ASTM A1008/A1008M-07
(Specification)Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable
Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable
SCOPE
1.1 This specification covers cold-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improved formability, solution hardened, and bake hardenable steel sheet, in coils and cut lengths.
1.2 Cold rolled steel sheet is available in the designations as listed in .
1.3 This specification does not apply to steel strip as described in Specification A 109/A 109M.
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as 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.
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Designation: A 1008/A 1008M – 07
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, Solution Hardened, and Bake Hardenable
This standard is issued under the fixed designation A 1008/A 1008M; 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* A 620/A 620M Specification for Drawing Steel (DS),
3
Sheet, Carbon, Cold-Rolled
1.1 This specification covers cold-rolled, carbon, structural,
A 941 Terminology Relating to Steel, Stainless Steel, Re-
high-strength low-alloy, high-strength low-alloy with im-
lated Alloys, and Ferroalloys
proved formability, solution hardened, and bake hardenable
E18 Test Methods for Rockwell Hardness and Rockwell
steel sheet, in coils and cut lengths.
Superficial Hardness of Metallic Materials
1.2 Cold rolled steel sheet is available in the designations as
E 517 TestMethodforPlasticStrainRatio rforSheetMetal
listed in 4.1.
E 646 Test Method for Tensile Strain-Hardening Exponents
1.3 This specification does not apply to steel strip as
(n -Values) of Metallic Sheet Materials
described in Specification A 109/A 109M.
1.4 The values stated in either inch-pound units or SI units
3. Terminology
are to be regarded separately as standard. Within the text, the
3.1 Definitions of Terms Specific to This Standard:
SI units are shown in brackets. The values stated in each
3.1.1 For definitions of other terms used in this specifica-
system are not exact equivalents; therefore, each system must
tion, refer to Terminology A 941.
be used independently of the other.
3.1.2 aging—loss of ductility with an increase in hardness,
2. Referenced Documents yield strength, and tensile strength that occurs when steel that
2
has been slightly cold worked (such as by temper rolling) is
2.1 ASTM Standards:
stored for some time.
A 109/A 109M Specification for Steel, Strip, Carbon (0.25
3.1.2.1 Discussion—Aging increases the tendency of a steel
Maximum Percent), Cold-Rolled
to exhibit stretcher strains and fluting.
A 366/A 366M Specification for Commercial Steel (CS)
3
3.1.3 bake hardenable steel—steel in which significant
Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled
aging is realized when moderate heat treatment, such as that
A 370 Test Methods and Definitions for MechanicalTesting
used for paint baking, follows straining or cold working.
of Steel Products
3.1.4 solid-solution hardened steel or solution hardened
A 568/A 568M Specification for Steel, Sheet, Carbon,
steel—steel strengthened through additions of elements, such
Structural, and High-Strength, Low-Alloy, Hot-Rolled and
as Mn, P, or Si, that can be dissolved within the crystalline
Cold-Rolled, General Requirements for
structure of steels.
3.1.4.1 Discussion—Alloying elements that form a solid-
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
solution with iron provide strengthening as a result of local
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
distortions in atomic arrangements, which arise as a result of
A01.19 on Steel Sheet and Strip.
the mismatch between the atomic sizes of such elements and
Current edition approved Feb. 1, 2007. Published February 2007. Originally
that of iron.
approved in 2000. Last previous edition approved in 2006 as A 1008/
A 1008M – 06a.
3.1.5 stabilization—addition of one or more nitride- or
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
carbide-forming elements, or both, such as titanium and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
columbium, to control the level of the interstitial elements of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. carbon and nitrogen in the steel.
3
Withdrawn.
*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
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A 1008/A 1008M – 07
3.1.5.1 Discussion—Stabilizing improves formability and 5.1.3 Classification (either exposed, unexposed, temper
increases resistance to aging. rolled, or annealed last) (see 4.3);
3.1.6 vacuum degassing—process of refining liquid steel in 5.1.4 Finish (see 9.1);
which the liquid is exposed to a vacuum as part of a special 5.1.5 Oiled or not oiled, as required (see 9.2);
technique for removing impurities or for decarburizing the 5.1.6 Dimensions (thickness, thickness tolerance table (see
steel. 5.1.6.1), width, a
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A1008/A1008M–06a Designation: A 1008/A 1008M – 07
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, Solution Hardened, and Bake Hardenable
This standard is issued under the fixed designation A 1008/A 1008M; 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.
1. Scope*
1.1This1.1 This specification covers cold-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with
improved formability, solution hardened, and bake hardenable steel sheet, in coils and cut lengths.
1.2 Cold rolled steel sheet is available in the designations as listed in 4.1.
1.3 This specification does not apply to steel strip as described in Specification A 109/A 109M.
1.4 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other.
2. Referenced Documents
2
2.1 ASTM Standards:
A 109/A 109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
3
A 366/A 366M Specification for Commercial Steel (CS) Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 568/A 568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
0
A 620/A 620M Specification for Drawing Steel (DS), Sheet, Carbon, Cold-Rolled
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E18 Test Methods for Rockwell Hardness of Metallic Materials
E 517 Test Method for Plastic Strain Ratio r for Sheet Metal
E 646 Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 For definitions of other terms used in this specification, refer to Terminology A 941.
3.1.2 aging—loss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steel that has
been slightly cold worked (such as by temper rolling) is stored for some time.
3.1.2.1 Discussion—Aging increases the tendency of a steel to exhibit stretcher strains and fluting.
3.1.3 bake hardenable steel—steel in which significant aging is realized when moderate heat treatment, such as that used for
paint baking, follows straining or cold working.
3.1.4 solid-solution hardened steel or solution hardened steel—steel strengthened through additions of elements, such as Mn,
P, or Si, that can be dissolved within the crystalline structure of steels.
3.1.4.1 Discussion—Alloying elements that form a solid-solution with iron provide strengthening as a result of local distortions
in atomic arrangements, which arise as a result of the mismatch between the atomic sizes of such elements and that of iron.
3.1.5 stabilization—addition of one or more nitride- or carbide-forming elements, or both, such as titanium and columbium, to
control the level of the interstitial elements of carbon and nitrogen in the steel.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.19
on Steel Sheet and Strip.
Current edition approved Oct.Feb. 1, 2006.2007. Published October 2006.February 2007. Originally approved in 2000. Last previous edition approved in 2006 as
A 1008/A 1008M – 06a.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
3
Withdrawn.
*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
---------------------- Page: 1 ----------------------
A 1008/A 1008M – 07
3.1.5.1 Discussion—Stabilizing improves formability and increases resistance to aging.
3.1.6 vacuum degassing—process of refining liquid steel in which the liquid is exposed to a vacuum as part of a special
technique for removing impurities
...
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