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1.1 This specification covers nonmagnetic alloy steel retaining ring forgings for generators.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A342/A342M Test Methods for Permeability of Feebly Magnetic Materials
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A531/A531M Practice for Ultrasonic Examination of Turbine-Generator Steel Retaining Rings
A788/A788M Specification for Steel Forgings, General Requirements
E45 Test Methods for Determining the Inclusion Content of Steel
E112 Test Methods for Determining Average Grain Size
E165/E165M Practice for Liquid Penetrant Examination for General Industry
ICS Number Code 77.140.85 (Iron and steel forgings)
UNSPSC Code 31132100(Steel forgings)
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ASTM A289 / A289M-97(2008), Standard Specification for Alloy Steel Forgings for Nonmagnetic Retaining Rings for Generators, ASTM International, West Conshohocken, PA, 2008, www.astm.orgBack to Top