ISO 19598:2016
Metallic coatings — Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment
ISO 19598:2016 applies to electrodeposited zinc and zinc-alloy coatings on iron and steel with Cr(VI)-free passivation. The zinc-alloy coatings contain nickel or iron as alloying elements (referred to as zinc/nickel and zinc/iron coatings, respectively).
The main purpose of the coatings or coating systems is protecting iron and steel components against corrosion.
ISO 19598:2016 specifies
- the designations to be used for the above coating systems,
- the minimum corrosion resistance to be achieved in specified test procedures, and
- the minimum coating thicknesses required.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
4.1 Electrodeposited coatings
4.2 Passivation
4.3 Post treatment
4.4 Significant (functional) surfaces
4.5 Examples of designations
5 Information to be supplied by the purchaser to the electroplater
6 Basis materials
7 Coating and processing
7.1 Surface preparation and deposition of zinc or zinc-alloy coating
7.2 Supplementary treatments
7.2.1 Passivation layers
7.2.2 Post treatment
7.3 Barrel-/rack-plating (handling of parts)
7.3.1 Barrel electroplating
7.3.2 Rack electroplating
7.4 Hydrogen embrittlement
7.4.1 Basic factors
7.4.2 Choice of procedure
8 Requirements to be met by coatings and test methods
8.1 Thickness
8.2 Adhesion
8.3 Absence of Cr(VI)
8.4 Accelerated corrosion testing
8.4.1 General
8.4.2 Minimum corrosion resistance of passivated zinc and zinc-alloy coatings
9 Test report
9.1 General information
9.2 Coatings on materials having a tensile strength ≥1 000 N/mm2
9.3 Test results
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
4.1 Electrodeposited coatings
4.2 Passivation
4.3 Post treatment
4.4 Significant (functional) surfaces
4.5 Examples of designations
5 Information to be supplied by the purchaser to the electroplater
6 Basis materials
7 Coating and processing
7.1 Surface preparation and deposition of zinc or zinc-alloy coating
7.2 Supplementary treatments
7.2.1 Passivation layers
7.2.2 Post treatment
7.3 Barrel-/rack-plating (handling of parts)
7.3.1 Barrel electroplating
7.3.2 Rack electroplating
7.4 Hydrogen embrittlement
7.4.1 Basic factors
7.4.2 Choice of procedure
8 Requirements to be met by coatings and test methods
8.1 Thickness
8.2 Adhesion
8.3 Absence of Cr(VI)
8.4 Accelerated corrosion testing
8.4.1 General
8.4.2 Minimum corrosion resistance of passivated zinc and zinc-alloy coatings
9 Test report
9.1 General information
9.2 Coatings on materials having a tensile strength ≥1 000 N/mm2
9.3 Test results
Bibliography