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ASTM A940-96(2001)
Standard Specification for Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors
STANDARD published on 10.9.1996
The information about the standard:
Designation standards: ASTM A940-96(2001)
Note: WITHDRAWN
Publication date standards: 10.9.1996
SKU: NS-4904
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Annotation of standard text ASTM A940-96(2001) :
Keywords:
differential heat treatment, steel forgings, turbine rotor, vacuum treated steel, ICS Number Code 77.140.85 (Iron and steel forgings)
Additional information
| 1. 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. |
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