Table 1.1 List of Chemical Compositions of Cr-Ni-Mo Alloy Cast Steels Before Comparison
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class, Type
Symbol or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
SC 4330 — — 0.28-0.33 0.60-0.90 0.30-0.60 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 — ASTM A 958-00 SC 4340 — — 0.38-0.43 0.60-0.90 0.30-0.60 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 —
JIS G 5111:1991 SCNCrM 2 — — 0.25-0.35 0.90-1.50 0.30-0.60 0.040 0.040 0.30-0.90 1.60-2.00 0.15-0.35 —
GS-25 CrNiMo 4 1.6515 — 0.22-0.29 0.60-1.00 0.60 0.020 0.015 0.80-1.20 0.80-1.20 0.20-0.30 —
GS-34 CrNiMo 6 1.6582 — 0.30-0.37 0.60-1.00 0.60 0.020 0.015 1.40-1.70 1.40-1.70 0.20-0.30 —
GS-30 CrNiMo 8 5 1.6570 — 0.27-0.34 0.60-1.00 0.60 0.015 0.010 1.10-1.40 1.80-2.10 0.30-0.40 — DIN 17205:1992
GS-33 CrNiMo 7 4 4 1.8740 — 0.30-0.36 0.50-0.80 0.60 0.015 0.007 0.90-1.20 1.50-1.80 0.35-0.60 —
AFNOR
NF A 32-053:1992 20 NCD4-M — — 0.17-0.23 0.80-1.20 0.60 0.025 0.020 0.30-0.50 0.80-1.20 0.40-0.80 —
AFNOR
NF A 32-054:1994 G30NiCrMo8 — — 0.33 1.00 0.60 0.030 0.020 0.80-1.20 1.70-2.30 0.30-0.60 —
Table 1.2 List of Chemical Compositions of Cr-Ni-Mo Cast Alloy Steels After Comparison
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class, Type
Symbol or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 958-00 SC 4330 — — 0.28-0.33 0.60-0.90 0.30-0.60 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 —
JIS G 5111:1991 SCNCrM 2 — — 0.25-0.35 0.90-1.50 0.30-0.60 0.040 0.040 0.30-0.90 1.60-2.00 0.15-0.35 —
DIN 17205:1992 GS-33 CrNiMo 7 4 4 1.8740 — 0.30-0.36 0.50-0.80 0.60 0.015 0.007 0.90-1.20 1.50-1.80 0.35-0.60 —
AFNOR
NF A 32-054:1994 G30NiCrMo8 — — 0.33 1.00 0.60 0.030 0.020 0.80-1.20 1.70-2.30 0.30-0.60 —
Table 1.3 Chromium-Molybdenum-Aluminum (Cr-Mo-Al) Steels for Nitriding
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 355-89 (2000) A — K24065 0.38-0.43 0.50-0.70 0.15-0.35 0.035 0.040 1.40-180 — 0.30-0.40 Al 0.95-1.30
JIS G 4202:1979 SACM 645 — — 0.40-0.50 0.60 0.15-0.50 0.030 0.030 1.30-1.70 0.25 0.15-0.30 Al 0.70-1.20, Cu 0.30
DIN 17211:1987 34 CrAlMo 5 1.8507 — 0.30-0.37 0.50-0.80 0.40 0.025 0.030 1.00-1.30 — 0.15-0.25 Al 0.80-1.20
ISO 683-10:1987 41 CrAlMo 74 — — 0.38-0.45 0.50-0.80 0.50 0.030 0.035 1.50-1.80 — 0.25-0.40 Al 0.80-1.20
Table 1.4 List of Comparative Cr-Ni-Mo Wrought Austenitic Stainless Steels
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class, Type
Symbol or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 276-00 316L — S31603 0.030 2.00 1.00 0.045 0.030 16.0-18.0 10.0-14.0 2.00-3.00 —
JIS G 4303:1998 SUS316L — — 0.030 2.00 1.00 0.045 0.030 16.00-18.00 12.00-15.00 2.00-3.00 —
JIS G 4318:1998 SUS316L — — 0.030 2.00 1.00 0.045 0.030 16.00-18.00 12.00-15.00 2.00-3.00 —
X2CrNiMo17-12-2 1.4404 — 0.030 2.00 1.00 0.045 0.030 16.50-18.50 10.00-13.00 2.00-2.50 N 0.11
EN 10088-3:1995 X2CrNiMo17-12-3 1.4432 — 0.030 2.00 1.00 0.045 0.030 16.50-18.50 10.50-13.00 2.50-3.00 N 0.11
X2CrNiMo18-14-3 1.4435 — 0.030 2.00 1.00 0.045 0.030 17.00-19.00 12.00-15.00 2.50-3.00 N 0.11
ASTM A 516/A 516M-90 (2001) Grade 70 – Pressure Vessel Plates, Carbon Steel, for
Moderate- and Lower-Temperature Service:
• The “A” describes a ferrous metal, but does not subclassify it as cast iron, carbon
steel, alloy steel, or stainless steel.
• 516 is a sequential number without any relationship to the metal’s properties.
• The “M” indicates that the standard A 516M is written in rationalized SI units
(the “M” comes from the word “Metric”), hence together A 516/A 516M utilizes
both inch-pound and SI units.
• 90 indicates the year of adoption or last revision.
• (2001) number in parentheses indicates the year of last reapproval.
• Grade 70 indicates the minimum tensile strength in ksi, 70 ksi or 70,000 psi.
ASTM A 106-99 Grade A, Grade B, Grade C – Seamless Carbon Steel Pipe for HighTemperature Service:
• Typically an increase in alphabet (such as the letters A, B, C) results in higher
strength (tensile or yield) steels, and if it is an unalloyed carbon steel, an increase
in carbon content.
• In this case, Grade A: 0.25 % C (max.), 48 ksi tensile strength (min.); Grade B:
0.30 % C (min.), 60 ksi tensile strength (min.); and Grade C: 0.35 % C, 70 ksi
tensile strength (min.).
ASTM A 276-00 Type 304, 316, 410 – Stainless and Heat-Resisting Steel Bars and
Shapes:
• Types 304, 316, 410 and others are based on the SAE designation system for
stainless steels (see SAE and former AISI description that follows).
An interesting use of ASTM grade designators is found in pipe, tube, and forging products, where the
first letter “P” refers to pipe, “T” refers to tube, “TP” may refer to tube or pipe, and “F” refers to
forging. Examples are found in the following ASTM specifications:
• ASTM A 335/A 335M-99 Grade P22; Seamless Ferritic Alloy-Steel Pipe for HighTemperature Service.
• ASTM A 213/A 213M-99 Grade T22; Seamless Ferritic and Austenitic Alloy-Steel
Boiler, Superheater, and Heat-Exchanger Tubes.
• ASTM A 269-01 Grade TP304; Seamless and Welded Austenitic Stainless Steel
Tubing for General Service.
• ASTM A 312/A 312M-00 Grade TP304; Seamless and Welded Austenitic
Stainless Steel Pipes.
• ASTM A 336/A 336M-99 Class F22 – Steel Forgings, Alloy, for Pressure and HighTemperature Parts.
