This document specifies methods for the determination of
â the presence of colourless chromate conversion coatings,
â 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,
â the total chromium content per unit area on zinc and cadmium,
â the mass per unit area of both colourless and coloured coatings,
â the satisfactory adhesion of chromate conversion coatings, and
â the quality of chromate coatings.
These methods are applicable to
â colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and
â chromate coatings that are free from any supplementary coatings, such as oil, water or solvent-based polymers or wax.
| SDO | ISO: International Organization for Standardization | 
| Document Number | ISO 3613 | 
| Publication Date | Not Available | 
| Language | en - English | 
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | ISO/TC 107 |