–2.00
N 0.10
Ferritic-Austenitic Stainless Steels
F 50 S31200 25 chromium, 6 nickel,
modified with nitrogen
0.030 2.00 0.045 0.030 1.00 5.5–6.5 24.0–26.0 1.20–2.00 … … N 0.14–0.20
F 51 S31803 22 chromium, 5.5
nickel, modified with
nitrogen
0.030 2.00 0.030 0.020 1.00 4.5–6.5 21.0–23.0 2.5–3.5 … … N 0.08–0.20
F 52 S32950 26 chromium, 3.5
nickel, 1.0 molybdenum
0.030 2.00 0.035 0.010 0.60 3.5–5.2 26.0–29.0 1.00–2.50 … … N 0.15–0.35
F 53 S32750 25 chromium, 7 nickel,
4 molybdenum,
modified with nitrogen
2507G
0.030 1.20 0.035 0.020 0.80 6.0–8.0 24.0–26.0 3.0–5.0 … … N 0.24–0.32
Cu 0.50
F 54 S39274 25 chromium, 7 nickel,
modified with nitrogen
and tungsten
0.030 1.00 0.030 0.020 0.80 6.0–8.0 24.0–26.0 2.5–3.5 … … N 0.24–0.32
Cu 0.20–0.80
W 1.50–2.50
F 55 S32760 25 chromium, 7 nickel,
3.5 molybdenum,
modified with nitrogen
and tungsten
0.030 1.00 0.030 0.010 1.00 6.0–8.0 24.0–26.0 3.0–4.0 … … N 0.20–0.30
Cu 0.50–1.00
W 0.50–1.00O
F 57 S39277 26 chromium, 7 nickel,
3.7 molybdenum
0.025 0.80 0.025 0.002 0.80 6.5–8.0 24.0–26.0 3.0–4.0 … … Cu 1.20–2.00
W 0.80–1.20
N 0.23–0.33
F 59 S32520 25 chromium, 6.5
nickel, 4 molybdenum
with nitrogen
0.030 1.50 0.035 0.020 0.80 5.5–8.0 24.0–26.0 3.0–5.0 … … N 0.20–0.35
Cu 0.50–3.00
F 60 S32205 22 chromium, 5.5
nickel, 3 molybdenum,
modified with nitrogen
2205G
0.030 2.00 0.030 0.020 1.00 4.5–6.5 22.0–23.0 3.0–3.5 … … N 0.14–0.20
F 61 S32550 26 chromium, 6 nickel,
3.5 molybdenum with
nitrogen and copper
255G
0.040 1.50 0.040 0.030 1.00 4.5–6.5 24.0–27.0 2.9–3.9 … … Cu 1.50–2.50
N 0.10–0.25
F 65 S32906 29 chromium, 6.5
nickel, 2 molybdenum
with nitrogen
0.030 0.80–1.50 0.030 0.030 0.80 5.8–7.5 28.0–30.0 1.5–2.6 … … Cu 0.80
N 0.30–0.40
F 66 S32202 22 chromium, 2.0
nickel, 0.25
molybdenum with
nitrogen
0.030 2.00 0.040 0.010 1.00 1.00–2.80 21.5–24.0 0.45 … … N 0.18–0.26
F 67 S32506 25 chromium, 6 nickel,
3 molybdenum, with
nitrogen
and tungsten
0.030 1.00 0.040 0.015 0.90 5.5–7.2 24.0–26.0 3.0–3.5 … … N 0.08–0.20
W 0.05–0.30
A All values are maximum unless otherwise stated. Where ellipses (…) appear in this table, there is no requirement and analysis for the element need not be determined
or reported.
B Grade F 2 was formerly assigned to the 1 % chromium, 0.5 % molybdenum grade which is now Grade F 12.
C The present grade F 5a (0.25 max carbon) previous to 1955 was assigned the identification symbol F 5. Identification symbol F 5 in 1955 was assigned to the 0.15 max
carbon grade to be consistent with ASTM specifications for other products such as pipe, tubing, bolting, welding fittings, and the like.
DApplies to both heat and product analyses.
E For Grade F22V, rare earth metals (REM) may be added in place of calcium, subject to agreement between the producer and the purchaser. In that case the total amount
of REM shall be determined and reported.
A182/A182M − 12a
9
may verify that the requirement has been met by testing at any
location on the forging provided such testing does not render
the forging useless.
9.6.2 When the reduced number of tension tests permitted
by 9.5.1.1 is applied, additional hardness tests shall be made on
forgings or samples, as defined in 9.2, scattered throughout the
load (see Note 2). At least eight samples shall be checked from
each batch load, and at least one check per hour shall be made
from a continuous run. When the furnace batch is less than
eight forgings, each forging shall be checked. If any check falls
outside the prescribed limits, the entire lot of forgings shall be
reheat treated and the requirements of 9.5.1 shall apply.
