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ASTM B917/B917M-12(2020)

Historical Reaffirmation

Standard Practice for Heat Treatment of Aluminum-Alloy Castings from All Processes

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1.1 This practice covers, when specified by material specification or purchase order, the heat treatment of aluminum alloy castings from all casting processes.

1.1.1 The heat treatment of aluminum alloy castings used in specific aerospace applications is covered in AMS 2771 and specific AMS material specifications.

1.1.2 The heat treatment of wrought aluminum alloys is covered in Practice B918/B918M.

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 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.

1.3 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.

1.4 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 practice covers the requirements for the heat treatment of aluminum alloy castings from any casting process such as investment casting, permanent mould casting, sand casting, and others. It excludes castings that are used in specific aerospace applications or those made from wrought aluminum alloys. The aluminum alloys should be subjected to controlled heat treatment using the usual air chamber furnace or other heating media like lead baths, oil baths, fluidized beds, or even superheated steam. Air chambers may be oil or gas fired or may also be electrically heated but the atmosphere inside each should be controlled to prevent porosity. Quenching is normally performed by immersing castings in a hot-water bath. It is important that the furnace be calibrated before it is used initially and after any change in the furnace. Likewise, temperature-measurement systems should be regularly checked for accuracy.


SDO ASTM: ASTM International
Document Number B917
Publication Date Nov. 1, 2020
Language en - English
Page Count 12
Revision Level 12(2020)
Supercedes
Committee B07.01
Publish Date Document Id Type View
May 1, 2012 B0917_B0917M-12 Revision
May 1, 2011 B0917_B0917M-11 Revision
Nov. 1, 2009 B0917_B0917M-09 Revision
Aug. 7, 2008 B0917_B0917M-08 Revision
Sept. 1, 2007 B0917_B0917M-07 Revision
June 10, 2001 B0917_B0917M-01 Revision
Nov. 1, 2020 B0917_B0917M-12R20 Reaffirmation
Sept. 1, 2005 B0917_B0917M-01R05 Reaffirmation