Table 1.5 Types and Identifying Elements in Standard SAE Carbon and Alloy Steels
Carbon Steels Description
10XX non-resulfurized, 1.00 manganese maximum
11XX resulfurized
12XX reosphorized and refurized
15XX non-resulfurized, over 1.00 manganese maximum
Alloy Steels
13XX 1.75 manganese
40XX 0.20 or 0.25 molybdenum or 0.25 molybdenum and
0.042 sulfur
41XX 0.50, 0.80, or 0.95 chromium and 0.12, 0.20, or 0.30
molybdenum
43XX 1.83 nickel, 0.50 to 0.80 chromium, and 0.25
molybdenum
46XX 0.85 or 1.83 nickel and 0.20 or 0.25 molybdenum
47XX 1.05 nickel, 0.45 chromium, 0.20 or 0.35
molybdenum
48XX 3.50 nickel and 0.25 molybdenum
51XX 0.80, 0.88, 0.93, 0.95, or 1.00 chromium
51XXX 1.03 chromium
52XXX 1.45 chromium
61XX 0.60 or 0.95 chromium and 0.13 or 0.15 vanadium
minimum
86XX 0.55 nickel, 0.50 chromium, and 0.20 molybdenum
87XX 0.55 nickel, 0.50 chromium, and 0.25 molybdenum
88XX 0.55 nickel, 0.50 chromium, and 0.35 molybdenum
92XX 2.00 silicon or 1.40 silicon and 0.70 chromium
50BXX 0.28 or 0.50 chromium
51BXX 0.80 chromium
81BXX 0.30 nickel, 0.45 chromium, and 0.12 molybdenum
94BXX 0.45 nickel, 0.40 chromium, and 0.12 molybdenum
UNS Descriptor Ferrous Metals
Dxxxxx Specified mechanical properties steels
Fxxxxx Cast irons
Gxxxxx SAE and Former AISI carbon and alloy steels (except
tool steels)
Hxxxxx AISI H-steels
Jxxxxx Cast steels
Kxxxxx Miscellaneous steels and ferrous alloys
Sxxxxx Heat and corrosion resistant (stainless) steels
Txxxxx Tool steels
UNS Descriptor Welding Filler Metals
Wxxxxx Welding filler metals, covered and tubular electrodes
classified by weld deposit composition.
Canadian Standards Association (CSA)
The Canadian Standards Association (CSA) has established metal standards for structural steels
(CSA G40.20/40.21), pipeline steels (CSA Z245.1), corrugated steel pipe (G401), wire products (CSA
G4, G12, G30.x, G279.2, G387), sprayed metal coatings (G189), and welding consumables (CSA
W48.x).
Most CSA material standards use SI units, although some are available in both SI and Imperial
units (for example, CSA G4), while others are available in both units but published separately (for
example, CSA G40.20/G40.21-M92 (SI) and G40.20/G40.21-92 (Imperial)). When a CSA standard
designation is followed by the letter “M,” it uses SI units, and if the letter “M” is not present, it may
use both units or use only Imperial units. The type of measurement units adopted in CSA standards
are specific industry driven, with some industries moving faster towards the exclusive use of SI units
than others, and thus the reason for these differences.
As far as practicable, rationalization with relevant International Standards Organization (ISO)
standards has been achieved in CSA G4, Steel Wire Rope for General Purpose and for Mine Hoisting
and for Mine Haulage. In a similar light, the 1998 edition of CSA Z245.1, Steel Line Pipe, references
requirements for ISO 1027:1993 on radiographic image indicators for non-destructive testing:
principles and identification, as well as ISO 5579:1985 on nondestructive testing – radiographic
examination of metallic materials by X- and gamma rays – basic rules.
Introduction to European Standard Steel Designation System
The Comité Européen de Normalisation (CEN) (European Committee for Standardization) is an
association of the national standards organizations of 18 countries of the European Union and of the
European Free Trade Association. The principal task of CEN is to prepare and issue European
Standards (EN), defined as a set of technical specifications established and approved in collaboration
with the parties concerned in the various member countries of CEN. They are established on the
principle of consensus and adopted by the votes of weighted majority. Adopted standards must be
implemented in their entirety as national standards by each member country, regardless of the way
in which the national member voted, and any conflicting national standards must be withdrawn.
The identification of European standards in each member country begins with the reference letters
of the country’s national standards body, for example, BS for BSI in the United Kingdom, DIN for
DIN in Germany, NF for AFNOR in France, etc., followed by the initials EN and a sequential
number of up to five digits, for example, BS EN 10025, DIN EN 10025, or NF EN 10025 are all the
same standard.
An EN standard may contain one document or it may be made up of several parts, for example, EN
10028 Parts 1 through 8, where each part specifies a particular characteristic of the steel product,
and may not include the word part in the designation, but rather replace it with a hyphen, for
example, EN 10028-1, meaning Part 1. The prefix “pr” preceding the EN designation identifies the
document as a draft standard that has not yet been approved, for example, prEN 10088-1.
EN 10027 Standard Designation System for Steels
The CEN designation system for steels is standardized in EN 10027, which is published in two parts:
• Part 1 – Steel Names
• Part 2 – Steel Numbers
The steel name is a combination of letters and numbers as described by EN 10027-1. Within this
system, steel names are classified into two groups. The system is similar in some respects to, but not
identical with, that outlined in an ISO technical report (ISO TR 4949:1989 (E) “Steel names based on
letter symbols”).
Steel Names
Steel Names Group 1 within EN 10027-1 refers to steels that are designated according to their
application and mechanical or physical properties. These have names that are comprised of one or
more letters, related to the application, followed by a number related to properties. For example, the
name for structural steels begins with the letter S, line pipe steels begin with the letter L, rail steels
begin with the letter R, and steels for pressure purposes begin with the letter P, such as EN 10028-3
Steel Name P275N.
Steel Names Group 2 is used for steels that are designated according to their chemical composition,
and are further divided into four subgroups depending on alloy content. Examples of these Group 2
steel names are :
• EN 10222-2 Steel Name 13CrMo4-5
• EN 10250-4 Steel Name X2CrNi18-9
Steel Numbers
EN 10027-2 describes the system used for assigning steel numbers, which are complementary to the
steel names described above. The number consists of a fixed number of digits and is hence more
suitable than the name for data processing purposes. The number is in the form 1.XXXX, where the
- refers to steel. The first two digits following the “1” provide the steel group number. Examples of
steel numbers are as follows:
• EN 10222-2 Steel Name 13CrMo4-5, Steel Number 1.7335
• EN 10250-4 Steel Name X2CrNi18-9, Steel Number 1.4307
ASTM Standards
ASTM
A 29/A 29M-99 Steel Bars, Carbon and Alloy, Hot-Wrought and Cold-Finished