NOTE 2—The tension test required in 9.5.1 is used to determine material
capability and conformance in addition to verifying the adequacy of the
heat-treatment cycle. Additional hardness tests in accordance with 9.6.2
are required when 9.5.1.1 is applied to ensure the prescribed heat-treating
cycle and uniformity throughout the load.
9.6.3 When the alternative to the Ti/N ratio limit for F23 is
applied, (see Note P in Table 2), a minimum of two pieces per
batch or continuous run as defined in 9.6.2 shall be hardness
tested, in the hardened condition (see 3.2.1), to ensure that the
forgings are within the hardness limit given for F23 in Note P
of Table 2. The test samples shall be taken at the mid thickness
of the thickest section of the product. Testing shall be performed
in accordance with the Test Method E92 or as specified
in Specification A961/A961M.
9.7 Notch Toughness Requirements— Grades F 3V, F 3VCb,
and F 22V.
9.7.1 Impact test specimens shall be Charpy V-notch Type.
The usage of subsize specimens due to material limitations
must have prior purchaser approval.
9.7.2 The Charpy V-notch test specimens shall be obtained
as required for tension tests in 9.2, 9.3 and 9.5. One set of three
Charpy V-notch specimens shall be taken from each tensile
specimen location.
9.7.3 The longitudinal axis and mid-length of impact specimen
shall be located similarly to the longitudinal axis of the
tension test specimens. The axis of the notch shall be normal to
the nearest heat-treated surface of the forging.
9.7.4 The Charpy V-notch tests shall meet a minimum
energy absorption value of 40 ft-lbf [54 J] average of three
specimens. One specimen only in one set may be below 40
ft-lbf [54 J], and it shall meet a minimum value of 35 ft-lbf [48
J].
9.7.5 The impact test temperature shall be 0 °F [−18 °C]. - Grain Size for Austenitic Grades
10.1 All H grades and grade F 63 shall be tested for average
grain size by Test Methods E112.
10.1.1 Grades F 304H, F 309H, F 310H, and F 316H shall
have a grain size of ASTM No. 6 or coarser.
10.1.2 Grades F 321H, F 347H, and F 348H shall have a
grain size of ASTM No. 7 or coarser.
10.1.3 Grade F 63 shall have a grain size of ASTM No. 3 or
finer. - Corrosion Testing for Austenitic Grades
11.1 Corrosion testing is not required by this specification.
11.2 Austenitic grades shall be capable of meeting the
intergranular corrosion test requirements described in Supplementary
Requirement S4. - Retreatment
12.1 If the results of the mechanical tests do not conform to
the requirements specified, the manufacturer may reheat treat
the forgings and repeat the tests specified in Section 9. - Nondestructive Test Requirements
13.1 Hollow forgings of Grades F 91, F 92, F 122, and F
911, NPS 4 [DIN 100] and larger, whose internal surfaces are
not accessible to magnetic particle or liquid penetrant
examination, shall be examined by an ultrasonic test in
accordance with Practice A388/A388M.
13.2 Hollow forgings of Grades F 91, F 92, F 122, and F
911, NPS 4 [DIN 100] and larger, whose internal surfaces are
accessible to magnetic particle or liquid penetrant examination,
shall be examined on their internal surfaces by either a
magnetic particle test in accordance with Practice A275/
A275M, or by a liquid penetrant examination in accordance
with Test Method E165, as applicable.
13.3 Time of Examination:
13.3.1 Examination by one of the methods in 13.1 or 13.2,
for specification acceptance, shall be performed after all
mechanical processing and heat treatment. This requirement
does not preclude additional testing at earlier stages in the
processing.
13.4 Evaluation of Imperfections Found by Ultrasonic Examination:
13.4.1 Forgings producing a signal equal to or greater than
the lowest signal produced by the reference discontinuities
FThe ratio of Titanium to Nitrogen shall be $ 3.5. Alternatively, in lieu of this ratio limit, Grade F23 shall have a minimum hardness of 275 HV (26 HRC, 258 HBW) in the
hardened condition (see 3.2.1). Hardness testing shall be performed in accordance with 9.6.3, and the hardness testing results shall be reported on the material test report
(see 18.2.5).
G Naming system developed and applied by ASTM.
H Grade F XM-27Cb shall have a nickel plus copper content of 0.50 max %. Product analysis tolerance over the maximum specified limit for carbon and nitrogen shall be
0.002 %.
I Grade F 316Ti shall have a titanium content not less than five times the carbon plus nitrogen content and not more than 0.70 %.
J Grade F 321 shall have a titanium content of not less than five times the carbon content and not more than 0.70 %.
