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This specification covers gray iron castings for products of the automobile, truck, tractor and allied industries. The materials shall be classified into eight grades (G1800, G2500, G3000, G3500, G4000, G2500a, G3500b and G3500c) based on the range of their casting hardness, chemical composition and microstructure. Grades G1800 and G2500 shall be annealed. Alloy gray iron automotive camshafts of grade designation G4000d shall conform to the required values of casting hardness, chemical compositions of chromium, molybdenum, and nickel and microstructure. The cam areas of camshaft casting shall undergo selective hardening by flame or induction hardening and shall conform to the required values of depth and surface hardness.
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.
1.1 This specification applies to gray iron castings, cast in sand molds, used in the products of the automobile, truck, tractor, and allied industries.
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Federal StandardFed. Std. No. 123 Marking for Shipment (Civil Agencies)
A247 Test Method for Evaluating the Microstructure of Graphite in Iron Castings
E10 Test Method for Brinell Hardness of Metallic Materials
ICS Number Code 77.140.80 (Iron and steel castings)
UNSPSC Code 31101617(Grey iron sand casting)
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ASTM A159-83(2020), Standard Specification for Automotive Gray Iron Castings, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top