Standard

NS-EN ISO 3613:2021

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Abstract

This document specifies methods for the determination of —    the presence of colourless chromate conversion coatings, —    the presence of hexavalent chromium in colourless and coloured coatings on zinc or cadmium or aluminium-zinc (mass fraction of aluminium: 55 %, within a range of 54 % to 56 % mass fraction) and zinc-aluminium (mass fraction of aluminium: 5 %) alloys, —    the total chromium content per unit area on zinc and cadmium, —    the mass per unit area of both colourless and coloured coatings, —    the satisfactory adhesion of chromate conversion coatings, and —    the quality of chromate coatings. These methods are applicable to —    colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and —    chromate coatings that are free from any supplementary coatings, such as oil, water or solvent-based polymers or wax.

Document information

  • Standard from SN
  • Published:
  • Edition: 2021-05
  • Version: 1
  • Document type: NAT
  • ICS 25.220.20
  • National Committee SN/K 51

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