K Grade F 321H shall have a titanium content of not less than four times the carbon content and not more than 0.70 %.
L Grades F 347 and F 348 shall have a columbium content of not less than ten times the carbon content and not more than 1.10 %.
M Grades F 347H and F 348H shall have a columbium content of not less than eight times the carbon content and not more than 1.10 %.
NGrade F347LN shall have a columbium content of not less than 15 times the carbon content.
O% Cr + 3.3 × % Mo + 16 × % N = 40 min.
† Editorially corrected.
A182/A182M − 12a
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TABLE 3 Tensile and Hardness RequirementsA
Grade Symbol Tensile Strength,
min, ksi [MPa]
Yield Strength, min,
ksi [MPa]B
Elongation in 2 in.
[50 mm] or 4D,
min, %
Reduction of
Area, min, %
Brinell Hardness
Number, HBW
Low Alloy Steels
F 1 70 [485] 40 [275] 20 30 143–192
F 2 70 [485] 40 [275] 20 30 143–192
F 5 70 [485] 40 [275] 20 35 143–217
F 5a 90 [620] 65 [450] 22 50 187–248
F 9 85 [585] 55 [380] 20 40 179–217
F 10 80 [550] 30 [205] 30 50 . . .
F 91 90 [620] 60 [415] 20 40 190–248
F 92 90 [620] 64 [440] 20 45 269 max
F 122 90 [620] 58 [400] 20 40 250 max
F 911 90 [620] 64 [440] 18 40 187–248
F 11 Class 1 60 [415] 30 [205] 20 45 121–174
F 11 Class 2 70 [485] 40 [275] 20 30 143–207
F 11 Class 3 75 [515] 45 [310] 20 30 156–207
F 12 Class 1 60 [415] 32 [220] 20 45 121–174
F 12 Class 2 70 [485] 40 [275] 20 30 143–207
F 21 75 [515] 45 [310] 20 30 156–207
F 3V, and F 3VCb 85–110 [585–760] 60 [415] 18 45 174–237
F 22 Class 1 60 [415] 30 [205] 20 35 170 max
F 22 Class 3 75 [515] 45 [310] 20 30 156–207
F 22V 85–110 [585–780] 60 [415] 18 45 174–237
F 23 74 [510] 58 [400] 20 40 220 max
F 24 85 [585] 60 [415] 20 40 248 max
FR 63 [435] 46 [315] 25 38 197 max
F 36, Class 1 90 [620] 64 [440] 15 . . . 252 max
F 36, Class 2 95.5 [660] 66.5 [460] 15 . . . 252 max
Martensitic Stainless Steels
F 6a Class 1 70 [485] 40 [275] 18 35 143–207
F 6a Class 2 85 [585] 55 [380] 18 35 167–229
F 6a Class 3 110 [760] 85 [585] 15 35 235–302
F 6a Class 4 130 [895] 110 [760] 12 35 263–321
F 6b 110–135 [760–930] 90 [620] 16 45 235–285
F 6NM 115 [790] 90 [620] 15 45 295 max
Ferritic Stainless Steels
F XM-27Cb 60 [415] 35 [240] 20 45 190 max
F 429 60 [415] 35 [240] 20 45 190 max
F 430 60 [415] 35 [240] 20 45 190 max
Austenitic Stainless Steels
F 304 75 [515]C 30 [205] 30 50 . . .
F 304H 75 [515]C 30 [205] 30 50 . . .
F 304L 70 [485]D 25 [170] 30 50 . . .
F 304N 80 [550] 35 [240] 30E 50F . . .
F 304LN 75 [515]C 30 [205] 30 50 . . .
F 309H 75 [515]C 30 [205] 30 50 . . .
F 310 75 [515]C 30 [205] 30 50 . . .
F 310MoLN 78 [540] 37 [255] 25 40 . . .
F 310H 75 [515]C 30 [205] 30 50 . . .
F 316 75 [515]C 30 [205] 30 50 . . .
F 316H 75 [515]C 30 [205] 30 50 . . .
F 316L 70 [485]D 25 [170] 30 50 . . .
F 316N 80 [550] 35 [240] 30E 50F . . .
F 316LN 75 [515]C 30 [205] 30 50 . . .
F 316Ti 75 [515] 30 [205] 30 40 . . .
F 317 75 [515]C 30 [205] 30 50 . . .
F 317L 70 [485]D 25 [170] 30 50 . . .
S31727 80 [550] 36 [245] 35 50 217
S32053 93 [640] 43 [295] 40 50 217
F 347 75 [515]C 30 [205] 30 50 . . .
F 347H 75 [515]C 30 [205] 30 50 . . .
F 347LN 75 [515] 30 [205] 30 50 . . .
