EN 2101:1991

Foreword
1 Scope and field of application
2 Purpose of anodizing
3 References
4 Material categories
5 Supporting jig
6 Processing sequence
7 Quality assurance
8 Designation
Annex A - Surface preparation recommendations
Annex B - Inspection of the absorbing ability by
          anthraquinone violet drop test
Annex C - Inspection of corrosion resistance by repeated
          immersion test in salt solution

This standard specifies the required characteristics for the performance of chromic acid anodizing with or without sealing as well as quality assurance of the coating obtained. It applies to parts in aluminium and wrought aluminium alloys of categroy 1 and 2 (see clause 4) used in aerospace construction when reference is made to this standard.