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ASTM A1040.pdf
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Designation: A 1040 – 06
Standard Guide for
Specifying Harmonized Standard Grade Compositions for
Wrought Carbon, Low-Alloy, and Alloy Steels
1
This standard is issued under the fixed designation A 1040; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This guide covers ASTM Subcommittees A01.02,
A01.03, A01.06, A01.09, A01.11, A01.15, A01.19, A01.22, and
A01.28 for specifying chemical composition limits of wrought
carbon, low-alloy, and alloy steels. It is intended that these
recommended grade composition limits be suitable for adop-
tion by other standardization bodies that prepare standards for
carbon, low-alloy, and alloy steel products, including discon-
tinued steels.
1.2 Included in this guide are the recommendations for
determining the number of significant figures for specifying
chemical composition.
1.3 The carbon and alloy steel grades in all standards
overseen by the aforementioned ASTM subcommittees have
been included, except those grades applicable to restricted
special end uses.
1.4 Not addressed are minor composition modifications that
a specific ASTM subcommittee may find necessary to accom-
modate effects of normal processing or to enhance fabricability
by the producer or user, or both.
1.5 Also not generally addressed (except where established
by ASTM subcommittees) is a complete rationalization of all
limits, especially where such would conflict with long-standing
practices and is not justified by special technical effect.
1.6 This guide does not address discontinued or formerly
standard steel grades. A listing of such steel grades can be
found in
SAE J1249. Also excluded from this guide are cast
materials and welding filler metals.
2. Referenced Documents
2.1 ASTM Standards:
2
A 941 Terminology Relating to Steel, Stainless Steel, Re-
lated Alloys, and Ferroalloys
2.2 SAE Standards:
3
SAE J403 Chemical Compositions of SAE Carbon Steels
SAE J404 Chemical Compositions of SAE Alloy Steels
SAE J1013 Measurement of Whole Body Vibration of the
Seated Operator of Off-Highway Work Machines
SAE J1249 Former SAE Standard and Former SAE EX-
Steels
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 long product, n—generic term describing wrought
bars, rod, wire, rail, tubing (welded and seamless), plate, and
pipe.
3.1.1.1 Discussion—Product forms such as “C” shapes,
“HP” shapes, “L” shapes, “M” shapes, “MC” shapes, “S”
shapes, “W” shapes, and sheet piling are considered long
products. Such product forms are produced to mechanical
properties and are not normally produced to the chemical
compositions listed in this guide.
3.1.2 flat product, n—generic term describing wrought sheet
and strip.
3.2 Refer to Terminology
A 941 for additional definitions of
terms used in this guide.
4. Significance and Use
4.1 It is anticipated that the ASTM Subcommittees A01.02,
A01.03, A01.06, A01.09, A01.11, A01.15, A01.19, A01.22, and
A01.28 will use the standard composition limits listed in this
guide for the grades identified in their product specifications
unless there is a specific technical justification for doing
otherwise.
4.2 The composition limits given in this guide are to be used
as guides in determining limits for each of the elements
included in the total composition of each grade. The compo-
sition limits have been established with the intent that each
ASTM subcommittee will find it necessary to require only a
minimum number of changes to reflect specific technical
effects. Section
5 lists the general guidelines followed for
1
This guide is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.97 on Harmonization of Carbon and Alloy Steel Compositions.
Current edition approved June 15, 2006. Published June 2006. Originally
approved in 2004. Last previous edition approved in 2004 as A 1040 – 04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001.
1
*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.
Copyright ASTM International
Provided by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
--`,,```,,,,````-`-`,,`,,`,`,,`---
determining the limits for each element; the limits established
in this guide are based upon these guidelines.
5. General Guidelines Used for Determining Composition
Limits
5.1
Table 1 gives typical chemical composition limits for
respective elements.
6. Harmonized Standard Grade Wrought Carbon, Low-
Alloy, and Alloy Steel Compositions
6.1 The harmonized composition limits are given in
Tables
2-17, grouped by metallurgical classification. Within all tables,
grades are listed in numerical order.
6.2 Unless adopted by the appropriate product subcommit-
tee in an ASTM standard, the compositions described in this
guide shall not be used for specifying an ASTM product.
6.3 Criteria for the addition of grades to the grade lists in
this guide are as follows: (1) New grades will be considered
based upon the grade meeting a standard grade designation and
chemistry; (2) New grades shall have an annual production or
consumption of 250 tons (225 Mg); (3) New grades shall have
the sponsorship of at least two individual users or producers.