F 348 75 [515]C 30 [205] 30 50 . . .
F 348H 75 [515]C 30 [205] 30 50 . . .
F 321 75 [515]C 30 [205] 30 50 . . .
F 321H 75 [515]C 30 [205] 30 50 . . .
F XM-11 90 [620] 50 [345] 45 60 . . .
F XM-19 100 [690] 55 [380] 35 55 . . .
F 20 80 [550] 35 [240] 30 50 . . .
F 44 94 [650] 44 [300] 35 50 . . .
F 45 87 [600] 45 [310] 40 50 . . .
F 46 78 [540] 35 [240] 40 50 . . .
F 47 75 [525] 30 [205] 40 50 . . .
F 48 80 [550] 35 [240] 40 50 . . .
A182/A182M − 12a
11
shall be identified and separated from the acceptable forgings.
The area producing the signal may be reexamined.
13.4.2 Such forgings shall be rejected if the test signals were
produced by imperfections that cannot be identified or were
produced by cracks or crack-like imperfections. Such forgings
may be repaired. To be accepted, a repaired forging shall pass
the same nondestructive test by which it was rejected, and it
shall meet the minimum wall thickness requirements of this
specification and the purchase order.
13.4.3 If the test signals were produced by visual imperfections
such as scratches, surface roughness, dings, tooling
marks, cutting chips, steel die stamps, or stop marks, the
forging is permitted to be accepted based upon visual examination
provided that the depth of the imperfection is less than
0.004 in. [0.1 mm] or 12.5 % of the specified wall thickness,
whichever is the greater.
13.5 Treatment of Imperfections Found by Magnetic Particle
or Liquid Penetrant Examination:
13.5.1 Defects shall be completely removed prior to weld
repair by chipping or grinding to sound metal. Removal of
these defects shall be verified by magnetic particle inspection
in accordance with Test Method A275/A275M or by liquid
penetrant inspection in accordance with Test Method E165.
13.5.2 Rejected forgings may be reconditioned and retested,
provided that the wall thickness is not decreased to less than
that required by this specification and the purchase order. The
outside diameter at the point of grinding may be reduced by the
amount so removed. To be accepted, retested forgings shall
meet the test requirement.
13.5.3 If the imperfection is explored to the extent that it can
be identified as non-rejectable, the forging may be accepted
without further test provided that the imperfection does not
encroach on the minimum required wall thickness. - Workmanship, Finish, and Appearance
14.1 Forgings shall conform to the requirements of Specification
A961/A961M.
14.2 The forgings shall be free of scale, machining burrs
which might hinder fit-up, and other injurious imperfections as
defined herein. The forgings shall have a workmanlike finish,
and machined surfaces (other than surfaces having special
requirements) shall have a surface finish not to exceed 250 AA
(arithmetic average) roughness height. - Repair by Welding
15.1 Weld repairs shall be permitted (see Supplementary
Requirement S58 of Specification A961/A961M) at the discretion
of the manufacturer with the following limitations and
requirements:
15.1.1 The welding procedure and welders shall be qualified
in accordance with Section IX of the ASME Boiler and
Pressure Vessel Code.
15.1.2 The weld metal shall be deposited using the electrodes
specified in Table 4 except as otherwise provided in
Supplementary Requirement S5. The electrodes shall be purchased
in accordance with AWS Specifications A5.4/A5.4M,
A5.5/A5.5M, A5.9/A5.9M, A5.11/A5.11M, A5.14/A5.14M,
TABLE 3 Continued
Grade Symbol Tensile Strength,
min, ksi [MPa]
Yield Strength, min,
ksi [MPa]B
Elongation in 2 in.
[50 mm] or 4D,
min, %
Reduction of
Area, min, %
Brinell Hardness
Number, HBW
F 49 115 [795] 60 [415] 35 40 . . .
F 56 73 [500] 27 [185] 30 35 . . .
F 58 109 [750] 61 [420] 35 50 . . .
F 62 95 [655] 45 [310] 30 50 . . .
F 63 80 [550] 32 [220] 25 . . . 192 max
F 64 90 [620] 40 [275] 35 50 217 max
F 904L 71 [490] 31 [215] 35 . . . . . .
Ferritic-Austenitic Stainless Steels
F 50 100–130
[690–900]
65 [450] 25 50 . . .
F 51 90 [620] 65 [450] 25 45 . . .
F 52 100 [690] 70 [485] 15 . . . . . .
F 53 116 [800]G 80 [550]G 15 . . . 310 max
F 54 116 [800] 80 [550] 15 30 310 max
F 55 109–130
[750–895]
80 [550] 25 45 . . .
F 57 118 [820] 85 [585] 25 50 . . .
F 59 112 [770] 80 [550] 25 40 . . .
