ASTM A1011/A1011M-13
(Specification)Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
ABSTRACT
This specification covers hot-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improved formability, and ultra-high strength steel sheet and strip, in coils and cut lengths. The steels covered here are: Commercial Steels of types A, B, C, and D; Drawing Steels of types A and B; Structural Steels of grades 30 [205], 33 [230], 36 [250] (with Types 1 and 2), 40 [275], 45 [310], 50 [340], 55 [380], 60 [410], 70 [480], and 80 [550]; High-strength Low-alloy Steel of classes 1 and 2 in grades 45 [310], 50 [340], 55 [380], 60 [410], 65 [450], and 70 [480]; High-strength Low-alloy steels with improved formability in grades 50 [340], 60 [410], 70 [480], and 80 [550]; and Ultra-high Strength Steels of types 1 and 2 in grades 90 [620] and 100 [690]. Heat and product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, manganese, phosphorus, sulfur, aluminum, silicon, copper, nickel, chromium, molybdenum, vanadium, niobium, titanium, nitrogen, and boron. Except for Commercial and Drawing steels, all other steels shall undergo two tension tests, and shall conform to the following mechanical requirements: yield strength, tensile strength, and elongation. All steels shall undergo bending tests.
SCOPE
1.1 This specification covers hot-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improved formability, and ultra-high strength steel sheet and strip, in coils and cut lengths.
1.2 Hot rolled steel sheet and strip is available in the designations as listed in 4.1.
1.3 This specification is not applicable to the steel covered by Specification A635/A635M.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
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Designation:A1011/A1011M −13
StandardSpecification for
Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-
Strength Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, and Ultra-High Strength
This standard is issued under the fixed designation A1011/A1011M; 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 U.S. Department of Defense.
1. Scope* A749/A749M Specification for Steel, Strip, Carbon and
High-Strength, Low-Alloy, Hot-Rolled, General Require-
1.1 This specification covers hot-rolled, carbon, structural,
ments for
high-strength low-alloy, high-strength low-alloy with im-
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
provedformability,andultra-highstrengthsteelsheetandstrip,
Alloys, and Ferroalloys
in coils and cut lengths.
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.2 Hot rolled steel sheet and strip is available in the
terials
designations as listed in 4.1.
1.3 This specification is not applicable to the steel covered 3. Terminology
by Specification A635/A635M.
3.1 Definitions—For definitions of other terms used in this
1.4 The values stated in either SI units or inch-pound units specification refer to Terminology A941.
are to be regarded separately as standard. The values stated in
3.2 Definitions of Terms Specific to This Standard:
each system may not be exact equivalents; therefore, each
3.2.1 aging—loss of ductility with an increase in hardness,
system shall be used independently of the other. Combining
yield strength, and tensile strength that occurs when steel,
values from the two systems may result in non-conformance
which has been slightly cold worked (such as by temper
with the standard.
rolling) is stored for some time.
3.2.1.1 Discussion—Aging also increases the tendency to-
2. Referenced Documents
ward stretcher strains and fluting.
2
2.1 ASTM Standards:
3.2.2 inclusion control, n—the process of reducing the
A370 Test Methods and Definitions for Mechanical Testing
volume fraction of inclusions or modifying the shape of
of Steel Products
inclusions to improve formability, weldability, and machinabil-
A568/A568M Specification for Steel, Sheet, Carbon,
ity.
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
3.2.2.1 Discussion—Inclusions, especially those elongated
Cold-Rolled, General Requirements for
duringtherollingprocess,createtheconditionsforinitiatingor
A635/A635M Specification for Steel, Sheet and Strip,
propagating cracks when the material is stretched or bent
Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon,
during the manufacture of a part (or both). The adverse effects
Structural, High-Strength Low-Alloy, and High-Strength
of inclusions are minimized by reducing the content of
Low-Alloy with Improved Formability, General Require-
inclusions in the steel or by altering the shape of inclusions
ments for
through the use of additions during the steelmaking process
1 that change the elongated shape of the inclusions to less
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
harmful small, well dispersed globular inclusions (or both).
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.19 on Steel Sheet and Strip.
3.2.3 stabilization—addition of one or more nitride or car-
Current edition approved Oct. 1, 2013. Published October 2013. Originally
bide forming elements, or both, such as titanium and
approvedin2000.Lastpreviouseditionapprovedin2012asA1011/A1011M – 12b.
DOI: 10.1520/A1011_A1011M-13.
columbium, to control the level of the interstitial elements
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
carbon and nitrogen in the steel.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.2.3.1 Discussion—Stabilization improves formability and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. increases resistance to aging.
*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 ----------------------
A1011/A1011M−13
3.2.4 vacuum degassing—process of refining liquid steel in higher strength, savings in weight, and weldability are impor-
which the liquid is exposed to a vacuum as part of a special tant.Atmosphericcorrosionresistanceofthesesteelsisequiva-
technique for removing impurities or for decarburizing the lent to plain carbon steels. With copper specified, the atmo-
steel. s
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: A1011/A1011M − 12b A1011/A1011M − 13
Standard Specification for
Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-
Strength Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, and Ultra-High Strength
This standard is issued under the fixed designation A1011/A1011M; 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*
1.1 This specification covers hot-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improved
formability, and ultra-high strength steel sheet and strip, in coils and cut lengths.
1.2 Hot rolled steel sheet and strip is available in the designations as listed in 4.1.
1.3 This specification is not applicable to the steel covered by Specification A635/A635M.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
A635/A635M Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon, Structural,
High-Strength Low-Alloy, and High-Strength Low-Alloy with Improved Formability, General Requirements for
A749/A749M Specification for Steel, Strip, Carbon and High-Strength, Low-Alloy, Hot-Rolled, General Requirements for
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E18 Test Methods for Rockwell Hardness of Metallic Materials
3. Terminology
3.1 Definitions—For definitions of other terms used in this specification refer to Terminology A941.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 aging—loss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steel, which has
been slightly cold worked (such as by temper rolling) is stored for some time.
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 A01.19
on Steel Sheet and Strip.
Current edition approved Nov. 1, 2012Oct. 1, 2013. Published November 2012October 2013. Originally approved in 2000. Last previous edition approved in 2012 as
A1011/A1011M – 12a.A1011/A1011M – 12b. DOI: 10.1520/A1011_A1011M-12b.10.1520/A1011_A1011M-13.
2
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.
3.2.1.1 Discussion—
Aging also increases the tendency toward stretcher strains and fluting.
3.2.2 inclusion control, n—the process of reducing the volume fraction of inclusions or modifying the shape of inclusions to
improve formability, weldability, and machinability.
3.2.2.1 Discussion—
*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 ----------------------
A1011/A1011M − 13
Inclusions, especially those elongated during the rolling process, create the conditions for initiating or propagating cracks when
the material is stretched or bent during the manufacture of a part (or both). The adverse effects of inclusions are minimized by
reducing the content of inclusions in the steel or by altering the shape of inclusions through the use of additions during the
steelmaking process that change the elongated shape of the inclusions to less harmful small, well dispersed globular inclusions (or
both).
3.2.3 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 carbon and nitrogen in the steel.
3.2.3.1 Discussion—
Stabilization improves formability and increases resistance to aging.
3.2.4 vacuum degassing—process of refining liquid steel
...
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