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ASTM-A891/A891M:2021 Edition

ASTM-A891/A891M:2021 Edition

$29.79

A891/A891M-16(2021) Standard Specification for Precipitation Hardening Iron Base Superalloy Forgings for Turbine Rotor Disks and Wheels

Published By Publication Date Number of Pages
ASTM 2021 4
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ASTM A891/A891M-16-Reapproved2021

Active Standard: Standard Specification for Precipitation Hardening Iron Base Superalloy Forgings for Turbine Rotor Disks and Wheels

ASTM A891/A891M

Scope

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 A788/A788M, apply, except as amended herein.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

age hardened; alloy steelā€”turbine disk; alloy steelā€”turbine wheel; creep; elevated temperature service; forging; precipitation hardened; stress rupture; superalloy;

ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)

DOI: 10.1520/A0891_A0891M-16R21

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