ASTM A980/A980M-11
(Specification)Standard Specification for Steel, Sheet, Carbon, Ultra High Strength Cold Rolled
Standard Specification for Steel, Sheet, Carbon, Ultra High Strength Cold Rolled
ABSTRACT
This specification covers the standard for cold rolled ultra high strength carbon steel sheet in coils or cut lengths. The sheet shall be produced from aluminum killed steel and shall undergo continuous annealing to austenitic temperatures and then be water quenched. Cast or heat analysis shall conform to the prescribed chemical composition requirements in carbon, manganese, phosphorus, sulfur, and aluminum. Tension test shall be done on the point immediately adjacent to the material to be tested and properties shall conform to the specified tensile strength. The sheet shall have a matte surface finish texture and shall have cut edges. Unless otherwise specified, the sheet shall undergo oiling.
SCOPE
1.1 This specification covers a cold rolled ultra high strength carbon steel sheet in coils or cut lengths. The product is available in four strength levels. The steel's strength is obtained by water quenching from an austenitic temperature resulting in a martensitic microstructure. This product is intended for miscellaneous applications where ultra high strength, weight saving, and good weldability are important.
1.2 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:A980/A980M −11
Standard Specification for
1
Steel, Sheet, Carbon, Ultra High Strength Cold Rolled
This standard is issued under the fixed designationA980/A980M; 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 3.1.6 Coil size (must include inside diameter, outside
diameter, and maximum mass),
1.1 This specification covers a cold rolled ultra high
3.1.7 Quantity,
strength carbon steel sheet in coils or cut lengths. The product
3.1.8 Application (show part identification and description),
is available in four strength levels. The steel’s strength is
3.1.9 Special Requirements (if required), and
obtained by water quenching from an austenitic temperature
3.1.10 Cast or heat analysis report (request if required).
resulting in a martensitic microstructure. This product is
intended for miscellaneous applications where ultra high
4. Materials and Manufacture
strength, weight saving, and good weldability are important.
4.1 Melting Practice—This sheet shall be produced from
1.2 The values stated in either SI units or inch-pound units
aluminum killed steel.
are to be regarded separately as standard. The values stated in
4.2 Annealing—The material shall be continuous annealed
each system may not be exact equivalents; therefore, each
to austenitic temperatures and water quenched.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
5. General Requirements
with the standard.
5.1 Materials furnished under this specification shall con-
2. Referenced Documents
form to the applicable requirements of the current edition of
2
Specification A568/A568M unless otherwise provided herein.
2.1 ASTM Standards:
A568/A568M Specification for Steel, Sheet, Carbon,
6. Chemical Composition
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
Cold-Rolled, General Requirements for
6.1 The cast or heat analysis shall conform to the require-
ments prescribed in Table 1 and Table 2.
3. Ordering Information
6.1.1 EachoftheelementslistedinTable2shallbeincluded
in the report of the cast or heat analysis. Where the amount of
3.1 It is the purchaser’s responsibility to specify in the
copper nickel, chromium or molybdenum is less than 0.02 %,
purchase order all ordering information necessary to purchase
the analysis may be reported as <0.02 %. When the amount of
theneededmaterial.Examplesofsuchinformationinclude,but
vanadium or columbium is less than 0.008 %, the analysis may
are not limited to:
be reported as <0.008 %.
3.1.1 ASTM specification number and year of issue,
3.1.2 Name of material (cold rolled ultra high strength steel
7. Mechanical Properties
sheet),
3.1.3 Grade (see Table 1),
7.1 Tension Tests:
3.1.4 Specify oiled or not oiled as required,
7.1.1 Requirements—Materials as represented by the test
3.1.5 Dimensions (thickness, width and whether cut lengths
specimen shall conform to the tensile requirements specified in
or coils),
Table 3.
