ASTM A 891 : 1998 : R2003
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Standard Specification for Precipitation Hardening Iron Base Superalloy Forgings for Turbine Rotor Disks and Wheels
Hardcopy , PDF
18-09-2020
English
10-04-2003
1.1 This specification covers precipitation hardening iron base superalloy forgings which are primarily intended for use as turbine rotor disks and wheels.
1.2 Two heat treatments are covered. Selection will depend upon design, service conditions, mechanical properties, and elevated temperature characteristics.
1.3 All of the provisions of Specification A 788, apply, except as amended herein.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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