F 60 95 [655] 65 [450] 25 45 . . .
F 61 109 [750] 80 [550] 25 50 . . .
F 65 109 [750] 80 [550] 25 . . . . . .
F 66 94 [650] 65 [450] 30 . . . 290 max
F 67 90 [620] 65 [450] 18 . . . 302
AWhere ellipses appear in this table, there is no requirement and the test for the value need neither be performed nor a value reported.
B Determined by the 0.2 % offset method. For ferritic steels only, the 0.5 % extension-under-load method may also be used.
C For sections over 5 in. [130 mm] in thickness, the minimum tensile strength shall be 70 ksi [485 MPa].
D For sections over 5 in. [130 mm] in thickness, the minimum tensile strength shall be 65 ksi [450 MPa].
E Longitudinal. The transverse elongation shall be 25 % in 2 in. or 50 mm, min.
F Longitudinal. The transverse reduction of area shall be 45 % min.
G For sections over 2 in. [50 mm] in thickness, the minimum tensile strength shall be 106 ksi [730 MPa]; the minimum yield strength shall be 75 ksi [515 MPa].
A182/A182M − 12a
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TABLE 4 Repair Welding Requirements
Grade Symbol ElectrodesA Recommended Preheat and
Interpass Temperature
Range, °F [°C]
Post Weld Heat-Treatment
Temperature, Minimum or
Range, °F [°C]
Low Alloy Steels
F 1 E 7018-A 1 200–400 [95–205] 1150 [620]
F 2 E 8018-B 1 300–600 [150–315] 1150 [620]
F 5 E80XX-B6, where XX can be
15, 16, or 18
400–700 [205–370] 1250 [675]
F 5a E80XX-B6, where XX can be
15, 16, or 18
400–700 [205–370] 1250 [675]
F 9 E80XX-B8, where XX can be
15, 16, or 18
400–700 [205–370] 1250 [675]
F 10B . . . . . . . . .
F 91 . . .C 400–700 [205–370] 1350–1470 [730–800]
F 92 . . .D 400–700 [205–370] 1350–1470 [730–800]
F 122 . . .D 400–700 [205–370] 1350–1470 [730–800]
F 911 . . .D 400–700 [205–370] 1365–1435 [740–780]
F 11, Class 1, 2,
and 3
E 8018-B 2 300–600 [150–315] 1150 [620]
F 12, Class 1 and 2 E 8018-B 2 300–600 [150–315] 1150 [620]
F 21 E 9018-B 3 300–600 [150–315] 1250 [675]
F 3V, and F 3VCb 3 % Cr, 1 % Mo, 1⁄4 % V-Ti 300–600 [150–315] 1250 [675]
F 22 Class 1 E 9018-B 3 300–600 [150–315] 1250 [675]
F 22 Class 3 E 9018-B 3 300–600 [150–315] 1250 [675]
F 22V 2.25 % Cr, 1 % Mo, 0.25 %
V-Cb
300–600 [150–315] 1250 [675]
F 23 2.25 % Cr, 1.6 % W, 0.25 %
V-Mo-Cb-B
300-600 [150–315] 1350–1470 [730–800]
F 24 2.25 % Cr, 1 % Mo, 0.25 % V 200–400 [95–205]E 1350–1470 [730–800]E
F 36, Class 1 1.15 Ni, 0.65 Cu, Mo, Cb 400–700 [205–370] 1100–1200 [595–650]
F 36, Class 2 1.15 Ni, 0.65 Cu, Mo, Cb 400–700 [205–370] 1000–1150 [540–620]
Martensitic Stainless Steels
F 6a, Class 1 E 410-15 or 16 400–700 [205–370] 1250 [675]
F 6a, Class 2 E 410-15 or 16 400–700 [205–370] 1250 [675]
F 6b 13% Cr, 11⁄2 % Ni, 1⁄2 % Mo 400–700 [205–370] 1150 [620]
F 6NM 13 % Cr, 4 % Ni 300–700 [150–370] 1050 [565]
Ferritic Stainless Steels
F XM-27Cb 26 % Cr, 1 % Mo NRF NR
F 429 E 430-16 400–700 [205–370] 1400 [760]
F 430 E 430-16 NR 1400 [760]
FR E 8018-C2 NR NR
Austenitic Stainless Steels
F 304 E 308-15 or 16 NR 1900 [1040] + WQG
F 304L E 308L-15 or 16 NR 1900 [1040] + WQ
F 304H E 308-15 or 16H or E308H-XX NR 1900 [1040] + WQ
F 304N E 308-15 or 16 NR 1900 [1040] + WQ
F 304LN E 308L-15 or 16 NR 1900 [1040] + WQ
F 309H E 309-15 or 16H or E309H-XX NR 1900 [1040] + WQ
F 310 E 310-15 or 16 NR 1900 [1040] + WQ
F 310H E 310-15 or 16H NR 1900 [1040] + WQ
F 310MoLN E 310Mo-15 or 16 NR 1920–2010 [1050–1100] + WQ
F 316 E 316-15 or 16 NR 1900 [1040] + WQ
F 316L E 316L-15 or 16 NR 1900 [1040] + WQ
F 316H E 316-15 or 16H or E316H-XX NR 1900 [1040] + WQ
F 316N E 316-15 or 16 NR 1900 [1040] + WQ
F 316LN E 316L-15 or 16 NR 1900 [1040] + WQ
F 316Ti E 316-15 or 16 NR 1900 [1040] + WQ
F 317 E 317-15 or 16 NR 1900 [1040] + WQ
F 317L E 317L-15 or 16 NR 1900 [1040] + WQ
S31727 . . . NR . . .