ASTM A 108-99 Steel Bars, Carbon, Cold-Finished, Standard Quality
ASTM
A 576-90 (1995) Steel Bars, Carbon, Hot-Wrought, Special Quality
ASTM
A 322-91 (1996) Steel Bars, Alloy, Standard Grades
ASTM
A 355-89 (2000) Standard Specification for Steel Bars, Alloys, for Nitriding
SAE Standards
SAE J403 AUG95 Chemical Compositions of SAE Carbon Steels (Hot Rolled and Cold Finished Bars Only)
SAE J404 APR94 Chemical Compositions of SAE Alloy Steels (Hot Rolled and Cold Finished Bars Only)
JIS Standards
JIS G 4051:1979 Carbon Steels for Machine Structural Use
JIS G 4102:1979 Nickel Chromium Steels
JIS G 4103:1979 Nickel Chromium Molybdenum Steels
JIS G 4104:1979 Chromium Steels
JIS G 4105:1979 Chromium Molybdenum Steels
JIS G 4106:1979 Manganese Steels and Manganese Chromium Steels for Machine Structural Use
JIS G 4202:1979 Aluminium Chromium Molybdenum Steels
CEN Standards
EN 10016-2:1994 Non-Alloy Steel Rod for Drawing and/or Cold Rolling – Part 2: Specific Requirements for General Purposes Rod
EN 10016-4:1994 Non-Alloy Steel Rod for Drawing and/or Cold Rolling – Part 4: Specific Requirements for Rod for Special Applications
EN 10083-1:1991
A1:1996 Quenched and Tempered Steels – Technical Delivery Conditions for Special Steels (Amendment A1:1996)
EN 10083-2:1991
A1:1996 Quenched and Tempered Steels – Technical Delivery Conditions for Unalloyed Quality Steels (Amendment A1:1996)
EN 10084:1998 Case Hardening Steels – Technical Delivery Conditions
ISO Standards
ISO 683-1:1987 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels – Part 1: Direct-Hardening Unalloyed and Low-Alloyed
Wrought Steel in Form of Different Black Products
ISO 683-10:1987 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels – Part 10: Wrought Nitriding Steels
ISO 683-11:1987 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels – Part 11: Wrought Case-Hardening Steels
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 1005 — G10050 0.06 0.35 — 0.040 0.050 — — — —
SAE J403 AUG95 1005 — G10050 0.06 0.35 — 0.030 0.050 — — — —
EN 10016-2:1994 C4D 1.0300 — 0.06 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C3D2 1.1110 — 0.05 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1006 — G10060 0.08 0.25-0.40 — 0.040 0.050 — — — —
SAE J403 AUG95 1006 — G10060 0.08 0.25-0.40 — 0.030 0.050 — — — —
EN 10016-2:1994 C7D 1.0313 — 0.05-0.09 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.08 Cu 0.30
EN 10016-4:1994 C5D2 1.1111 — 0.07 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1008 — G10080 0.10 0.30-0.50 — 0.040 0.050 — — — —
ASTM A 108-99 1008 — G10080 0.10 0.30-0.50 — 0.040 0.050 — — — —
ASTM A 576-90 1008 — G10080 0.10 0.30-0.50 — 0.040 0.050 — — — —
SAE J403 Aug95 1008 — G10080 0.10 0.30-0.50 — 0.030 0.050 — — — —
EN 10016-2:1994 C9D 1.0304 — 0.10 0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C8D2 1.1113 — 0.06-0.10 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1010 — G10100 0.08-0.13 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 108-99 1010 — G10100 0.08-0.13 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1010 — G10100 0.08-0.13 0.30-0.60 — 0.040 0.050 — — — —
SAE J403 Aug95 1010 — G10100 0.08-0.13 0.30-0.60 — 0.030 0.050 — — — —
S 10 C — — 0.08-0.13 0.30-0.60 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35 JIS G 4051 (1979) S 09 CK — — 0.07-0.12 0.30-0.60 0.10-0.35 0.025 0.025 0.20 0.20 — Cu 0.25; Ni+Cr 0.30
EN 10016-2:1994 C10D 1.0310 — 0.08-0.13 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C10D2 1.1114 — 0.08-0.12 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C10E 1.1121 — 0.07-0.13 0.30-0.60 0.40 0.035 ≤ 0.035 — — — —
EN 10084:1998 C10R 1.1207 — 0.07-0.13 0.30-0.60 0.40 0.035 0.020- 0.040 — — — —
ISO 683-11:1987 C 10 — — 0.07-0.13 0.30-0.60 0.15-0.40 0.035 0.035 — — — —
ASTM A 29/A 29M-99 1012 — G10120 0.10-0.15 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1012 — G10120 0.10-0.15 0.30-0.60 — 0.040 0.050 — — — —
SAE J403 AUG95 1012 — G10120 0.10-0.15 0.30-0.60 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 12 C — — 0.10-0.15 0.30-0.60 0.15-0.35 0.030 0.035 — — — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C12D 1.0311 — 0.10-0.15 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C12D2 1.1124 — 0.10-0.14 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1015 — G10150 0.13-0.18 0.30-0.60 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1016 — G10160 0.13-0.18 0.60-0.90 — 0.040 0.050 — — — —
1015 — G10150 0.13-0.18 0.30-0.60 — 0.040 0.050 — — — — ASTM A 108-99 1016 — G10160 0.13-0.18 0.60-0.90 — 0.040 0.050 — — — —
1015 — G10150 0.13-0.18 0.30-0.60 — 0.040 0.050 — — — — ASTM A 576-90 1016 — G10160 0.13-0.18 0.60-0.90 — 0.040 0.050 — — — —
1015 — G10150 0.13-0.18 0.30-0.60 — 0.030 0.050 — — — — SAE J403 AUG95 1016 — G10160 0.13-0.18 0.60-0.90 — 0.030 0.050 — — — —
S 15 C — — 0.13-0.18 0.30-0.60 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35 JIS G 4051 (1979) S 15 CK — — 0.13-0.18 0.30-0.60 0.15-0.35 0.025 0.025 0.20 0.20 — Cu 0.25; Ni+Cr 0.30
EN 10016-2:1994 C15D 1.0413 — 0.12-0.17 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C15D2 1.1126 — 0.13-0.17 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C15E 1.1141 — 0.12-0.18 0.30-0.60 0.40 0.035 0.035 — — — —
C15R 1.1140 — 0.12-0.18 0.30-0.60 0.40 0.035 0.020- 0.040 — — — —
C16E 1.1148 — 0.12-0.18 0.60-0.90 0.40 0.035 0.035 — — — — EN 10084:1998
C16R 1.1208 — 0.12-0.18 0.60-0.90 0.40 0.035 0.020- 0.040 — — — —
C 15 E4 — — 0.12-0.18 0.30-0.60 0.15-0.40 0.035 0.035 — — — —
C 15 M2 — — 0.12-0.18 0.30-0.60 0.15-0.40 0.035 0.020- 0.040 — — — —
C 16 E4 — — 0.12-0.18 0.60-0.90 0.15-0.40 0.035 0.035 — — — — ISO 683-11:1987
C 16 M2 — — 0.12-0.18 0.60-0.90 0.15-0.40 0.035 0.020- 0.040 — — — —
1017 — G10170 0.15-0.20 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1018 — G10180 0.15-0.20 0.60-0.90 — 0.040 0.050 — — — —
1019 — G10190 0.15-0.20 0.70-1.00 — 0.040 0.050 — — — —
ASTM A 108-99 1018 — G10180 0.15-0.20 0.60-0.90 — 0.040 0.050 — — — —
1017 — G10170 0.15-0.20 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1018 — G10180 0.15-0.20 0.60-0.90 — 0.040 0.050 — — — —
1019 — G10190 0.15-0.20 0.70-1.00 — 0.040 0.050 — — — —
1017 — G10170 0.15-0.20 0.30-0.60 — 0.030 0.050 — — — — SAE J403 AUG95 1018 — G10180 0.15-0.20 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 17 C — — 0.15-0.20 0.30-0.60 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C18D 1.0416 — 0.15-0.20 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C18D2 1.1129 — 0.16-0.20 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1020 — G10200 0.18-0.23 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1021 — G10210 0.18-0.23 0.60-0.90 — 0.040 0.050 — — — —
1022 — G10220 0.18-0.23 0.70-1.00 — 0.040 0.050 — — — —
