ASTM A871/A871M-00a
(Specification)Standard Specification for High-Strength Low-Alloy Structural Steel Plate With Atmospheric Corrosion Resistance
Standard Specification for High-Strength Low-Alloy Structural Steel Plate With Atmospheric Corrosion Resistance
SCOPE
1.1 This specification covers high-strength low-alloy steel plate intended for use in tubular structures and poles or in other suitable applications. Two grades, 60 and 65, may be provided as-rolled, normalized or quenched and tempered as required to meet the specified mechanical requirements.
1.2 The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon structural steels with or without copper addition (see Note 1). When properly exposed to the atmosphere, this steel can be used bare (unpainted) for many applications.
Note 1—For methods of estimating the atmospheric corrosion resistance of low-alloy steels, see Guide G101.
1.3 When the steel is to be welded, it is presupposed that welding procedures suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.
1.4 Supplementary requirements in accordance with Specification A6/A6M are available, but shall apply only when specified by the purchaser at time of ordering.
1.5 The values stated in either inch-pound units or SI units are to be regarded 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. Combining values from the two systems may result in nonconformance with the specification.
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Designation: A 871/A 871M – 00a
Standard Specification for
High-Strength Low-Alloy Structural Steel Plate With
Atmospheric Corrosion Resistance
This standard is issued under the fixed designation A 871/A 871M; 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 G 101 Guide for Estimating Atmospheric Corrosion Resis-
tance of Low-Alloy Steels
1.1 This specification covers high-strength low-alloy steel
plate intended for use in tubular structures and poles or in other
3. General Requirements for Delivery
suitable applications. Two grades, 60 and 65, may be provided
3.1 Material furnished under this specification shall con-
as-rolled, normalized or quenched and tempered as required to
form to the requirements of the current edition of Specification
meet the specified mechanical requirements.
A 6/A 6M, for the ordered material, unless a conflict exists in
1.2 The atmospheric corrosion resistance of this steel in
which case this specification shall prevail.
most environments is substantially better than that of carbon
structural steels with or without copper addition (see Note 1).
4. Materials and Manufacture
When properly exposed to the atmosphere, this steel can be
4.1 The steel shall be made to fine grain practice.
used bare (unpainted) for many applications.
5. Heat Treatment
NOTE 1—For methods of estimating the atmospheric corrosion resis-
tance of low-alloy steels, see Guide G 101.
3 3
5.1 Grade 65 in thicknesses of ⁄16 to ⁄4in. [5 to 20 mm] and
3 3
1.3 When the steel is to be welded, it is presupposed that Grade 60 in thicknesses of ⁄16 to 1 ⁄8 in. [5 to 35 mm] are
welding procedures suitable for the grade of steel and intended normally furnished in the as-rolled condition. The manufac-
use or service will be utilized. See Appendix X3 of Specifica- turer has the option to heat treat this material to meet the
tion A 6/A 6M for information on weldability. mechanical requirements of Section 7. Quenched and tempered
1.4 Supplementary requirements in accordance with Speci- material shall be heat treated by heating to not less than 1650°F
fication A 6/A 6M are available, but shall apply only when [900°C], holding a sufficient time to attain uniform heat
specified by the purchaser at time of ordering. throughout the material, quenching in a suitable medium, and
1.5 The values stated in either inch-pound units or SI units tempering at not less than 1100°F [595°C]. Heat treating
are to be regarded as standard. Within the text, the SI units are temperatures shall be reported on the test certificates.
shown in brackets. The values stated in each system are not 5.2 The maximum thickness of plates is limited only by the
exact equivalents; therefore, each system must be used inde- capacity of the composition to meet the specified mechanical
pendently of the other. Combining values from the two systems requirements. The individual manufacturer shall be contacted
may result in nonconformance with the specification. to determine the actual maximum thickness for each grade and
heat treatment method.
2. Referenced Documents
6. Chemical Requirements
2.1 ASTM Standards:
A 6/A 6M Specification for General Requirements for 6.1 The heat analysis shall conform to the chemical require-
Rolled Structural Steel Bars, Plates, Shapes, and Sheet ments of Table 1.
Piling 6.2 The steel shall conform on product analysis to the
A 370 Test Methods and Definitions for Mechanical Testing chemical requirements of Table 1, subject to the product
of Steel Products analysis tolerances in Specification A 6/A 6M.
A 673/A 673M Specification for Sampling Procedure for 6.3 The atmospheric corrosion-resistance index, calculated
Impact Testing of Structural Steel on the basis of the heat analysis for the steel, as described in
Guide G 101, shall be 6.0 or higher.
NOTE 2—The user is cautioned that the Guide G 101 predictive
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
equation for calculation of an atmospheric corrosion-resistance index has
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
only been verified for the composition limits stated in that guide.
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock, and Ships.
Current edition appr
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