S32053 . . . NR . . .
F 321B E 347-15 or 16 NR 1900 [1040] + WQ
F 321HB E 347-15 or 16H NR 1925 [1050] + WQ
F 347 E 347-15 or 16 NR 1900 [1040] + WQ
F 347H E 347-15 or 16H NR 1925 [1050] + WQ
F 347LNI E 347-15 or 16 NR . . .
E 348 E 347-15 or 16 NR 1900 [1040] + WQ
F 348H E 347-15 or 16H NR 1925 [1050] + WQ
F XM-11 XM-10W NR NR
F XM-19 XM-19W NR NR
F 20 E/ER-320, 320LR NR 1700–1850 [925–1010] + WQ
F 44 E NiCrMo-3 NR 2100 [1150] + WQ
F 45B . . . . . . . . .
F 46 . . . . . . . . .
F 47 . . .J . . . 2100 [1150] + WQ
F 48 . . .J . . . 2100 [1150] + WQ
A182/A182M − 12a
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A5.23/A5.23M, A5.28/A5.28M, or A5.29/A5.29M. The submerged
arc process with neutral flux, the gas metal-arc process,
the gas tungsten-arc process, and gas shielded processes using
flux-core consumables, may be used.
15.1.3 Defects shall be completely removed prior to welding
by chipping or grinding to sound metal as verified by
magnetic-particle inspection in accordance with Test Method
A275/A275M for the low alloy steels and ferritic, martensitic,
or ferritic-austenitic stainless steels, or by liquid-penetrant
inspection in accordance with Test Method E165 for all grades.
15.1.4 After repair welding, the welded area shall be ground
smooth to the original contour and shall be completely free of
defects as verified by magnetic-particle or liquid-penetrant
inspection, as applicable.
15.1.5 The preheat, interpass temperature, and post-weld
heat treatment requirements given in Table 4 shall be met.
Austenitic stainless steel forgings may be repair-welded without
the post-weld heat treatment of Table 4, provided purchaser
approval is obtained prior to repair.
15.1.6 Repair by welding shall not exceed 10 % of the
surface area of the forging nor 331⁄3 % of the wall thickness of
the finished forging or 3⁄8 in. [9.5 mm], whichever is less,
without prior approval of the purchaser.
15.1.7 When approval of the purchaser is obtained, the
limitations set forth in 15.1.6 may be exceeded, but all other
requirements of Section 15 shall apply.
15.1.8 No weld repairs are permitted for F 6a Classes 3 and
4.
15.1.9 Post-weld heat treatment times for F 36 are: for Class
1, up to 2 in. [50 mm] in thickness, 1 h per in. [25 mm], 15
minutes minimum, and over 2 in. [50 mm], 15 minutes for each
additional in. of thickness or fraction thereof; for Class 2, 1 h
per in. [25 mm], 1⁄2 h minimum. - Inspection
16.1 Inspection provisions of Specification A961/A961M
apply. - Rejection and Rehearing
17.1 The purchaser shall comply with the provisions of
Specification A961/A961M. - Certification
18.1 In addition to the certification requirements of Specification
A961/A961M, test reports shall be furnished to the
purchaser or his representative.