7.1.2 Number of Tests—Two tests shall be made from each
heat or from each lot of 50 tons [45 000 kg]. When the amount
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
of finished material from a heat or lot is less than 50 tons
Stainless Steel and Related Alloys and is the direct responsibility of Subcommit-
[45 000 kg], one test shall be made. When material rolled from
teeA01.19 on Steel Sheet and Strip.
one heat differs by 0.050 in. [1.27 mm] or more in thickness,
Current edition approved Nov. 1, 2011. Published November 2011. Originally
one tension test shall be made from the thickest and thinnest
approved in 1997. Last previous edition approved in 2003 as A980–97(2010). DOI:
10.1520/A0980_A0980M-11.
material regardless of the weight represented.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.1.3 Location and Orientation:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1.3.1 Tension test specimens shall be taken at a point
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. immediately adjacent to the material to be qualified.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A980/A980M−11
TABLE 1 Chemical Requirements
7.1.4 Retests:
Composition - Weight % Heat Analysis
7.1.4.1 A retest shall be permitted if the results of an
Element Grade
original tension specimen are within 2 ksi [15 MPa] of the
130 [900] 160 [1100] 190 [1300] 220 [1500]
Carbon, max 0.10 0.15 0.23 0.2
...
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:A980–97(Reapproved 2010) Designation: A980/A980M – 11
Standard Specification for
1
Steel, Sheet, Carbon, Ultra High Strength Cold Rolled
This standard is issued under the fixed designationA980/A980M; 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 a cold rolled ultra high strength carbon steel sheet in coils or cut lengths. The product is available
infourstrengthlevels.Thesteel’sstrengthisobtainedbywaterquenchingfromanaustenitictemperatureresultinginamartensitic
microstructure. This product is intended for miscellaneous applications where ultra high strength, weight saving, and good
weldability are important.
1.2 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:
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
3. Ordering Information
3.1 Itisthepurchaser’sresponsibilitytospecifyinthepurchaseorderallorderinginformationnecessarytopurchasetheneeded
material. Examples of such information include, but are not limited to:
3.1.1 ASTM specification number and year of issue,
3.1.2 Name of material (cold rolled ultra high strength steel sheet),
3.1.3 Grade (see Table 1),
3.1.4 Specify oiled or not oiled as required,
3.1.5 Dimensions (thickness, width and whether cut lengths or coils),
3.1.6 Coil size (must include inside diameter, outside diameter, and maximum mass),
3.1.7 Quantity,
3.1.8 Application (show part identification and description),
3.1.9 Special Requirements (if required), and
3.1.10 Cast or heat analysis report (request if required).
4. Materials and Manufacture
4.1 Melting Practice—This sheet shall be produced from aluminum killed steel.
4.2 Annealing—The material shall be continuous annealed to austenitic temperatures and water quenched.
5. General Requirements
5.1 Materials furnished under this specification shall conform to the applicable requirements of the current edition of
Specification A568/A568M unless otherwise provided herein.
6. Chemical Composition
6.1 The cast or heat analysis shall conform to the requirements prescribed in Table 1 and Table 2.
6.1.1 Each of the elements listed in Table 2 shall be included in the report of the cast or heat analysis. Where the amount of
copper nickel, chromium or molybdenum is less than 0.02 %, the analysis may be reported as <0.02 %. When the amount of
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.Nov. 1, 2010.2011. Published October 2010.November 2011. Originally approved in 1997. Last previous edition approved in 2003 as
A980–97(20103). DOI: 10.1520/A0980-97R10.10.1520/A0980_A0980M-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A980/A980M – 11
TABLE 1 Chemical Requirements
Composition - Weight % Heat Analysis
Element Grade
130 160 190 220
130 [900] 160 [1100] 190 [1300] 220 [1500]
Carbon, max 0.10 0.15 0.23 0.28
Manganese, max 0.60 0.60 0.60 0.60
Phosphorus, max 0.030 0.030 0.030 0.030
Sulfur, max 0.035 0.035 0.035 0.035
Aluminum, min 0.01 0.01 0.01 0.01
TABLE 2 Limits on Unspecified Elements
A
Element Composition Weight % Heat Analysis
Copper
When specified, min .20
When not specified, max .20
Nickel, max 0.20
Chromium, max 0.15
Molybdenum, max 0.06
Vanadium, max 0.008
Columbium, max 0.008
A
Minimum copper added.
vanadium or columbium is less than 0.008 %, the analysis may be reported as <0.008 %.
7. Mechanical Properties
7.1 Tension Tests:
7.1.1 Requirements—Materials as represented by the test
...
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