Chromate Chemical Conversion

Chromate conversion is a chemical film treatment primarily used as a pre coating or finish for corrosion resistance. 

Chemical conversion for aluminium is carried out as per MIL-DTL 5541F.

​

Type 1 - Yellow:    Contains hexavalent chromium

​

Type 2 - Clear:      ROHS compliant, containing no hexavalent chromium.

​

Class 1A - For maximum protection against corrosion, painted or unpainted.

Class 3 - For protection against corrosion where low electrical resistance is required.

​

​