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  • ASTM
    A291/A291M-19(2025) Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears
    Edition: 2025
    $144.00
    Unlimited Users per year

Description of ASTM-A291/A291M 2025

ASTM A291/A291M-19-Reapproved2025

Active Standard: Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears




ASTM A291/A291M

Scope

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 grades of steel are covered as follows:

1.2.1 Grade 1, Class A,  is normalized and tempered carbon steel.

1.2.2 Grade 2, Class B, Grade 3, Class C, Grade 3A, Class D, Grades 4 to 7, Classes E, F, G, and H, Grade 8, Class I, and Grade 9, Class J,  are liquid quenched and tempered alloy steel.

1.3 All grades and 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 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.

1.5 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.

1.6 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.


Keywords

alloy steel forgings; carbon steel forgings; gear forgings; gear shaft forgings; heat-treated; pinion forgings;


ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)


DOI: 10.1520/A0291_A0291M-19R25



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