PREN 4729-2015
Aerospace series Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys (Edition P 1)

Standard No.

PREN 4729-2015

Release Date

2015

Published By

ASD-STAN - Aerospace and Defence Industries Association of Europe - Standardization

Latest

PREN 4729-2015

Scope

This 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. Purpose of process The aim of the trivalent chromium based chemical conversion coatings is to increase corrosion resistance@ to improve the adhesion of paints and varnishes and to ensure electrical conductivity. Coatings are also suitable for the repair of mechanically damaged anodic coatings.

PREN 4729-2015 history

• 2015 PREN 4729-2015 Aerospace series Trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys (Edition P 1)