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Description of ASTM-B917 2012ASTM B917 / B917M - 12Standard Practice for Heat Treatment of Aluminum-Alloy Castings from All ProcessesActive Standard ASTM B917 / B917M | Developed by Subcommittee: B07.01 Book of Standards Volume: 02.02 ASTM B917 / B917MAbstract 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. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. Scope 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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.2.1 SI Units The SI units are shown in brackets or in separate tables. 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 and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards B26/B26M Specification for Aluminum-Alloy Sand Castings B108/B108M Specification for Aluminum-Alloy Permanent Mold Castings B275 Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric) B618/B618M Specification for Aluminum-Alloy Investment Castings B686/B686M Specification for Aluminum Alloy Castings, High-Strength B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products B918/B918M Practice for Heat Treatment of Wrought Aluminum Alloys B955/B955M Specification for Aluminum-Alloy Centrifugal Castings B969 Specification for Aluminum-Alloy Castings Produced by the Squeeze Casting, Thixocast and Rheocast Semi-Solid Casting Processes G110 Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution ANSI Standard H35.1 Alloy and Temper Designation Systems for Aluminum Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600, Arlington, VA 22209, http://www.aluminum.org.SAE Standard AMS2771 Heat Treatment of Aluminum Alloy CastingsKeywords aluminum alloys; centrifugal casting; investment casting; permanent mold casting; precipitation heat treatment; rheocast casting; sand casting; solution heat treatment; squeeze casting; thixocast casting; ICS Code ICS Number Code 25.200 (Heat treatment); 77.150.10 (Aluminium products) DOI: 10.1520/B0917_B0917M-12 ASTM International is a member of CrossRef. ASTM B917 / B917MThis book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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