1020 — G10200 0.18-0.23 0.30-0.60 — 0.040 0.050 — — — — ASTM A 108-99 1022 — G10220 0.18-0.23 0.60-0.90 — 0.040 0.050 — — — —
1020 — G10200 0.18-0.23 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1021 — G10210 0.18-0.23 0.60-0.90 — 0.040 0.050 — — — —
1022 — G10220 0.18-0.23 0.70-1.00 — 0.040 0.050 — — — —
1020 — G10200 0.18-0.23 0.30-0.60 — 0.030 0.050 — — — —
SAE J403 AUG95 1021 — G10210 0.18-0.23 0.60-0.90 — 0.030 0.050 — — — —
1022 — G10220 0.18-0.23 0.70-1.00 — 0.030 0.050 — — — —
S 20 C — — 0.18-0.23 0.30-0.60 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35 JIS G 4051 (1979) S 20 CK — — 0.18-0.23 0.30-0.60 0.15-0.35 0.025 0.025 0.20 0.20 — Cu 0.25; Ni+Cr 0.30
EN 10016-2:1994 C20D 1.0414 — 0.18-0.23 0.30-0.60 0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C20D2 1.1137 — 0.18-0.23 0.30-0.50 0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
2 C 22 — — 0.17-0.24 0.40-0.70 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 3 C 22 — — 0.17-0.24 0.40-0.70 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 22 1.0402 — 0.17-0.24 0.40-0.70 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Ni+Mo 0.63
ASTM A 29/A 29M-99 1023 — — 0.20-0.25 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1023 — G10230 0.20-0.25 0.30-0.60 — 0.040 0.050 — — — —
SAE J403 AUG95 1023 — G10230 0.20-0.25 0.30-0.60 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 22 C — — 0.20-0.25 0.30-0.60 0.15-0.35 0.030 0.035 — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1025 — G10250 0.22-0.28 0.30-0.60 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1026 — G10260 0.22-0.28 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 108-99 1025 — G10250 0.22-0.28 0.30-0.60 — 0.040 0.050 — — — —
1025 — G10250 0.22-0.28 0.30-0.60 — 0.040 0.050 — — — — ASTM A 576-90 1026 — G10260 0.22-0.28 0.60-0.90 — 0.040 0.050 — — — —
1025 — G10250 0.22-0.28 0.30-0.60 — 0.030 0.050 — — — — SAE J403 AUG95 1026 — G10260 0.22-0.28 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 25 C — — 0.22-0.28 0.30-0.60 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C26D 1.0415 — 0.24-0.29 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C26D2 1.1139 — 0.24-0.29 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
2 C 25 — — 0.22-0.29 0.40-0.70 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 3 C 25 — — 0.22-0.29 0.40-0.70 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 25 — — 0.22-0.29 0.40-0.70 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 25 — — 0.22-0.29 0.40-0.70 0.10-0.40 0.045 0.045 — — — —
C 25 E 4 — — 0.22-0.29 0.40-0.70 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 25 M 2 — — 0.22-0.29 0.40-0.70 0.10-0.40 0.035 0.020- 0.040 — — — —
ASTM A 29/A 29M-99 1029 — G10290 0.25-0.31 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1029 — G10290 0.25-0.31 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1029 — G10290 0.25-0.31 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051:1979 S 28 C — — 0.25-0.31 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
ASTM A 29/A 29M-99 1030 — G10300 0.28-0.34 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 108-99 1030 — G10300 0.28-0.34 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1030 — G10300 0.28-0.34 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1030 — G10300 0.28-0.34 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 30 C — — 0.27-0.33 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-4:1994 C32D2 1.1143 — 0.30-0.34 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C30E 1.1178 — 0.27-0.34 0.50-0.80 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C30R 1.1179 — 0.27-0.34 0.50-0.80 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 30 — — 0.27-0.34 0.50-0.80 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 30 — — 0.27-0.34 0.50-0.80 0.10-0.40 0.045 0.045 — — — —
C 30 E 4 — — 0.27-0.34 0.50-0.80 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 30 M 2 — — 0.27-0.34 0.50-0.80 0.10-0.40 0.035 0.020- 0.040 — — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
JIS G 4051 (1979) S 33 C — — 0.30-0.36 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C32D 1.0530 — 0.30-0.35 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
1034 — G10340 0.32-0.38 0.50-0.80 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1035 — G10350 0.32-0.38 0.60-0.90 — 0.040 0.050 — — — —
1037 — G10370 0.32-0.38 0.70-1.00 — 0.040 0.050 — — — —
ASTM A 108-99 1035 — G10350 0.32-0.38 0.60-0.90 — 0.040 0.050 — — — —
1035 — G10350 0.32-0.38 0.60-0.90 — 0.040 0.050 — — — — ASTM A 576-90 1037 — G10350 0.32-0.38 0.70-1.00 — 0.040 0.050 — — — —
SAE J403 AUG95 1035 — G10350 0.32-0.38 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 35 C — — 0.32-0.38 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-4:1994 C36D2 1.1145 — 0.34-0.38 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C35E 1.1181 — 0.32-0.39 0.50-0.80 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C35R 1.1180 — 0.32-0.39 0.50-0.80 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 35 — — 0.32-0.39 0.50-0.80 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 35 — — 0.32-0.39 0.50-0.80 0.10-0.40 0.045 0.045 — — — —
C 35 E 4 — — 0.32-0.39 0.50-0.80 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 35 M 2 — — 0.32-0.39 0.50-0.80 0.10-0.40 0.035 0.020- 0.040 — — — —
ASTM A 29/A 29M-99 1038 — G10380 0.35-0.42 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1038 — G10380 0.35-0.42 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1038 — G10380 0.35-0.42 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 38 C — — 0.35-0.41 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C38D 1.0516 — 0.35-0.40 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C38D2 1.1150 — 0.36-0.40 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1039 — G10390 0.37-0.44 0.70-1.00 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1040 — G10400 0.37-0.44 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 108-99 1040 — G10400 0.37-0.44 0.60-0.90 — 0.040 0.050 — — — —
1039 — G10390 0.37-0.38 0.70-1.00 — 0.040 0.050 — — — — ASTM A 576-90 1040 — G10400 0.37-0.38 0.60-0.90 — 0.040 0.050 — — — —
1039 — G10400 0.37-0.43 0.70-1.00 — 0.030 0.050 — — — — SAE J403 AUG95 1040 — G10400 0.37-0.43 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 40 C — — 0.37-0.43 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-4:1994 C40D2 1.1153 — 0.38-0.42 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C40E 1.1186 — 0.37-0.44 0.50-0.80 0.040 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C40R 1.1189 — 0.37-0.44 0.50-0.80 0.040 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 40 — — 0.37-0.44 0.50-0.80 0.040 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 40 — — 0.37-0.44 0.50-0.80 0.10-0.40 0.045 0.045 — — — —
