Anodisation and Surface treatments
Anodizing
MIL-A-8625 is the military specification titled Anodic Coatings for Aluminium and Aluminium Alloys. MIL-A-8625 is approved for use by all Departments and Agencies of the Department of Defence. MIL-A-8625, Type II, Class 1 Sulphuric acid anodizing, conventional coatings produced from a sulphuric acid bath, Non-dyed MIL-A-8625, Type II, Class 2 Sulphuric acid anodizing, conventional coatings produced from a sulphuric acid bath, Dyed MIL-A-8625, Type III, Class 1 Hard Anodic Coatings, Non-dyed MIL-A-8625, Type III, Class 2 Hard Anodic Coatings, Dyed The chemical conversion coating types : MIL-DTL-5541F (MIL-C-5541E), TYPE 1,Class 1A* MIL-DTL-5541F (MIL-C-5541E), TYPE 1,Class 3 ** MIL-DTL-5541F (MIL-C-5541E), TYPE 2,Class 1A (ROHS) MIL-DTL-5541F (MIL-C-5541E), TYPE 2,Class 3 (ROHS) Clear Chromate per ASTM B449-93, Class III * Class 1A : for maximum protection against corrosion, for surfaces to be painted or left unpainted ** Class 3 : for protection against corrosion where low electrical resistance is required |