DIN EN ISO 19598 2017-04 PDF

Full title and description

STB DIN EN ISO 19598 2017-04 — Metallic coatings: electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment. This document is the German (DIN) adoption of the EN/ISO international standard that defines designation, minimum coating thickness and corrosion-resistance requirements, and Cr(VI)-free passivation/post-treatment symbols for electroplated zinc and common zinc-alloy coatings (notably Zn–Ni and Zn–Fe) used to protect iron and steel components.

Abstract

This standard specifies a uniform system of designation and minimum performance requirements for electrodeposited zinc and zinc-alloy coatings on iron or steel where the coatings receive supplementary hexavalent-chromium-free (Cr(VI)-free) passivation or post-treatment. It covers composition classes (pure zinc, zinc–nickel, zinc–iron), nominal/local thickness notation, passivation and sealing/top-coat designations, and minimum corrosion resistance in standard test procedures. The standard is intended to harmonize how suppliers, processors and users specify and test electroplated zinc-based coatings for corrosion protection.

General information

• Status: Published / Current national adoption (DIN EN ISO).
• Publication date: DIN adoption published April 2017 (original ISO issue: 3 November 2016).
• Publisher: Deutsches Institut für Normung (DIN) — adoption of EN/ISO standard; originally published by ISO (ISO/TC 107).
• ICS / categories: 25.220.40 (Metallic coatings).
• Edition / version: DIN EN ISO 19598:2017-04 (adoption of ISO 19598:2016/EN ISO 19598).
• Number of pages: 22 (DIN adoption document).

Scope

The standard applies to electrodeposited zinc and zinc-alloy coatings on iron or steel that are finished with Cr(VI)-free passivation or subsequent sealing/topcoat treatments. It covers zinc coatings and zinc-alloy coatings containing nickel (Zn–Ni) or iron (Zn–Fe) as the principal alloying elements, provides the standardized designation format for coating systems, and specifies minimum coating thicknesses and minimum corrosion-resistance requirements to be achieved in defined test procedures. It is intended for use with components such as fasteners, stamped and formed parts, and other steel parts where electroplated zinc-type systems are specified.

Key topics and requirements

• Standardized coating designation format recording base material, coating type, nominal/local thickness and passivation/post-treatment codes (e.g., symbols used to denote Zn, ZnNi, ZnFe, passivation types and T‑codes for seal/topcoat).
• Definition of coating types and composition ranges (typical Zn–Ni and Zn–Fe alloy designations and their alloying-element ranges used for classification).
• Minimum nominal and local coating thickness categories and how thickness is to be expressed on specification sheets.
• Minimum corrosion-resistance requirements in commonly used test procedures (e.g., neutral salt spray and other agreed tests) and how passivation/ sealing affects test classifications.
• Designation and colour codes for Cr(VI)-free passivation types (transparent/iridescent/black) and rules for sealing/topcoat notation (T0, T2, etc.).
• References to relevant test and measurement standards for coating thickness, salt-spray testing and electroplating practice (standards commonly used alongside ISO 19598).

Typical use and users

Used by plating houses, fastener manufacturers, OEMs (automotive, electronics, construction and general industry), procurement/specification engineers, quality and testing laboratories, and corrosion-protection engineers. Typical applications include threaded fasteners, stamped and formed components, and other steel parts requiring defined electroplated zinc or zinc-alloy systems with Cr(VI)-free passivation for corrosion protection and functional surface properties.

Related standards

Commonly referenced and used alongside: ISO 4042 (designation and general guidance for electroplated coatings on fasteners), ISO 2081 (zinc coatings — designation, general requirements), ISO 15726 (zinc alloy coatings), ISO 9227 (salt spray testing / NSS), and regional or industry specifications for fasteners (e.g., ASTM F1941 / ASTM B633 and various OEM standards). DIN 50979 is replaced by this adoption.

Keywords

zinc plating, zinc–nickel, zinc–iron, electroplated coatings, Cr(VI)-free passivation, corrosion resistance, coating thickness, fasteners, designation, electroplating, DIN EN ISO 19598

FAQ

Q: What is this standard?

A: It is the DIN (German) adoption of EN/ISO 19598 (published as DIN EN ISO 19598 in April 2017), titled "Metallic coatings — Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment." The international origin is ISO 19598:2016.

Q: What does it cover?

A: It defines how electrodeposited zinc and zinc-alloy coatings (including Zn–Ni and Zn–Fe types) finished with Cr(VI)-free passivation are to be designated, specifies minimum coating thickness classes and lays down minimum corrosion-resistance expectations for commonly used tests. It also gives the symbolic codes used to record passivation and sealing/topcoat treatments.

Q: Who typically uses it?

A: Plating suppliers, fastener and component manufacturers, OEM procurement/specification teams, testing laboratories and corrosion engineers who need a harmonized way to specify, test and verify Cr(VI)-free electroplated zinc-based protective coatings.

Q: Is it current or superseded?

A: The DIN adoption was published in April 2017 and is the currently published version of the EN/ISO document deriving from ISO 19598:2016. Users should check national standards bodies or official standards distributors for any later amendments or revisions beyond the 2017 adoption.

Q: Is it part of a series?

A: It is part of the family of standards on metallic and electroplated coatings (ISO/TC 107 work), and is intended to be used together with related standards such as ISO 4042, ISO 2081, ISO 15726 and test-method standards (e.g., ISO 9227 for salt-spray testing).

Q: What are the key keywords?

A: Zinc plating, Zn–Ni, Zn–Fe, electroplated coatings, Cr(VI)-free passivation, coating thickness, corrosion resistance, fasteners, designation.