ASTM-A940 › Historical Revision Information
Standard Specification for Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors
The following bibliographic material is provided to assist you with your purchasing decision:
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
To find similar documents by ASTM Volume:
01.05 (Steel--Bars, Forgings, Bearing, Chain, Tool)
To find similar documents by classification:
77.140.85 (Iron and steel forgings)
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Document Number
ASTM-A940-95
Revision Level
1995 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
July 15, 1995
Document Type
Specification
Page Count
4 pages
Committee Number
A01.06