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ASTM A521 2003 Edition, September 10, 2003
Complete Document
Superseded By: ASTM A521/A521M
Standard Specification for Steel, Closed-Impression Die Forgings for General Industrial Use
Additional Comments: W/D S/S BY ASTM A521/A521M
Page Count:10
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(Footnote *)

This specification covers untreated and heat-treated steel, closed-impression die forgings (Note 1) for general industrial use.

NOTE 1 - For the definition of a forging, refer General Requirements Specification A 788.

The Grades of forgings are as follows, the choice depending on design and stress or service to be imposed:

Grade CA - Untreated, carbon steel forgings,

Grades CC, CC1, and CE - Annealed, normalized and tempered, carbon steel forgings,

Grade CF - Normalized and tempered carbon steel forgings,

Grade CF1 - Double normalized and tempered carbon steel forgings,

Grade CG - Quenched and tempered, or normalized, quenched and tempered carbon steel forgings,

Grade AA - Annealed, normalized, or normalized and tempered alloy steel forgings,

Grades AB and AC - Normalized and tempered alloy steel forgings, and

Grades AD, AE, AF, AG, and AH - Normalized, quenched, and tempered alloy steel forgings.

The values stated in inch-pound units are to be regarded as the standard.

Footnote * - A Summary of Changes section appears at the end of this standard.