ASTM A739-90a(2022)

Standard Specification for Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or Both (Includes all amendments and changes 3/7/2022).

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STANDARD published on 1.3.2022

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The information about the standard:

Designation standards: ASTM A739-90a(2022)
Publication date standards: 1.3.2022
SKU: NS-1050974
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Steels for pressure purposes

Annotation of standard text ASTM A739-90a(2022) :

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.

Keywords:

alloy steel bars, high-temperature applications, hot-wrought steel bars, pressure-containing parts, steel bars, temperature service application—high,, ICS Number Code 77.140.30 (Steels for pressure purposes)

Additional information

1. Scope

1.1?This specification1.2?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.

2. Referenced Documents

A29/A29M-23	Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products

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