ASTM-B849 › Historical Revision Information
Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement
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This specification covers the pre-treatment procedures of iron or steel for reducing the susceptibility or degree thereof to hydrogen embrittlement or degradation that may arise in electroplating, autocatalytic plating, porcelain enameling, chemical conversion coating, and phosphating.
Scope
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.
Keywords
delayed brittle failure; heat treatment; hydrogen embrittlement; hydrogen induced cracking; hydrogen stress cracking; pre-treatments of iron or steel; stress relief; ICS Number Code 77.080.01 (Ferrous metals in general)
To find similar documents by ASTM Volume:
02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)
To find similar documents by classification:
77.080.01 (Ferrous metals in general)
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Document Number
ASTM-B849-02(2007)
Revision Level
2002 R07 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
May 1, 2007
Document Type
Specification
Page Count
3 pages
Committee Number
B08.02