C 40 E 4 — — 0.37-0.44 0.50-0.80 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 40 M 2 — — 0.37-0.44 0.50-0.80 0.10-0.40 0.035 0.020- 0.040 — — — —
1042 — G10420 0.40-0.47 0.60-0.90 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1043 — G10430 0.40-0.47 0.70-1.00 — 0.040 0.050 — — — —
1042 — G10420 0.40-0.47 0.60-0.90 — 0.040 0.050 — — — — ASTM A 576-90 1043 — G10430 0.40-0.47 0.70-1.00 — 0.040 0.050 — — — —
1042 — G10420 0.40-0.47 0.60-0.90 — 0.030 0.050 — — — — SAE J403 AUG95 1043 — G10430 0.40-0.47 0.70-1.00 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 43 C — — 0.40-0.46 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C42D 1.0541 — 0.40-0.45 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C42D2 1.1154 — 0.40-0.44 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1044 — G10440 0.43-0.50 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1045 — G10450 0.43-0.50 0.60-0.90 — 0.040 0.050 — — — —
1046 — G10460 0.43-0.50 0.70-1.00 — 0.040 0.050 — — — —
ASTM A 108-99 1045 — G10450 0.43-0.50 0.60-0.90 — 0.040 0.050 — — — —
1044 — G10440 0.43-0.50 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1045 — G10450 0.43-0.50 0.60-0.90 — 0.040 0.050 — — — —
1046 — G10460 0.43-0.50 0.70-1.00 — 0.040 0.050 — — — —
1044 — G10440 0.43-0.50 0.30-0.60 — 0.030 0.050 — — — —
SAE J403 AUG95 1045 — G10450 0.43-0.50 0.60-0.90 — 0.030 0.050 — — — —
1046 — G10460 0.43-0.50 0.70-1.00 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 45 C — — 0.42-0.48 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-4:1994 C46D2 1.1162 — 0.44-0.48 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C45E 1.1191 — 0.42-0.50 0.50-0.80 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C45R 1.1201 — 0.42-0.50 0.50-0.80 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 45 — — 0.42-0.50 0.50-0.80 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 45 — — 0.42-0.50 0.50-0.80 0.10-0.40 0.045 0.045 — — — —
C 45 E 4 — — 0.42-0.50 0.50-0.80 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 45 M 2 — — 0.42-0.50 0.50-0.80 0.10-0.40 0.035 0.020- 0.040 — — — —
JIS G 4051 (1979) S 48 C — — 0.45-0.51 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C48D 1.0517 — 0.45-0.50 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C48D2 1.1164 — 0.46-0.50 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1049 — G10490 0.46-0.53 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1050 — G10500 0.48-0.55 0.60-0.90 — 0.040 0.050 — — — —
1053 — G10530 0.48-0.55 0.70-1.00 — 0.040 0.050 — — — —
ASTM A 108-99 1050 — G10500 0.48-0.55 0.60-0.90 — 0.040 0.050 — — — —
1049 — G10490 0.46-0.53 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1050 — G10500 0.48-0.55 0.60-0.90 — 0.040 0.050 — — — —
1053 — G10530 0.48-0.55 0.70-1.00 — 0.040 0.050 — — — —
1049 — G10490 0.46-0.53 0.60-0.90 — 0.030 0.050 — — — —
SAE J403 AUG95 1050 — G10500 0.48-0.55 0.60-0.90 — 0.030 0.050 — — — —
1053 — G10530 0.48-0.55 0.70-1.00 — 0.030 0.050 — — — —
JIS G 4051 (1979) S 50 C — — 0.47-0.53 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C50D 1.0586 — 0.48-0.53 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C50D2 1.1171 — 0.48-0.52 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C50E 1.1206 — 0.47-0.55 0.60-0.90 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C50R 1.1241 — 0.47-0.55 0.60-0.90 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 50 — — 0.47-0.55 0.60-0.90 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 50 — — 0.47-0.55 0.60-0.90 0.10-0.40 0.045 0.045 — — — —
C 50 E 4 — — 0.47-0.55 0.60-0.90 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 50 M 2 — — 0.47-0.55 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 — — — —
JIS G 4051 (1979) S 53 C — — 0.50-0.56 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C52D 1.0588 — 0.50-0.55 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
EN 10016-4:1994 C52D2 1.1202 — 0.50-0.54 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 1055 — G10550 0.50-0.60 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1055 — G10550 0.50-0.60 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1055 — G10550 0.50-0.60 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051:1979 S 55 C — — 0.52-0.58 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
EN 10016-2:1994 C56D 1.0518 — 0.53-0.58 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C56D2 1.1220 — 0.54-0.58 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C55E 1.1203 — 0.52-0.60 0.60-0.90 0.40 0.035 0.035 0.40 — 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C55R 1.1209 — 0.52-0.60 0.60-0.90 0.40 0.035 0.020- 0.040 0.40 — 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 55 — — 0.52-0.60 0.60-0.90 0.40 0.045 0.045 0.40 — 0.10 Cr+Mo+Ni 0.63
C 55 — — 0.52-0.60 0.60-0.90 0.10-0.40 0.045 0.045 — — — —
C 55 E 4 — — 0.52-0.60 0.60-0.90 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 55 M 2 — — 0.52-0.60 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 — — — —
1059 — G10590 0.55-0.65 0.50-0.80 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1060 — G10600 0.55-0.65 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1060 — G10600 0.55-0.65 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1060 — G10600 0.55-0.65 0.60-0.90 — 0.030 0.050 — — — —
JIS G 4051:1979 S 58 C — — 0.55-0.61 0.60-0.90 0.15-0.35 0.030 0.035 0.20 0.20 — Cu 0.30; Ni+Cr 0.35
C58D 1.0609 — 0.55-0.60 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01 EN 10016-2:1994 C60D 1.0610 — 0.58-0.63 0.50-0.80 0.10-0.30 0.035 0.035 0.20 0.25 0.05 Cu 0.30; Al 0.01
C58D2 1.1212 — 0.54-0.58 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007 EN 10016-4:1994 C60D2 1.1228 — 0.58-0.62 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C60E 1.1221 — 0.57-0.65 0.60-0.90 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-1:1991 C60R 1.1223 — 0.57-0.65 0.60-0.90 0.40 0.035 0.020- 0.040 0.40 0.40 0.10 Cr+Mo+Ni 0.63
EN 10083-2:1991 1 C 60 — — 0.57-0.65 0.60-0.90 0.40 0.045 0.045 0.40 0.40 0.10 Cr+Mo+Ni 0.63
C 60 — — 0.57-0.65 0.60-0.90 0.10-0.40 0.045 0.045 — — — —
C 60 E 4 — — 0.57-0.65 0.60-0.90 0.10-0.40 0.035 0.035 — — — — ISO 683-1:1987
C 60 M 2 — — 0.57-0.65 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 — — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
1064 — G10640 0.60-0.70 0.50-0.80 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1065 — G10650 0.60-0.70 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1065 — G10650 0.60-0.70 0.60-0.90 — 0.030 0.050 — — — —
C62D 1.0611 — 0.60-0.65 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-2:1994 C66D 1.0612 — 0.63-0.68 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
C68D 1.0613 — 0.65-0.70 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