7. Keywords
7.1 alloy steels; carbon steels; harmonized carbon, low-
alloy, and alloy steel compositions; low-alloy steels
TABLE 1 Expression of Chemical Composition Limits
Chemical Element Chemical Composition Limit
C, Cr, Cu, Mn, Mo, Ni, Pb, Si Two decimal places (0.xx % ) or (1.xx %)
Al, Ca, N, Nb (Cb), P, S, Sn, Ti, V Three decimal places (0.xxx %)
B Four decimal places (0.xxxx %)
A1040–06
2
Copyright ASTM International
Provided by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
--`,,```,,,,````-`-`,,`,,`,`,,`---
TABLE 2 Chemical Composition for Nonresulfurized Carbon Steels
Grade
Composition,
A,B,C
%
CMn
P max S max P max S max
Long Product Flat Product
1001 0.01 max 0.35 max 0.030 0.035
1002 0.02 max 0.35 max 0.030 0.035
1003 0.04 max 0.35 max 0.030 0.035
1004 0.02/0.06 0.35 max 0.030 0.035
1005 0.06 max 0.35 max 0.040 0.050 0.030 0.035
1006
B
0.02/0.08 0.45 max 0.030 0.035
1006
D
0.08 max 0.25-0.45 0.040 0.050
1006
E
0.08 max 0.45 max 0.030 0.035
1007 0.02/0.10 0.50 max 0.030 0.035
1008
D
0.10 max 0.30-0.50 0.040 0.050
1008
E
0.10 max 0.50 max 0.030 0.035
1009 0.15 max 0.60 max 0.030 0.035
1010 0.08-0.13 0.30-0.60 0.040 0.050 0.030 0.035
1011 0.08-0.13 0.60-0.90 0.040 0.050
1012 0.10-0.15 0.30-0.60 0.040 0.050 0.030 0.035
1013
D,F
0.11-0.16 0.50-0.80 0.040 0.050
1013
E
0.11-0.16 0.30-0.60 0.030 0.035
1015 0.13-0.18 0.30-0.60 0.040 0.050 0.030 0.035
1016 0.13-0.18 0.60-0.90 0.040 0.050 0.030 0.035
1017 0.15-0.20 0.30-0.60 0.040 0.050 0.030 0.035
1018 0.15-0.20 0.60-0.90 0.040 0.050 0.030 0.035
1019 0.15-0.20 0.70-1.00 0.040 0.050 0.030 0.035
1020 0.18-0.23 0.30-0.60 0.040 0.050 0.030 0.035
1021 0.18-0.23 0.60-0.90 0.040 0.050 0.030 0.035
1022 0.18-0.23 0.70-1.00 0.040 0.050 0.030 0.035
1023 0.20-0.25 0.30-0.60 0.040 0.050 0.030 0.035
1024 0.18-0.25 1.30-1.65 0.035 0.035
1025 0.22-0.28 0.30-0.60 0.040 0.050 0.030 0.035
1026 0.22-0.28 0.60-0.90 0.040 0.050 0.030 0.035
1027 0.22-0.29 1.20-1.55 0.035 0.035
1029 0.25-0.31 0.60-0.90 0.040 0.050
1030 0.28-0.34 0.60-0.90 0.040 0.050 0.030 0.035
1033 0.30-0.36 0.70-1.00 0.040 0.050 0.030 0.035
1034 0.32-0.38 0.50-0.80 0.040 0.050
1035 0.32-0.38 0.60-0.90 0.040 0.050 0.030 0.035
1037 0.32-0.38 0.70-1.00 0.040 0.050 0.030 0.035
1038 0.35-0.42 0.60-0.90 0.040 0.050 0.030 0.035
1039 0.37-0.44 0.70-1.00 0.040 0.050 0.030 0.035
1040 0.37-0.44 0.60-0.90 0.040 0.050 0.030 0.035
1042 0.40-0.47 0.60-0.90 0.040 0.050 0.030 0.035
1043 0.40-0.47 0.70-1.00 0.040 0.050 0.030 0.035
1044 0.43-0.50 0.30-0.60 0.040 0.050
1045 0.43-0.50 0.60-0.90 0.040 0.050 0.030 0.035
1046 0.43-0.50 0.70-1.00 0.040 0.050 0.030 0.035
1049 0.46-0.53 0.60-0.90 0.040 0.050 0.030 0.035
1050 0.48-0.55 0.60-0.90 0.040 0.050 0.030 0.035
1053 0.48-0.55 0.70-1.00 0.040 0.050
1055 0.50-0.60 0.60-0.90 0.040 0.050 0.030 0.035
1059 0.55-0.65 0.50-0.80 0.040 0.050
1060 0.55-0.65 0.60-0.90 0.040 0.050 0.030 0.035
1064 0.60-0.70 0.50-0.80 0.040 0.050 0.030 0.035
1065 0.60-0.70 0.60-0.90 0.040 0.050 0.030 0.035
1069 0.65-0.75 0.40-0.70 0.040 0.050
1070 0.65-0.75 0.60-0.90 0.040 0.050 0.030 0.035
1070m
G
0.65-0.75 0.80-1.10 0.025 0.025
1071 0.65-0.70 0.75-1.05 0.040 0.050
1074 0.70-0.80 0.50-0.80 0.040 0.050 0.030 0.035
1075 0.70-0.80 0.40-0.70 0.040 0.050
1078 0.72-0.85 0.30-0.60 0.040 0.030 0.030 0.035
1080 0.75-0.88 0.60-0.90 0.040 0.050 0.030 0.035
1084 0.80-0.93 0.60-0.90 0.040 0.050 0.030 0.035
A1040–06
3
Copyright ASTM International
Provided by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
--`,,```,,,,````-`-`,,`,,`,`,,`---
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