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ASTM A469/A469M-07(2022)

Historical Reaffirmation

Standard Specification for Vacuum-Treated Steel Forgings for Generator Rotors

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1.1 This specification covers vacuum-treated basic electric steel forgings for generator rotors.

1.2 Supplementary requirements are provided, both in this standard and in Specification A788/A788M, for use when additional testing, inspection or processing is required by the purchaser.

1.3 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This specification covers vacuum-treated basic electric steel forgings for use in generator rotors. Steel materials shall be manufactured by vacuum degassing, heat treatment, rough machining, and boring. Heat and product analyses shall be carried out to examine conformation of the specimens with chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, and antimony. Forgings shall also go through tension, impact, and Charpy V-notch tests, and shall conform with the following tensile and notch toughness requirements: tensile strength, yield strength, elongation, reduction of area, FATT50, and Charpy absorbed energy. Nondestructive test methods such as ultrasonic and internal inspection shall be performed.


SDO ASTM: ASTM International
Document Number A469
Publication Date March 1, 2022
Language en - English
Page Count 4
Revision Level 07(2022)
Supercedes
Committee A01.06
Publish Date Document Id Type View
March 1, 2007 A0469_A0469M-07 Revision
March 1, 2006 A0469_A0469M-06 Revision
May 1, 2004 A0469_A0469M-04 Revision
March 1, 2022 A0469_A0469M-07R22 Reaffirmation
March 15, 2017 A0469_A0469M-07R17 Reaffirmation
May 1, 2012 A0469_A0469M-07R12 Reaffirmation