C62D2 1.1222 — 0.60-0.64 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
EN 10016-4:1994 C66D2 1.1236 — 0.64-0.68 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
C68D2 1.1232 — 0.66-0.70 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
1069 — G10690 0.65-0.75 0.40-0.70 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1070 — G10700 0.65-0.75 0.60-0.90 — 0.040 0.050 — — — —
1071 — G10710 0.65-0.70 75-1.05 — 0.040 0.050 — — — —
ASTM A 576-90 1070 — G10700 0.65-0.75 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1070 — G10700 0.65-0.75 0.60-0.90 — 0.030 0.050 — — — —
C70D 1.0615 — 0.68-0.73 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01 EN 10016-2:1994 C72D 1.0617 — 0.70-0.75 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
C70D2 1.1251 — 0.68-0.72 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007 EN 10016-4:1994 C72D2 1.1242 — 0.70-0.74 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
1074 — G10740 0.70-0.80 0.50-0.80 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1075 — G10750 0.70-0.80 0.40-0.70 — 0.040 0.050 — — — —
C76D 1.0614 — 0.73-0.78 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01 EN 10016-2:1994 C78D 1.0620 — 0.75-0.80 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
C76D2 1.1253 — 0.74-0.78 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007 EN 10016-4:1994 C78D2 1.1252 — 0.76-0.80 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1078 — G10780 0.72-0.85 0.30-0.60 — 0.040 0.050 — — — —
ASTM A 576-90 1078 — G10780 0.72-0.85 0.30-0.60 — 0.040 0.050 — — — —
SAE J403 AUG95 1078 — G10780 0.72-0.85 0.30-0.60 — 0.030 0.050 — — — —
C80D 1.0622 — 0.78-0.83 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01 EN 10016-2:1994 C82D 1.0626 — 0.80-0.85 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
C80D2 1.1255 — 0.78-0.82 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007 EN 10016-4:1994
C82D2 1.1262 — 0.80-0.84 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 1080 — G10800 0.75-0.88 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1080 — G10800 0.75-0.88 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1080 — G10800 0.75-0.88 0.60-0.90 — 0.030 0.050 — — — —
EN 10016-2:1994 C86D 1.0616 — 0.83-0.88 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C86D2 1.1265 — 0.84-0.88 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
1084 — G10840 0.80-0.93 0.60-0.90 — 0.040 0.050 — — — — ASTM A 29/A 29M-99 1086 — G10860 0.80-0.93 0.30-0.50 — 0.040 0.050 — — — —
ASTM A 576-90 1084 — G10840 0.80-0.93 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1086 — G10860 0.80-0.93 0.30-0.50 — 0.030 0.050 — — — —
EN 10016-2:1994 C88D 1.0628 — 0.85-0.90 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C88D2 1.1272 — 0.86-0.90 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1090 — G10900 0.85-0.98 0.60-0.90 — 0.040 0.050 — — — —
ASTM A 576-90 1090 — G10900 0.85-0.98 0.60-0.90 — 0.040 0.050 — — — —
SAE J403 AUG95 1090 — G10900 0.85-0.98 0.60-0.90 — 0.030 0.050 — — — —
EN 10016-2:1994 C92D 1.0618 — 0.90-0.95 0.50-0.80 0.10-0.30 0.035 0.035 0.15 0.20 0.05 Cu 0.25; Al 0.01
EN 10016-4:1994 C92D2 1.1282 — 0.90-0.95 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
ASTM A 29/A 29M-99 1095 — G10950 0.90-1.03 0.30-0.50 — 0.040 0.050 — — — —
ASTM A 108-99 1095 — G10950 0.90-1.03 0.30-0.50 — 0.040 0.050 — — — —
ASTM A 576-90 1095 — G10950 0.90-1.03 0.30-0.50 — 0.040 0.050 — — — —
SAE J403 AUG95 1095 — G10950 0.90-1.03 0.30-0.50 — 0.030 0.050 — — — —
EN 10016-4:1994 C98D2 1.1283 — 0.96-1.00 0.50-0.70 0.10-0.30 0.020 0.025 0.10 0.10 0.05 Cu 0.15; Al 0.01; N 0.007
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 1522 — G15220 0.18-0.24 1.10-1.40 — 0.040 0.050 — — — —
ASTM A 576-90 1522 — G15220 0.18-0.24 1.10-1.40 — 0.040 0.050 — — — —
SAE J403 AUG95 1522 — G15220 0.18-0.24 1.10-1.40 — 0.040 0.050 — — — —
SMn 420 — — 0.17-0.23 1.20-1.50 0.15-0.35 0.030 0.030 0.35 0.25 — Cu 0.30 JIS G 4106:1979 SMnC 420 — — 0.17-0.23 1.20-1.50 0.15-0.35 0.030 0.030 0.35-0.70 0.25 — Cu 0.30
ISO 683-1:1987 22 Mn 6 — — 0.19-0.26 1.30-1.60 0.10-0.40 0.035 0.035 — — — —
ASTM A 29/A 29M-99 1536 — G15360 0.30-0.37 1.20-1.50 — 0.040 0.050 — — — —
ASTM A 576-90 1536 — G15360 0.30-0.37 1.20-1.50 — 0.040 0.050 — — — —
JIS G 4106:1979 SMn 433 — — 0.30-0.36 1.20-1.50 0.15-0.35 0.030 0.030 0.35 0.25 — Cu 0.30
EN 10083-1:1991 28 Mn 6 — — 0.25-0.32 1.30-1.65 0.40 0.035 0.035 0.40 0.40 0.10 Cr+Ni+Mo 0.63
ISO 683-1:1987 28 Mn 6 — — 0.25-0.32 1.30-1.65 0.10-0.40 0.035 0.035 — — — —
SAE J403 AUG95 1541 — G15410 0.36-0.44 1.35-1.65 — 0.040 0.050 — — — —
ASTM A 29/A 29M-99 1541 — G15410 0.36-0.44 1.35-1.65 — 0.040 0.050 — — — —
ASTM A 576-90 1541 — G15410 0.36-0.44 1.35-1.65 — 0.040 0.050 — — — —
JIS G 4106:1979 SMn 438 — — 0.35-0.41 1.35-1.65 0.15-0.35 0.030 0.030 0.35 0.25 — Cu 0.30
ISO 683-1:1987 36 Mn 6 — — 0.33-0.40 1.35-1.65 0.10-0.40 0.035 0.035 — — — —
SMn 443 — — 0.40-0.46 1.35-1.65 0.15-0.35 0.030 0.030 0.35 0.25 — Cu 0.30 JIS G 4106:1979 SMnC 443 — — 0.40-0.46 1.35-1.65 0.15-0.35 0.030 0.030 0.35-0.70 0.25 — Cu 0.30
ISO 683-1:1987 42 Mn 6 — — 0.39-0.46 1.30-1.65 0.10-0.40 0.035 0.035 — — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
JIS G 4104:1979 SCr 415 — — 0.13-0.18 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 — Cu 0.30
17Cr3 1.7016 — 0.14-0.20 0.60-0.90 0.40 0.035 0.035 0.70-1.00 — — —
EN 10084:1998 17CrS3 1.7014 — 0.14-0.20 0.60-0.90 0.40 0.035 0.020- 0.040 0.70-1.00 — — —
ASTM A 29/A 29M-99 5120 — G51200 0.17-0.22 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
ASTM A 322-91 (1996) 5120 — G51200 0.17-0.22 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
SAE J404 APR94 5120 — G51200 0.17-0.22 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
JIS G 4104:1979 SCr 420 — — 0.18-0.23 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 — Cu 0.30
20 Cr 4 — — 0.17-0.23 0.60-0.90 0.15-0.40 0.035 0.035 0.90-1.20 — — —
ISO 683-11:1987 20 CrS 4 — — 0.17-0.23 0.60-0.90 0.15-0.40 0.035 0.020- 0.040 0.90-1.20 — — —
ASTM A 29/A 29M-99 5130 — G51300 0.28-0.33 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 Cu 0.35
ASTM A 322-91 (1996) 5130 — G51300 0.28-0.33 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 Cu 0.35
SAE J404 APR94 5130 — G51300 0.28-0.33 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 Cu 0.35
JIS G 4104:1979 SCr 430 — — 0.28-0.33 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 — Cu 0.30
28Cr4 1.7030 — 0.24-0.31 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — — —
EN 10084:1998 28CrS4 1.7036 — 0.24-0.31 0.60-0.90 0.40 0.035 0.020- 0.040 0.90-1.20 — — —
ASTM A 29/A 29M-99 5132 — G51320 0.30-0.35 0.60-0.80 0.15-0.35 0.035 0.040 0.75-1.00 0.25 0.06 Cu 0.35
ASTM A 322-91 (1996) 5132 — G51320 0.30-0.35 0.60-0.80 0.15-0.35 0.035 0.040 0.75-1.00 0.25 0.06 Cu 0.35
