ASTM A331: Standard Specification for Steel Bars, Alloy, Cold-Finished
SDO: ASTM: ASTM International
DOD Adopted ANSI Approved Approved
1.1 This specification covers cold-finished alloy steel bars of grades and cross sections regarded as generally suitable for heat treatment, for machining into components, or for use in the "as-finished" condition in constructional applications, or for other similar purposes. Grades of steel are identified by grade numbers or by chemical composition (see Specifications A 304 or A 322, or Practice A 400).
1.2 Some end uses may require material superior to standard requirements, involving one or more of the available designations shown in the supplementary requirements. These shall apply only when specified individually by the purchaser in the order.
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