ASTM-B850 Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement

ASTM-B850 - 1998 R15 EDITION - CURRENT
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This guide covers the standard procedure of performing post-coating heat treatment of some steels for reducing susceptibility to hydrogen embrittlement or degradation that may arise in the finishing processes. This heat treatment procedure shall be used after plating operations but prior to any secondary conversion coating operation. Except for surface-hardened and shot-peened parts, the choice of embrittlement-relief heat treatment and the corresponding treatment conditions shall be selected on the basis of actual tensile strength of the steel.

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Scope

1.1 This guide covers procedures for reducing the susceptibility in some steels to hydrogen embrittlement or degradation that may arise in the finishing processes.

1.2 The heat treatment procedures established herein may be effective for reducing susceptibility to hydrogen embrittlement. This heat-treatment procedure shall be used after plating operations but prior to any secondary conversion coating operation.

1.3 This guide has been coordinated with ISO/DIS 9588 and is technically equivalent.

Note 1: The heat treatment does not guarantee complete freedom from the adverse effects of hydrogen degradation.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

delayed brittle failure; heat treatment; hydrogen embrittlement; hydrogen embrittlement relief; hydrogen induced cracking; hydrogen stress cracking; post-treatments of steel ;; 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-B850-98(2015)

Revision Level

1998 R15 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Jan. 15, 2015

Document Type

Guide

Page Count

3 pages

Committee Number

B08.02