SAE J404 APR94 5132 — G51320 0.30-0.35 0.60-0.80 0.15-0.35 0.035 0.040 0.75-1.00 0.25 0.06 Cu 0.35
JIS G 4104:1979 SCr 435 — — 0.33-0.38 0.60-0.85 0.15-0.35 0.035 0.030 0.90-1.20 0.25 — Cu 0.30
34 Cr 4 — — 0.30-0.37 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — — —
EN 10083-1:1991 34 CrS 4 — — 0.30-0.37 0.60-0.90 0.40 0.035 0.020- 0.040 0.90-1.20 — — —
34 Cr 4 — — 0.30-0.37 0.60-0.90 0.10-0.40 0.035 0.035 0.90-1.20 — — —
ISO 683-1:1987 34 CrS 4 — — 0.30-0.37 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 0.90-1.20 — — —
ASTM A 29/A 29M-99 5135 — G51350 0.33-0.38 0.60-0.80 0.15-0.35 0.035 0.040 0.80-1.05 0.25 0.06 Cu 0.35
ASTM A 322-91 (1996) 5135 — G51350 0.33-0.38 0.60-0.80 0.15-0.35 0.035 0.040 0.80-1.05 0.25 0.06 Cu 0.35
37 Cr 4 — — 0.34-0.41 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — — —
EN 10083-1:1991 37 CrS 4 — — 0.34-0.41 0.60-0.90 0.40 0.035 0.020- 0.040 0.90-1.20 — — —
37 Cr 4 — — 0.34-0.41 0.60-0.90 0.10-0.40 0.035 0.035 0.90-1.20 — — —
ISO 683-1:1987 37 CrS 4 — — 0.34-0.41 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 0.90-1.20 — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 5140 — G51400 0.38-0.43 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
ASTM A 322-91 (1996) 5140 — G51400 0.38-0.43 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
SAE J404 APR94 5140 — G51400 0.38-0.43 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
JIS G 4104:1979 SCr 440 — — 0.38-0.43 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 — Cu 0.30
41 Cr 4 — — 0.38-0.45 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — — —
EN 10083-1:1991 41 CrS 4 — — 0.38-0.45 0.60-0.90 0.40 0.035 0.020- 0.040 0.90-1.20 — — —
41 Cr 4 — — 0.38-0.45 0.60-0.90 0.10-0.40 0.035 0.035 0.90-1.20 — — —
ISO 683-1:1987 41 CrS 4 — — 0.38-0.45 0.60-0.90 0.10-0.40 0.035 0.020- 0.040 0.90-1.20 — — —
ASTM A 29/A 29M-99 5145 — — 0.38-0.43 0.70-0.90 0.15-0.35 0.035 0.040 0.70-0.90 0.25 0.06 Cu 0.35
JIS G 4104:1979 SCr 445 — — 0.43-0.48 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 — — —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
4118 — G41180 0.18–0.23 0.70–0.90 0.15-0.35 0.035 0.040 0.40–0.60 0.25 0.08–0.15 Cu 0.35
ASTM A 29/A 29M-99 4120 — G41200 0.18–0.23 0.90–1.20 0.15-0.35 0.035 0.040 0.40–0.60 0.25 0.13–0.20 Cu 0.35
4121 — G41210 0.18–0.23 0.75–1.00 0.15-0.35 0.035 0.040 0.45–0.65 0.25 0.20–0.30 Cu 0.35
4118 — G41180 0.18–0.23 0.70–0.90 0.15-0.35 0.035 0.040 0.40–0.60 0.25 0.08–0.15 Cu 0.35
ASTM A 322-91 (1996) 4120 — G41200 0.18–0.23 0.90–1.20 0.15-0.35 0.035 0.040 0.40–0.60 0.25 0.13–0.20 Cu 0.35
4121 — G41210 0.18–0.23 0.75–1.00 0.15-0.35 0.035 0.040 0.45–0.65 0.25 0.20–0.30 Cu 0.35
4118 — G41180 0.18–0.23 0.70–0.90 0.15-0.35 0.030 0.040 0.40–0.60 0.25 0.08–0.15 Cu 0.35 SAE J404 APR94 4120 — G41200 0.18–0.23 0.90–1.20 0.15-0.35 0.030 0.040 0.40–0.60 0.25 0.13–0.20 Cu 0.35
SCM 418 — — 0.16-0.21 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30
SCM 420 — — 0.18-0.23 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30
SCM 421 — — 0.17-0.23 0.70-1.00 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30 JIS G 4105:1979
SCM 822 — — 0.20-0.25 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.35-0.45 Cu 0.30
18CrMo4 1.7243 — 0.15-0.21 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — 0.15-0.25 —
18CrMoS4 1.7244 — 0.15-0.21 0.60-0.90 0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.25 —
22CrMoS3-5 1.7333 — 0.19-0.24 0.70-1.00 0.40 0.035 0.020-0.040 0.40-0.70 — 0.40-0.50 —
20MoCr3 1.7320 — 0.17-0.23 0.60-0.90 0.40 0.035 0.035 0.40-0.70 — 0.30-0.40 —
20MoCrS3 1.7319 — 0.17-0.23 0.60-0.90 0.40 0.035 0.020-0.040 0.40-0.70 — 0.30-0.40 —
20MoCr4 1.7321 — 0.17-0.23 0.70-1.00 0.40 0.035 0.035 0.30-0.60 — 0.40-0.50 —
EN 10084:1998
20MoCrS4 1.7323 — 0.17-0.23 0.70-1.00 0.40 0.035 0.020-0.040 0.30-0.60 — 0.40-0.50 —
18 CrMo 4 — — 0.15-0.21 0.60-0.90 0.15-0.40 0.035 0.035 0.90-1.20 — 0.15-0.25 — ISO 683-11:1987 18 CrMoS 4 — — 0.15-0.21 0.60-0.90 0.15-0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.25 —
ASTM A 29/A 29M-99 4130 — G41300 0.28-0.33 0.40-0.60 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 4130 — G41300 0.28-0.33 0.40-0.60 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SAE J404 APR94 4130 — G41300 0.28-0.33 0.40-0.60 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SCM 430 — — 0.28-0.33 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30 JIS G 4105:1979 SCM 432 — — 0.27-0.37 0.30-0.60 0.15-0.35 0.030 0.030 1.00-1.50 0.25 0.15-0.30 Cu 0.30
25 CrMo 4 — — 0.22-0.29 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 —
EN 10083-1:1991 25 CrMoS 4 — — 0.22-0.29 0.60-0.90 0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
25 CrMo 4 — — 0.22-0.29 0.60-0.90 0.15-0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 — ISO 683-1:1987 25 CrMoS 4 — — 0.22-0.29 0.60-0.90 0.15-0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 4137 — G41370 0.35-0.40 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 4137 — G41370 0.35-0.40 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SAE J404 APR94 4137 — G41370 0.35-0.40 0.70-0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
JIS G 4105:1979 SCM 435 — — 0.33-0.38 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30
34 CrMo 4 — — 0.30-0.37 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 —
EN 10083-1:1991 34 CrMoS 4 — — 0.30-0.37 0.60-0.90 0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
34 CrMo 4 — — 0.30-0.37 0.60-0.90 0.10-0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 — ISO 683-1:1987 34 CrMoS 4 — — 0.30-0.37 0.60-0.90 0.10-0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
ASTM A 29/A 29M-99 4140 — G41400 0.38-0.43 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 4140 — G41400 0.38-0.43 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SAE J404 APR94 4140 — G41400 0.38-0.43 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 — 0.15-0.25 Cu 0.35
JIS G 4105:1979 SCM 440 — — 0.38-0.43 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30
42 CrMo 4 — — 0.38-0.45 0.60-0.90 0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 —
EN 10083-1:1991 42 CrMoS 4 — — 0.38-0.45 0.60-0.90 0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
42 CrMo 4 — — 0.38-0.45 0.60-0.90 0.10-0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 — ISO 683-1:1987 42 CrMoS 4 — — 0.38-0.45 0.60-0.90 0.10-0.40 0.035 0.020-0.040 0.90-1.20 — 0.15-0.30 —
ASTM A 29/A 29M-99 4145 — G41450 0.43-0.48 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 4145 — G41450 0.43-0.48 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SAE J404 APR94 4145 — G41450 0.43-0.48 0.75-1.00 0.15-0.35 0.030 0.040 0.80-1.10 — 0.15-0.25 Cu 0.35
JIS G 4105:1979 SCM 445 — — 0.43-0.48 0.60-0.85 0.15-0.35 0.030 0.030 0.90-1.20 0.25 0.15-0.30 Cu 0.30
