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ASTM B849-02

Current Revision

Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement

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1.1 This specification covers procedures for reducing the susceptibility or degree of susceptibility to hydrogen embrittlement or degradation that may arise in electroplating, autocatalytic plating, porcelain enameling, chemical conversion coating, and phosphating and the associated pretreatment processes. This specification is applicable to those steels whose properties are not affected adversely by baking at 190 to 230°C or higher (see 6.1.1).

1.2 The heat treatment procedures established herein have been shown to be effective for reducing the susceptibility of steel parts of tensile strength 1000 MPa or greater that have been machined, ground, cold-formed, or cold-straightened subsequent to heat treatment. This heat-treatment procedure is used prior to any operation capable of hydrogen charging the parts, such as the cleaning procedures prior to electroplating, autocatalytic plating, porcelain enameling, and other chemical coating operations.

Note 1—1 MPa = 145.1 psi.

1.3 This specification has been coordinated with ISO/DIS 9587 and is technically equivalent.

1.4 The values stated in SI units are to be regarded as the standard.


SDO ASTM: ASTM International
Document Number B849
Publication Date Dec. 10, 2002
Language en - English
Page Count 3
Revision Level 02
Supercedes
Committee B08.02
Publish Date Document Id Type View
Dec. 10, 2002 B0849-02 Revision
Jan. 1, 1994 B0849-94 Revision
Nov. 1, 2023 B0849-02R23 Reaffirmation
April 1, 2019 B0849-02R19 Reaffirmation
May 1, 2013 B0849-02R13 Reaffirmation
June 1, 2007 B0849-02R07 Reaffirmation