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ASTM A739-90a(2022)

Current Reaffirmation

Standard Specification for Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or Both

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1.1 This specification2 covers hot-wrought, ferritic alloy steel bars for elevated temperature or pressure-containing parts suitable for fusion welding or both.

1.2 The bars are furnished in the following grades:

Grade B 11: 1.25 % chromium, 0.55 % molybdenum

Grade B 22: 2.25 % chromium, 1.00 % molybdenum

1.3 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.

1.4 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 hot-wrought, ferritic alloy steel bars for elevated temperature or pressure-containing parts suitable for fusion welding or both. The bars are furnished in two grades: Grade B 11 and Grade B 22. The steel shall be made by on or more of the following primary processes: open-hearth, basic-oxygen, or electric furnace. The bars shall be normalized and tempered. The heat analysis shall conform to the limits for chemical composition specified. The bars as represented by the test specimen shall conform to the tensile requirements specified.


SDO ASTM: ASTM International
Document Number A739
Publication Date March 1, 2022
Language en - English
Page Count 2
Revision Level 90a(2022)
Supercedes
Committee A01.15
Publish Date Document Id Type View
March 1, 2022 A0739-90AR22 Reaffirmation
Sept. 1, 2016 A0739-90AR16 Reaffirmation
March 1, 2012 A0739-90AR12 Reaffirmation
March 1, 2006 A0739-90AR06 Reaffirmation
Jan. 1, 2000 A0739-90AR00 Reaffirmation