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Designation: A 980 – 97 (Reapproved 2003)
An American National Standard
Standard Specification for
Steel, Sheet, Carbon, Ultra High Strength Cold Rolled
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This standard is issued under the fixed designation A 980; 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 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.
2. Referenced Documents
2.1 ASTM Standards:
A 568/A 568M Specification for Steel, Sheet, Carbon, and
High-Strength Low-Alloy, Hot-Rolled and Cold Rolled,
General Requirements for
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3. Ordering Information
3.1 It is the purchaser’s responsibility to specify in the
purchase order all ordering information necessary to purchase
the needed 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 diam-
eter 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 con-
form to the applicable requirements of the current edition of
Specification A 568/A 568M unless otherwise provided herein.
6. Chemical Composition
6.1 The cast or heat analysis shall conform to the require-
ments 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
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
specimen shall conform to the tensile requirements specified in
Table 3.
7.1.2 Number of Tests—Two tests shall be made from each
heat or from each lot of 50 tons. When the amount of finished
material from a heat or lot is less than 50 tons, one test shall be
made. When material rolled from one heat differs by 0.050 in.
or more in thickness, one tension test shall be made from the
thickest and thinnest material regardless of the weight repre-
sented.
7.1.3 Location and Orientation:
7.1.3.1 Tension test specimens shall be taken at a point
immediately adjacent to the material to be qualified.
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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 April 10, 2003. Published June 2003. Originally
approved in 1997. Last previous edition approved in 1997 as A 980–97.
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Annual Book of ASTM Standards, Vol 01.03.
TABLE 1 Chemical Requirements
Composition - Weight % Heat Analysis
Element Grade
130 160 190 220
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
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