DIN Standards Committee Aerospace
DIN EN 4729
Aerospace series - Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys; German and English version EN 4729:2017
Luft- und Raumfahrt - Chrom-(III)-basierte chemische Konversionsüberzüge für Aluminium und Aluminiumlegierungen; Deutsche und Englische Fassung EN 4729:2017
Overview
This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys. It covers the application by bath but also by touch-up. It doesn't give complete in-house process instructions; these shall be given in the manufacturers detailed process instructions. The EN 4729 standard has been prepared by the standardization organization ASD-STAN of the AeroSpace and Defence Industries Association of Europe (ASD) with the participation of German experts at DIN Standards Committee Aerospace (NL). The responsible German standardization committee is Working Committee NA 131-02-05 AA "Metallische Werkstoffe" ("Metallic Materials") at DIN Standards Committee Aerospace (NL).
Responsible national committee
NA 131-02-05 AA - Metallic Materials