ASTM A 29/A 29M-99 4150 — G41500 0.48-0.53 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 4150 — G41500 0.48-0.53 0.75-1.00 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.15-0.25 Cu 0.35
SAE J404 APR94 4150 — G41500 0.48-0.53 0.75-1.00 0.15-0.35 0.030 0.040 0.80-1.10 — 0.15-0.25 Cu 0.35
EN 10083-1:1991 50 CrMo 4 — — 0.46-0.54 0.50-0.80 0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 —
ISO 683-1:1987 50 CrMo 4 — — 0.38-0.54 0.50-0.80 0.10-0.40 0.035 0.035 0.90-1.20 — 0.15-0.30 —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
JIS G 4103:1979 SNCM 415 — — 0.12-0.18 0.40-0.70 0.15-0.35 0.030 0.030 0.40-0.65 1.60-2.00 0.15-0.30 Cu 0.30
ISO 683-11:1987 17 NiCrMo 6 — — 0.14-0.20 0.60-0.90 0.15-0.40 0.035 0.035 0.80-1.10 1.20-1.60 0.15-0.25 —
ASTM A 29/A 29M-99 4320 — G43200 0.17-0.22 0.45-0.65 0.15-0.35 0.035 0.040 0.40-0.60 1.65-2.00 0.20-0.30 Cu 0.35
ASTM A 322-91 (1996) 4320 — G43200 0.17-0.22 0.45-0.65 0.15-0.35 0.035 0.040 0.40-0.60 1.65-2.00 0.20-0.30 Cu 0.35
SAE J404 APR94 4320 — G43200 0.17-0.22 0.45-0.65 0.15-0.35 0.035 0.040 0.40-0.60 1.65-2.00 0.20-0.30 Cu 0.35
JIS G 4103:1979 SNCM 420 — — 0.17-0.23 0.40-0.70 0.15-0.35 0.030 0.030 0.40-0.65 1.60-2.00 0.15-0.30 Cu 0.30
EN 10084:1998 20NiCrMoS6-4 1.6571 — 0.16-0.23 0.50-0.90 0.40 0.035 0.020- 0.040 0.60-0.90 1.40-1.70 0.25-0.35 —
4340 — G43400 0.38-0.43 0.60-0.80 0.15-0.35 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35 ASTM A 29/A 29M-99 E4340 — G43406 0.38-0.43 0.65-0.85 0.15-0.35 0.025 0.025 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35
4340 — G43400 0.38-0.43 0.60-0.80 0.15-0.35 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35 ASTM A 322-91 (1996) E4340 — G43406 0.38-0.43 0.65-0.85 0.15-0.35 0.025 0.025 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35
4340 — G43400 0.38-0.43 0.60-0.80 0.15-0.35 0.035 0.040 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35 SAE J404 APR94 E4340 — G43406 0.38-0.43 0.65-0.85 0.15-0.35 0.025 0.025 0.70-0.90 1.65-2.00 0.20-0.30 Cu 0.35
JIS G 4103:1979 SNCM 439 — — 0.36-0.43 0.60-0.90 0.15-0.35 0.030 0.030 0.60-1.00 1.60-2.00 0.15-0.30 Cu 0.30
ASTM A 29/A 29M-99 8620 — G86200 0.18-0.23 0.70-0.90 0.15-0.35 0.035 0.04 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 8620 — G86200 0.18-0.23 0.70-0.90 0.15-0.35 0.035 0.04 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
SAE J404 APR94 8620 — G86200 0.18-0.23 0.70-0.90 0.15-0.35 0.030 0.040 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
JIS G 4103:1979 SNCM 220 — — 0.17-0.23 0.60-0.90 0.15-0.35 0.030 0.030 0.40-0.65 0.40-0.70 0.15-0.30 Cu 0.30
20NiCrMo2-2 1.6523 — 0.17-0.23 0.65-0.95 0.40 0.035 0.035 0.35-0.70 0.40-0.70 0.15-0.25 —
EN 10084:1998 20NiCrMoS2-2 1.6526 — 0.17-0.23 0.65-0.95 0.40 0.035 0.020- 0.040 0.35-0.70 0.40-0.70 0.15-0.25 —
20 NiCrMo 2 — — 0.17-0.23 0.65-0.95 0.15-0.40 0.035 0.035 0.30-0.65 0.40-0.70 0.15-0.25 —
ISO 683-11:1987 20 NiCrMoS 2 — — 0.17-0.23 0.65-0.95 0.15-0.40 0.035 0.020- 0.040 0.30-0.65 0.40-0.70 0.15-0.25 —
ASTM A 29/A 29M-99 8640 — G86400 0.38-0.43 0.75-1.00 0.15-0.35 0.035 0.040 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
ASTM A 322-91 (1996) 8640 — G86400 0.38-0.43 0.75-1.00 0.15-0.35 0.035 0.040 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
SAE J404 APR94 8640 — G86400 0.38-0.43 0.75-1.00 0.15-0.35 0.030 0.040 0.40-0.60 0.40-0.70 0.15-0.25 Cu 0.35
JIS G 4103:1979 SNCM 240 — — 0.38-0.43 0.70-1.00 0.15-0.35 0.030 0.030 0.40-0.65 0.40-0.70 0.15-0.30 Cu 0.30
41 CrNiMo 2 — — 0.37-0.44 0.70-1.00 0.10-0.40 0.035 0.035 0.40-0.60 0.40-0.70 0.15-0.30 —
ISO 683-1:1987 41 CrNiMoS 2 — — 0.37-0.44 0.70-1.00 0.10-0.40 0.035 0.020- 0.040 0.40-0.60 0.40-0.70 0.15-0.30 —
ASTM A 29/A 29M-99 E9310 — G93106 0.08-0.13 0.45-0.65 0.15-0.30 0.025 0.025 1.00-1.40 3.00-3.50 0.08-0.15 —
EN 10084:1998 14NiCrMo13-4 1.6657 — 0.11-0.17 0.30-0.60 0.40 0.035 0.035 0.80-1.10 3.00-3.50 0.10-0.25 —
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 355-89 (2000) A — K24065 0.38-0.43 0.50-0.70 0.15-0.35 0.035 0.040 1.40-180 — 0.30-0.40 Al 0.95-1.30
JIS G 4202:1979 SACM 645 — — 0.40-0.50 0.60 0.15-0.50 0.030 0.030 1.30-1.70 0.25 0.15-0.30 Al 0.70-1.20, Cu 0.30
DIN 17211:1987 34 CrAlMo 5 1.8507 — 0.30-0.37 0.50-0.80 0.40 0.025 0.030 1.00-1.30 — 0.15-0.25 Al 0.80-1.20
ISO 683-10:1987 41 CrAlMo 74 — — 0.38-0.45 0.50-0.80 0.50 0.030 0.035 1.50-1.80 — 0.25-0.40 Al 0.80-1.20
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
50B44 — G50441 0.43–0.48 0.75–1.00 0.15–0.35 0.035 0.040 0.20–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B46 — G50461 0.44–0.49 0.75–1.00 0.15–0.35 0.035 0.040 0.20–0.35 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B50 — G50501 0.48–0.53 0.75–1.00 0.15–0.35 0.035 0.040 0.40–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B60 — G50601 0.56–0.64 0.75–1.00 0.15–0.35 0.035 0.040 0.40–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
ASTM A 29/A 29M-99
51B60 — G51601 0.56–0.64 0.75–1.00 0.15–0.35 0.035 0.040 0.70–0.90 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B44 — G50441 0.43–0.48 0.75–1.00 0.15–0.35 0.035 0.040 0.20–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B46 — G50461 0.44–0.49 0.75–1.00 0.15–0.35 0.035 0.040 0.20–0.35 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B50 — G50501 0.48–0.53 0.75–1.00 0.15–0.35 0.035 0.040 0.40–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B60 — G50601 0.56–0.64 0.75–1.00 0.15–0.35 0.035 0.040 0.40–0.60 0.25 0.06 B 0.0005-0.003; Cu 0.35
ASTM A 322-91 (1996)
51B60 — G51601 0.56–0.64 0.75–1.00 0.15–0.35 0.035 0.040 0.70–0.90 0.25 0.06 B 0.0005-0.003; Cu 0.35
50B46 — G50461 0.44–0.49 0.75–1.00 0.15–0.35 0.030 0.040 0.20–0.35 0.25 0.06 B 0.0005-0.003; Cu 0.35 SAE J404 APR94 51B60 — G51601 0.56–0.64 0.75–1.00 0.15–0.35 0.030 0.040 0.70–0.90 0.25 0.06 B 0.0005-0.003; Cu 0.35
27MnCrB5-2 1.7182 — 0.24-0.30 1.10-1.40 0.40 0.035 0.040 0.30-0.60 — — B 0.0008-0.0050
EN 10083-3:1995 33MnCrB5-2 1.7185 — 0.30-0.36 1.20-1.50 0.40 0.035 0.040 0.30-0.60 — — B 0.0008-0.0050
39MnCrB5-2 1.7189 — 0.36-0.42 1.40-1.70 0.40 0.035 0.040 0.30-0.60 — — B 0.0008-0.0050
Weight, %, max, Unless Otherwise Specified Standard
Designation
Grade, Class,
Type, Symbol
or Name
Steel
Number
UNS
Number C Mn Si P S Cr Ni Mo Others
ASTM A 29/A 29M-99 6150 — G61500 0.48-0.53 0.70–0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 V 0.15 min
ASTM A 322-91 (1996) 6150 — G61500 0.48-0.53 0.70–0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 V 0.15 min
SAE J404 APR94 6150 — G61500 0.48-0.53 0.70–0.90 0.15-0.35 0.035 0.040 0.80-1.10 0.25 0.06 V 0.15 min
EN 10083-1:1991 51 CrV 4 — — 0.47-0.55 0.70-1.10 0.40 0.030 0.035 0.90-1.20 — — V 0.10-0.25
ISO 683-1:1987 51 CrV 4 — — 0.47-0.55 0.60-1.00 0.10-0.40 0.035 0.035 0.80-1.10 — — V 0.10-0.25