ASTM B849 - 02(2013) - Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement

ASTM B849 - 02(2013)

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

Status : Current   Published : January 2013

Format
PDF

Format
HARDCOPY



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 11 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.




Standard NumberASTM B849 - 02(2013)
TitleStandard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement
StatusCurrent
Publication Date05 January 2013
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Delayed brittle failure, Heat treatment, Hydrogen embrittlement, Hydrogen induced cracking, Hydrogen stress cracking, Pre-treatments of iron or steel, Stress relief
ICS25.220.10
77.080.01
PublisherASTM
FormatA4
DeliveryYes
Pages3
File Size62 KB
Price£36.00


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