Manufacture, Stockholder And Distributors of Carbon Steel Cold Drawn Bars

SPECIFICATION FOR COLD-DRAWN, STRESS RELIEVED
CARBON STEEL BARS SUBJECT TO
MECHANICAL PROPERTY REQUIREMENTS
SA-311/SA-311M
(Identical to ASTM Specification A 311/A 311M-95 (R2000) except for deletion of 5.1.11, revision of Table 1 footnote A, and
editorial corrections to Table 2.)

Scope
1.1 This specification covers two classes, nine grades,
and four conditions of stress-relieved cold-drawn carbon
steel bars produced to mechanical property requirements.
One class, B, is cold drawn with higher than normal
(heavy) drafts to provide higher strength levels, and
four grades provide improved machinability.
1.2 Supplementary Requirements, S1 through S6, of
an optional nature are provided.
1.3 The values stated in inch-pound units or SI units
are to be regarded as the standard. Within the text,
the SI units are shown in brackets. The values stated
in each system are not exact equivalents, therefore,
each system must be used independently of the other.
Combining values from the two systems may result in
nonconformance with the specification.
Referenced Documents
2.1 ASTM Standards:
A 29/A 29M Specification for Steel Bars, Carbon and
Alloy, Hot-Wrought and Cold-Finished, General Requirements
for
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
E 527 Practice for Numbering Metals and Alloys (UNS)
Terminology
3.1 Definitions:
3.1.1 stress relieving — heating to a suitable
temperature, holding long enough to reduce residual
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stresses, and then cooling slowly enough to minimize
the development of new residual stresses.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 heavy draft — Using higher than normal
drafts (approximately 10% through 35% reduction),
followed by stress relieving, produces higher tensile
and yield strengths provided an appropriate composition
is used; for example, medium carbon with normal or
higher manganese content.
Classification
4.1 The bars are furnished in the following classes
and grades, and in the conditions shown in 6.4.
4.1.1 Class A — Normal-draft cold-drawn and
stress-relieved rounds, squares, hexagons, and flats in
the following grades:
Grades UNS Designations
1018 G10180
1035 G10350
1045 G10450
1050 G10500
1541 G15410
1117 G11170
1137 G11370
1141 G11410
1144 G11440
4.1.2 Class B — Heavy-draft cold-drawn and
stress-relieved rounds and hexagons in the following
grades:
A03
SA-311/SA-311M 2001 SECTION II
Grade UNS Designations
1045 G10450
1050 G10500
1541 G15410
1141 G11410
1144 G11440
Ordering Information
5.1 Orders for material under this specification should
include the following information as required to adequately
describe the desired material:
5.1.1 Quantity (weight [mass] or number of pieces),
5.1.2 Name of material (carbon steel bars, cold
drawn, stress relieved),
5.1.3 Condition (8.3),
5.1.4 Cross-sectional shape,
5.1.5 Size,
5.1.6 Length,
5.1.7 Class and grade,
5.1.8 Report of heat analysis, tensile properties
Section 11,
5.1.9 ASTM designation A 311 or A 311M,
5.1.10 Application,
5.1.11 DELETED,
5.1.12 Supplementary requirements, if any, and
5.1.13 Additional requirements, if any.
NOTE 1— A typical ordering description is as follows: 10 000 lb
carbon steel bars, cold drawn, stress relieved turned and polished,
round 2.0 in. (50.8 mm) Diameter, 10 to 12 ft (3048 to 3658 mm)
long, Class B, Grade 1050, (UNS G 10500), fine grain, test reports
required, ASTM A 311/A 311M dated , hydraulic cylinder
piston rods. [5000 kg carbon steel bars, cold drawn, stress relieved
turned and polished round 50 mm diameter, 3050 to 3650 mm long,
Class B, Grade 1050 (UNS G 10500), fine grain, test reports required,
ASTM A 311M dated , hydraulic cylinder piston rods.]
Materials and Manufacture
6.1 Melting Practice — The steel shall be made by
one or more of the following primary processes: openhearth,
basic-oxygen, or electric-furnace. The primary
melting may incorporate separate degassing or refining
and may be followed by secondary melting using
electroslag remelting or vacuum arc remelting. Where
secondary melting is employed, the heat shall be defined
as all of the ingots remelted from a single primary heat.
490
6.2 Cold Working:
6.2.1 Class A bars shall be cold drawn using
normal drafting practices.
6.2.2 Class B bars shall be cold drawn using heavy
(higher than normal) drafting practices.
6.3 Thermal Treatment — After cold drawing, the
bars shall be stress relieved at a temperature of not less
than 550°F [288°C] to meet the mechanical requirements
specified in Table 2.
6.4 Condition — The bars shall be furnished in
the following cold finish conditions, as specified:
6.4.1 Cold drawn, stress relieved;
6.4.2 Cold drawn, stress relieved, turned, and
polished;
6.4.3 Cold drawn, stress relieved, turned, ground,
and polished; and
6.4.4 Cold drawn, stress relieved, ground, and
polished.
NOTE 2— When turned bars are specified, turning may be performed
prior to cold-drawing.