18.2 Test reports shall include certification that all requirements
of this specification have been met. The specification
designation included on test reports shall include year of issue
and revision letter, if any. The manufacturer shall provide the
following where applicable:
18.2.1 Type heat treatment, Section 7,
18.2.2 Product analysis results, Section 8 of Specification
A961/A961M,
TABLE 4 Continued
Grade Symbol ElectrodesA Recommended Preheat and
Interpass Temperature
Range, °F [°C]
Post Weld Heat-Treatment
Temperature, Minimum or
Range, °F [°C]
F 49 . . .J . . . 2100 [1150] + WQ
F 58 E NiCrMo-10 . . . 2100 [1150] + WQ
F 62 E NiCrMo-3 NR 2025 [1105] + WQ
F 904L E NiCrMo-3 NR 1920–2100 [1050–1150] + WQ
Ferritic-Austenitic Stainless Steels
F 50 25 % Cr, 6 % Ni, 1.7 % Mo NR NR
F 51 22 % Cr, 5.5 % Ni, 3 % Mo NR NR
F 52 26 % Cr, 8 % Ni, 2 % Mo NR NR
F 53 25 % Cr, 7 % Ni, 4 % Mo NR NR
F 54 25 % Cr, 7 % Ni, 3 % Mo,
W
NR NR
F 55 25 % Cr, 7 % Ni, 3.5 % Mo NR NR
F 57 25 % Cr, 7 % Ni, 3 % Mo, 1.5 %
Cu, 1 % W
NR NR
F 59 E Ni CrMo-10 NR NR
F 60 22 % Cr, 5.5 % Ni, 3 % Mo NR NR
F 61 26 % Cr, 9 % Ni, 3.5 % Mo NR NR
F 65 29 % Cr, 6.5 % Ni, 2 % Mo NR NR
F 66 22 % Cr, 2 % Ni, 0.25 % Mo NR NR
F 67 . . . NR NR
A Except for Grades F 91, F 92, F 911, F 122, F 47, F 48, and F 49, electrodes shall comply with AWS Specifications A5.4/A5.4M, A5.5/A5.5M, A5.9/A5.9M, A5.11/A5.11M,
A5.14/A5.14M, A5.23/A5.23M, or A5.28/A5.28M.
B Purchaser approval required.
C All repairs in F 91 shall be made with one of the following welding processes and consumables: SMAW, A5.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + flux; GTAW,
A5.28/A5.28M ER90S-B9; and FCAW, A5.29/A5.29M E91T1-B9. In addition, the sum of the Ni+Mn content of all welding consumables shall not exceed 1.0 %.
D All repairs in F 92, F 911, and F 122, shall be made using welding consumables meeting the chemical requirements for the grade in Table 2.
E Preheat and PWHT are not required for this grade for forgings whose section thickness does not exceed 0.500 in. [12.7 mm].
F NR = not required.
G WQ = water quench.
H Filler metal shall additionally have 0.04 % minimum carbon.
IMatching filler metal is available.
J Match filler metal is available. Fabricators have also used AWS A5.14/A5.14M, Classification ERNiCrMo-3 and AWS A5.11/A5.11M, Class E, ENiCrMo-3 filler metals.
A182/A182M − 12a
14
18.2.3 Tensile property results, Section 9 (Table 3), report
the yield strength and ultimate strength, in ksi [MPa], elongation
and reduction in area, in percent,
18.2.4 Chemical analysis results, Section 8 (Table 2),
18.2.5 Hardness results, Section 9 (Table 3, and for F23,
Tables 2 and 3),
18.2.6 Grain size results, Section 10, and
18.2.7 Any supplementary testing required by the purchase
order. - Product Marking
19.1 In addition to the marking requirements of Specification
A961/A961M, the manufacturer’s name (see Note 3) or
symbol shall be permanently marked on each forging.
NOTE 3—For purposes of identification marking, the manufacturer is
considered the organization that certifies the piping component was
manufactured, sampled, and tested in accordance with this specification,
and the results have been determined to meet the requirements of this
specification.
19.1.1 Quenched and tempered low alloy or martensitic
stainless forgings shall be stamped with the letters QT following
the specification designation.
19.1.2 Forgings repaired by welding shall be marked with
the letter “W” following the Specification designation. When
repair-welded austenitic stainless steel forgings have not been
postweld heat treated in accordance with Table 4, the letters
“WNS” shall be marked following the specification designation.
19.1.3 When test reports are required, the markings shall
consist of the manufacturer’s symbol or name, the grade
symbol, and such other markings as necessary to identify the
part with the test report (19.1.1 and 19.1.2 shall apply).
19.1.4 Parts meeting all requirements for more than one
class or grade may be marked with more than one class or
grade designation such as F 304/F 304H, F 304/F 304L, and the
like.
19.2 Bar Coding—In addition to the requirements in 19.1,
bar coding is acceptable as a supplemental identification
method. The purchaser may specify in the order a specific bar
coding system to be used. The bar coding system, if applied at
the discretion of the supplier, should be consistent with one of
the published industry standards for bar coding. If used on
small parts, the bar code may be applied to the box or a
substantially applied tag. - Keywords
20.1 austenitic stainless steel; chromium alloy steel;
chromium-molybdenum steel; ferritic/austenitic stainless steel;
ferritic stainless steel; martensitic stainless steel; nickel alloy
steel; notch toughness requirements; pipe fittings; piping applications;
pressure containing parts; stainless steel fittings;
stainless steel forgings; steel; steel flanges; steel forgings,
alloy; steel valves; temperature service applications, elevated;
temperature service applications, high; wrought material
SUPPLEMENTARY REQUIREMENTS
In addition to any of the supplementary requirements of Specification A961/A961M, the following
supplementary requirements shall apply only when specified by the purchaser in the order.
