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ASTM A494/A494M-18a

Historical Revision

Standard Specification for Castings, Nickel and Nickel Alloy

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1.1 This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-molybdenum-chromium alloy castings for corrosion-resistant service.

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 nonconformance with the standard.

1.3 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 nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-molybdenum-chromium alloy castings for corrosion resistant service. The castings shall be heat treated. When Class 1 is specified, grades CY40 and M25S shall be supplied in the as-cast condition. When Class 2 is specified, grades CY40 and M25S shall be supplied in the solution treated condition. When Class 3 is specified, grade M25S shall be supplied in the age-hardened condition. The chemical composition requirements of the alloys are presented. The tensile property requirements including the heat treatment procedure for the castings are presented in detail. It is required that one tension test shall be made from each master heat except for grades M25S and CY5SnBiM when the master heat is used to pour the castings. One tension test shall be made from each melt except for grades M25S and CY5SnBiM. Test results shall conform to the specified tensile requirements.


SDO ASTM: ASTM International
Document Number A494
Publication Date Nov. 1, 2018
Language en - English
Page Count 7
Revision Level 18a
Supercedes
Committee A01.18
Publish Date Document Id Type View
May 1, 2024 A0494_A0494M-24 Revision
March 1, 2022 A0494_A0494M-22 Revision
Nov. 1, 2018 A0494_A0494M-18A Revision
Sept. 1, 2018 A0494_A0494M-18 Revision
Nov. 1, 2017 A0494_A0494M-17A Revision
March 15, 2017 A0494_A0494M-17 Revision
May 1, 2015 A0494_A0494M-15 Revision
Oct. 1, 2014 A0494_A0494M-14A Revision
May 1, 2014 A0494_A0494M-14 Revision
April 1, 2013 A0494_A0494M-13 Revision
Sept. 1, 2012 A0494_A0494M-12 Revision
May 1, 2009 A0494_A0494M-09E01 Revision
May 1, 2009 A0494_A0494M-09 Revision
Oct. 1, 2008 A0494_A0494M-08 Revision
May 1, 2007 A0494_A0494M-07 Revision
Sept. 1, 2005 A0494_A0494M-05 Revision
Oct. 1, 2004 A0494_A0494M-04 Revision
Oct. 1, 2003 A0494_A0494M-03AE01 Revision
Oct. 1, 2003 A0494_A0494M-03A Revision
May 10, 2003 A0494_A0494M-03 Revision
Sept. 10, 2001 A0494_A0494M-01AE01 Revision
Sept. 10, 2001 A0494_A0494M-01A Revision
Sept. 10, 2001 A0494_A0494M-01 Revision
Sept. 10, 2001 A0494_A0494M-00 Revision