Metallic and other inorganic coatings - Pretreatment of iron or steel to reduce the risk of hydrogen embrittlement
1 Scope
This standard establishes stress-relief requirements for high strength steels, in order to reduce their susceptibility or degree of susceptibility to hydrogen embrittlement in subsequent pretreatment, electroplating, autocatalytic plating, chemical conversion and phosphating processes. This standard is applicable to steels of which the properties are not adversely affected by heat treatment at 190°C to 230°C or higher (see 6.2).
The heat treatment procedures established in this standard have been shown to be effective in reducing the susceptibility of steel having tensile strengths equal to or greater than 1000 MPa and 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 and other chemical coating operations.
This standard does not apply to fasteners.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2080 Metallic and other inorganic coatings—Surface treatment, metallic and other inorganic coatings—Vocabulary
ISO 12686 Metallic and other inorganic coatings—Automated controlled shot-peening of metallic articles prior to nickel, autocatalytic nickel or chromium plating, or as a final finish
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2080 and the following apply.
Foreword I
Introduction II
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Categorization of steels
6 Stress relief
Annex NA (Informative)
