Logo

ASTM A291/A291M-19

Current Revision

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

$69.00

$69.00

$124.20

$83.00

$83.00

$149.40



Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


Stay effortlessly up-to-date with the latest standard revisions. When new versions are released, they're automatically charged and delivered to you, ensuring seamless compliance.

Document Preview Not Available...

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.


This specification covers normalized and tempered carbon steel, and liquid quenched and tempered alloy steel forgings for pinions, gears, and shafts for reduction gears. Prior to heat treatment for mechanical properties testing , steel materials may undergo machining and boring, after which specimens shall be stress relieved. Tensile, impact and Brinell hardness tests shall be performed wherein forgings shall conform to the following mechanical properties: tensile strength, yield strength, elongation, reduction of area, Charpy V-notch, and Brinell hardness. Specimens shall also conform to chemical requirements for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, copper, and aluminum.


SDO ASTM: ASTM International
Document Number A291
Publication Date Nov. 1, 2019
Language en - English
Page Count 5
Revision Level 19
Supercedes
Committee A01.06
Publish Date Document Id Type View
Nov. 1, 2019 A0291_A0291M-19 Revision
Nov. 1, 2018 A0291_A0291M-18A Revision
June 1, 2018 A0291_A0291M-18 Revision
Nov. 1, 2017 A0291_A0291M-17 Revision
Dec. 1, 2016 A0291_A0291M-16A Revision
May 1, 2016 A0291_A0291M-16 Revision
Sept. 1, 2005 A0291_A0291M-05 Revision
June 1, 2015 A0291_A0291M-05R15 Reaffirmation
April 1, 2010 A0291_A0291M-05R10 Reaffirmation