Chemical Composition
7.1 Composition — The cast or heat analysis shall
conform to the chemical composition requirements specified
in Table 1 for the grade ordered.
Mechanical Properties
8.1 Requirements — The bars shall conform to the
requirements listed in Table 2.
8.2 Number of Tests — At least one tension test
shall be made on each lot. A lot shall consist of bars
of the same size from the same heat which have been
stress relieved in the same stationary furnace charge.
For continuous type of treatment, a lot shall consist
of 25 tons [25 Mg] or less of the same size of each
heat, treated in the same cycle.
8.3 Specimens — Tension test specimens shall be
taken longitudinally in accordance with and from the
locations specified in Test Methods and Definitions
A 370.
8.4 Test Methods — Tension tests shall be made in
accordance with Test Methods and Definitions A 370.
The yield strength shall be determined at 0.2% offset
PART A — FERROUS MATERIAL SPECIFICATIONS SA-311/SA-311M
or at 0.005 in./in. [0.005 mm/mm] of gage length,
total extension under load.
Workmanship, Finish, and Appearance
9.1 Surface Finish — Unless otherwise specified,
the bars shall have a commercial bright smooth surface
finish consistent with the cold finishing operations
specified in 6.4.
9.2 Bars that are thermal treated after cold finishing
may have a discolored or oxidized surface.
9.3 Oiling — The bars shall be given a surface
coating of oil or other rust inhibitor to protect against
rust during shipment.
9.4 Workmanship — The bars shall be free of
pipe, cracks, and flakes. Within the limits of good
manufacturing and inspection practices, the bars shall
be free of injurious seams, laps, segregation, or other
imperfections that, due to their nature, degree, or extent,
will interfere with the use of the material in machining
or fabrication of suitable parts.
TABLE 1
CHEMICAL REQUIREMENTS
(CAST OR HEAT ANALYSIS)A
UNS
Designation Grade Carbon, % Manganese, % Phosphorus, max % Sulfur, %
G10180 1018 0.15–0.20 0.60–0.90 0.040 0.050 max
G10350 1035 0.32–0.38 0.60–0.90 0.040 0.050 max
G10450 1045 0.43–0.50 0.60–0.90 0.040 0.050 max
G10500 1050 0.48–0.55 0.60–0.90 0.040 0.050 max
G15410 1541 0.36–0.44 1.35–1.65 0.040 0.050 max
G11170 1117 0.14–0.20 1.00–1.30 0.040 0.08–0.13
G11370 1137 0.32–0.39 1.35–1.65 0.040 0.08–0.13
G11410 1141 0.37–0.45 1.35–1.65 0.040 0.08–0.13
G11440 1144 0.40–0.48 1.35–1.65 0.040 0.24–0.33
A The intentional addition of Bi, Se, Te, and Pb is not permitted.
491
General Requirements
10.1 Material furnished under this specification shall
conform to the requirements of the current edition of
Specification A 29/A 29M unless otherwise stated.
Certification and Test Reports
11.1 A manufacturer’s certification that the material
was manufactured and tested in accordance with this
specification together with a report of the heat analysis
and tension test results shall be furnished at the time
of shipment (if requested). The report shall include the
name of the manufacturer, ASTM designation and year
date and revision letter, if any, class and grade, heat
number, size, and grain size (if requested).
Keywords
12.1 carbon steel bars; cold finished steel bars;
steel bars
SA-311/SA-311M 2001 SECTION II
TABLE 2
MECHANICAL REQUIREMENTS
Yield Strength, Elongation in Reduction
UNS Grade Diameter, Thickness, or Distance Between Tensile Strength, min., ksi 2 in. [50 mm], of Area,
No. Designation Parallel Faces, in. [mm] min., ksi [MPa] [MPa] min., % min., %
Class A — Normal Draft Cold Drawn and Stress Relieved Annealed
G10180 1018 Up to 7⁄8 [20], incl 70 [485] 60 [415] 18 40
Over 7⁄8 [20] to 11⁄4 [30], incl 65 [450] 55 [380] 16 40
Over 11⁄4 [30] to 2 [50], incl 60 [415] 50 [345] 15 35
Over 2 [50] to 3 [75], incl 55 [380] 45 [310] 15 35
G10350 1035 Up to 7⁄8 [20], incl 85 [590] 75 [520] 13 35
Over 7⁄8 [20] to 11⁄4 [30], incl 80 [550] 70 [485] 12 35
Over 11⁄4 [30] to 2 [50], incl 75 [520] 65 [450] 12 35
Over 2 [50] to 3 [75], incl 70 [485] 60 [415] 10 30
G10450 1045 Up to 7⁄8 [20], incl 95 [655] 85 [585] 12 35
Over 7⁄8 [20] to 11⁄4 [30], incl 90 [620] 80 [550] 11 30
Over 11⁄4 [30] to 2 [50], incl 85 [585] 75 [520] 10 30
Over 2 [50] to 3 [75], incl 80 [550] 70 [485] 10 30
