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ASTM-A940 1996

ASTM-A940 1996

$35.75

A940-96 Standard Specification for Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors

Published By Publication Date Number of Pages
ASTM 1996 4
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ASTM A940-96

Historical Standard: Standard Specification for Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors

ASTM A940

Scope

1.1 This specification covers vacuum treated, alloy steel forgings, differentially heat treated for turbine rotors.

1.2 Differential heat treatment of a rotor forging involves subjecting two portions of the forging concurrently to two different austenitizing temperatures followed by two different cooling rates for normalizing and quenching, and then tempering, to achieve creep resistance in the high pressure (HP) portion and high toughness in the low pressure (LP) portion.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

Keywords

differential heat treatment; steel forgings; turbine rotor; vacuum treated steel

ICS Code

ICS Number Code n/a

DOI: 10.1520/A0940-96

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ASTM-A940 1996
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