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ASTM A668/A668M-96e1

Historical Revision

Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use

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1.1 This specification covers untreated and heat-treated carbon and alloy steel forgings for general industrial use. Other ASTM specifications for forgings are available for specific applications such as pressure vessels, railroad use, turbine generators, gearing, and others involving special temperature requirements.

1.2 Hot-rolled or cold finished bars are not within the scope of this specification.

1.3 Six classes of carbon steel and seven classes of alloy steel forgings are listed (see Section 7) , which indicates their required heat treatments, as well as mechanical properties.

1.4 Supplementary requirements of an optional nature are provided. These shall apply only when specified by the purchaser.

1.5 Appendix X1 lists the grades corresponding to the various grades of Specifications A235, A237, and A243 which have been superseded by this specification.

1.6 The values stated in either inch-pound units or SI units are to be regarded separately as the standard; within the text and tables, the SI units are shown in brackets. The values stated in each system are not exactly equivalent; therefore; each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.


SDO ASTM: ASTM International
Document Number A668
Publication Date May 10, 1996
Language en - English
Page Count 8
Revision Level 96e1
Supercedes
Committee A01.06
Publish Date Document Id Type View
May 1, 2023 A0668_A0668M-23 Revision
May 15, 2022 A0668_A0668M-22 Revision
Nov. 1, 2021 A0668_A0668M-21A Revision
Sept. 1, 2021 A0668_A0668M-21 Revision
May 1, 2020 A0668_A0668M-20A Revision
March 1, 2020 A0668_A0668M-20 Revision
Sept. 1, 2019 A0668_A0668M-19A Revision
May 1, 2019 A0668_A0668M-19 Revision
May 1, 2017 A0668_A0668M-17 Revision
May 1, 2016 A0668_A0668M-16 Revision
March 1, 2015 A0668_A0668M-15 Revision
Oct. 1, 2014 A0668_A0668M-14 Revision
June 1, 2013 A0668_A0668M-13E01 Revision
June 1, 2013 A0668_A0668M-13 Revision
March 1, 2004 A0668_A0668M-04 Revision
July 10, 2002 A0668_A0668M-03 Revision
July 10, 2002 A0668_A0668M-02 Revision
May 10, 1996 A0668_A0668M-96E01 Revision
Oct. 1, 2009 A0668_A0668M-04R09 Reaffirmation
May 10, 1996 A0668_A0668M-96R01 Reaffirmation