G10500 1050 Up to 7⁄8 [20], incl 100 [690] 90 [620] 11 35
and and Over 7⁄8 [20] to 11⁄4 [30], incl 95 [655] 85 [585] 11 30
G15410 1541 Over 11⁄4 [30] to 2 [50], incl 90 [620] 80 [550] 10 30
Over 2 [50] to 3 [75], incl 85 [585] 75 [520] 10 30
G11170 1117 Up to 7⁄8 [20], incl 75 [520] 65 [450] 15 40
Over 7⁄8 [20] to 11⁄4 [30], incl 70 [485] 60 [415] 15 40
Over 11⁄4 [30] to 2 [50], incl 65 [450] 55 [380] 13 35
Over 2 [50] to 3 [75], incl 60 [415] 50 [345] 12 30
G11370 1137 Up to 7⁄8 [20], incl 95 [655] 90 [620] 11 35
and and Over 7⁄8 [20] to 11⁄4 [30], incl 90 [620] 85 [585] 11 30
G11410 1141 Over 11⁄4 [30] to 2 [50], incl 85 [585] 80 [550] 10 30
Over 2 [50] to 3 [75], incl 80 [550] 75 [520] 10 30
G11440 1144 Up to 7⁄8 [20], incl 105 [725] 95 [655] 10 30
Over 7⁄8 [20] to 11⁄4 [30], incl 100 [690] 90 [620] 10 30
Over 11⁄4 [30] to 2 [50], incl 95 [655] 85 [585] 10 25
Over 2 [50] to 3 [75], incl 90 [620] 80 [550] 10 20
Over 3 [75] to 41⁄2 [115], incl 85 [585] 75 [520] 10 20
Class B — Heavy Draft Cold Drawn and Stress Relieved Annealed
Grade In. [mm], Round or HexagonA Tensile Strength, Yield Strength, Elongation in Reduction
Designation min., ksi [MPa] min., ksi 2 in. [50 mm], of Area,
UNS [MPa] min., % min., %
G10450 1045 Up to 7⁄8 [20] incl 115 [795] 100 [690] 10 25
Over 7⁄8 [20] to 11⁄4 [30], incl 115 [795] 100 [690] 10 25
Over 11⁄4 [30] to 2 [50], incl 115 [795] 100 [690] 10 25
Over 2 [50] to 3 [75], incl 115 [795] 100 [690] 9 25
Over 3 [75] to 4 [102], incl 105 [725] 90 [620] 7 20
G10500 Up to 7⁄8 [20], incl 115 [795] 100 [690] 8 25
G15410 Over 7⁄8 [20] to 11⁄4 [30], incl 115 [795] 100 [690] 8 25
G11410 Over 11⁄4 [30] to 2 [50], incl 115 [795] 100 [690] 8 25
1050
1541
1141
and
1144 and Over 2 [50] to 3 [75], incl 115 [795] 100 [690] 8 20
G11440 Over 3 [75] to 41⁄2 [115], incl 115 [795] 100 [690] 7 20
A Maximum size for hexagons is 11⁄2 in. [40 mm].
492
PART A — FERROUS MATERIAL SPECIFICATIONS SA-311/SA-311M
SUPPLEMENTARY REQUIREMENTS
One or more of the following supplementary requirements shall apply only when
specified by the purchaser in the inquiry or order. Details of these requirements
shall be agreed upon between the manufacturer and the purchaser.
S1. Special Surface
S1.1 When inspection standards more restrictive than
visual inspection are required, special surface may be
specified.
S2. Restricted Cast or Heat Analysis
S2.1 When required, the purchaser may specify restrictive
cast or heat analysis limits on one or more
elements. The degree of restriction and the number of
elements so restricted are both subject to agreement
between the manufacturer and the purchaser.
S3. Restricted Decarburization
S3.1 The purchaser may specify a maximum affected
depth of decarburization when required for special
applications, subject to agreement between the manufacturer
and the purchaser.
S4. Nonmetallic Inclusion Requirements
(Microscopical)
S4.1 When nonmetallic inclusion requirements are
specified, the samples for testing shall be taken on a
longitudinal direction midway between the center and
493
the surface of the material. The area of the sample to
be examined should be agreed upon between the purchaser
and the manufacturer, and the test specimen
should be hardened by heating and quenched before
being polished to avoid pits. The rating of the inclusion
count should also be agreed upon and be based upon
examination at a magnification of 100 diameters. Resulfurized
steels are not subject to inclusion ratings.
S5. Restricted Incidental Elements
S5.1 The purchaser may specify limiting maximum
requirements for copper, nickel, chromium, or molybdenum
subject to agreement between the manufacturer
and the purchaser.
S6. Grain Size
S6.1 The steel shall conform to either the coarse
austenitic grain size (except as stated in S6.2), or the
fine austenitic grain size requirement of Specification
A 29/A 29M.
S6.2 Certain elements, or combinations of elements,
such as manganese, sulfur, and lead tend to produce
grain refinement and it is technically inappropriate to
ensure coarse grain size as measured by the McQuaid-
Ehn test on high manganese, high sulfur, and leaded
steels such as 1144, 1151, and 11L41.

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