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1.1 This specification covers normalized and tempered carbon steel and quenched and tempered alloy steel forgings for pinions, gears, and shafts.
1.2 Several classes of steel are covered as follows:
1.2.1 Class 1 is normalized and tempered carbon steel.
1.2.2 Classes 2 to 9 , incl, are liquid quenched and tempered alloy steel.
1.3 All classes are considered weldable under proper conditions. Welding technique is of fundamental importance and it is presupposed that welding procedure and inspection shall be in accordance with approved methods for the class of material used.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
ICS Number Code 77.140.85 (Iron and steel forgings)
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ASTM A291-95(1999), Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears, ASTM International, West Conshohocken, PA, 1999, www.astm.orgBack to Top