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1.1 This specification covers nonmagnetic alloy steel retaining ring forgings for generators.
1.2 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.
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)
ASTM A289 / A289M-97(2003), Standard Specification for Alloy Steel Forgings for Nonmagnetic Retaining Rings for Generators, ASTM International, West Conshohocken, PA, 2003, www.astm.orgBack to Top