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ASTM A436-24

Current Revision

Standard Specification for Austenitic Gray Iron Castings

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1.1 This specification covers austenitic gray iron castings that are used primarily for their resistance to heat, corrosion, and wear. Austenitic gray iron is characterized by uniformly distributed graphite flakes, some carbides, and the presence of sufficient alloy content to produce an austenitic structure.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 austenitic gray iron castings that are used primarily for their resistance to heat, corrosion, and wear. The types of castings covered here are: Type 1, Type 1b, Type 2, Type 2b, Type 3, Type 4, Type 5, and Type 6. The materials shall be manufactured by melting in any furnace that produces castings which includes cupolas, air furnaces, electric furnaces, crucible furnaces, and so forth. Heat and product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, silicon, manganese, nickel, copper, chromium, sulfur, and molybdenum. The materials shall undergo a nonmagnetic test which is based on the material's attraction to a small steel horseshoe-type magnet and a magnetic permeability test in the event that nonmagnetic castings are specified. Tension tests shall be performed wherein specimens shall conform to required tensile strength and Brinell hardness.


SDO ASTM: ASTM International
Document Number A436
Publication Date Oct. 1, 2024
Language en - English
Page Count 5
Revision Level 24
Supercedes
Committee A04.01
Publish Date Document Id Type View
Oct. 1, 2024 A0436-24 Revision
Jan. 27, 1984 A0436-84R97E01 Revision
May 1, 2020 A0436-84R20 Reaffirmation
Nov. 1, 2015 A0436-84R15 Reaffirmation
March 1, 2011 A0436-84R11 Reaffirmation
Oct. 1, 2006 A0436-84R06 Reaffirmation
Jan. 27, 1984 A0436-84R01 Reaffirmation