S1. Macroetch Test
S1.1 A sample forging shall be sectioned and etched to
show flow lines and internal imperfections. The test shall be
conducted according to Test Method E340. Details of the test
shall be agreed upon between the manufacturer and the
purchaser.
S2. Heat Treatment Details
S2.1 The manufacturer shall furnish a detailed test report
containing the information required in 18.2 and shall include
all pertinent details of the heat-treating cycle given the forgings.
S3. Material for Optimum Resistance to Stress-Corrosion
Cracking
S3.1 Austenitic stainless steel shall be furnished in the
solution-annealed condition as a final operation with no subsequent
cold working permitted, except, unless specifically
prohibited by the purchaser, straightening of bars from which
parts are machined is permitted to meet the requirements of
Specification A484/A484M.
S4. Corrosion Tests
S4.1 All austenitic stainless steels shall pass intergranular
corrosion tests performed in accordance with Practice E of
Practices A262.
S4.2 Intergranular corrosion tests shall be performed on
specimens of ferritic stainless steels as described in Practices
A763.
S4.3 For both the austenitic and ferritic stainless steels,
details concerning the number of specimens and their source
and location are to be a matter of agreement between the
manufacturer and the purchaser.
S5. Special Filler Metal
S5.1 In repair-welded F 316, F 316L, F 316H, and F 316N
forgings, the deposited weld metal shall conform to E 308
composition wire. Forgings repair welded with E 308 weld
metal shall be marked F __ W 308.
S6. Hardness Test
S6.1 Each forging shall be hardness tested and shall meet
the requirements of Table 3.
A182/A182M − 12a
15
S8. Heat Treatment of Austenitic Forgings
S8.1 The purchaser shall specify the heat-treatment method
(in 7.1 or in 7.3.1) that shall be employed.
S8.2 The manufacturer shall provide a test report containing
the information required in 18.2 and shall include a statement
of the heat-treatment method employed.
S9. Grain Size for Austenitic Grades
S9.1 Forgings made from austenitic grades other than H
grades shall be tested for average grain size by Test Method
E112. Details of the test shall be agreed upon between the
manufacturer and the purchaser.
S10. Stabilization Treatment
S10.1 Subsequent to the solution anneal for Grades F 321, F
321H, F 347, F 347H, F 348, and F 348H, these grades shall be
given a stabilization heat treatment at 1500 to 1600 °F [815 to
870 °C] for a minimum of 2 h/in. [4.7 min/mm] of thickness
and then cooling in the furnace or in air. In addition to the
marking required in Section 19, the grade designation symbol
shall be followed by the symbol “S10.”
S11. Grain Size Requirements for Non-H-Grade Austenitic
Steels Used Above 1000 °F [540 °C]
S11.1 Non-H grades of austenitic stainless steels shall have
a grain size of No. 7 or coarser as determined in accordance
with Test Methods E112. The grain size so determined shall be
on a certified test report.
SUMMARY OF CHANGES
Committee A01 has identified the location of selected changes to this specification since the last issue,
A182/A182M–11a, that may impact the use of this specification. (Approved May 15, 2012)
(1) Revised 6.4.3 to correct the inadvertent exclusion of ferritic
stainless steel parts.
(2) Revised location of Footnotes H, I, and J, in Table 2, to
remove potential conflict with Footnote A.
Committee A01 has identified the location of selected changes to this specification since the last issue,
A182/A182M–11, that may impact the use of this specification. (Approved October 1, 2011)
(1) Deleted references to Test Methods and Definitions A370.
Committee A01 has identified the location of selected changes to this specification since the last issue,
A182/A182M–10a, that may impact the use of this specification. (Approved June 1, 2011)
(1) Added reference to Practice A388/A388M in 13.1 and
Referenced Documents.
(2) Revised 7.2.1 and added 7.2.3 to permit Q&T of F 91
forgings having a section thickness greater than 3 in [75 mm]
at the time of heat treatment and at the manufacturer’s option.
(3) Revised the minimum specified tensile strength and added
a minimum hardness for Grade F 91 in Table 3.
(4) Added new Section 13 on Nondestructive Test Requirements.
(5) Editorially revised Note C for F 24 in Table 4.
(6) Deleted Supplementary Requirement S7 from the specification.
A182/A182M − 12a
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NORSOK Approved Standard M-630, M-650 Rev.3
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