Chromate conversion coating is a type of conversion coating used to passivate aluminum, zinc, cadmium, copper, silver, magnesium, and tin alloys. It is primarily used as a corrosion inhibitor, primer, decorative finish, or to retain electrical conductivity.
Types :

we have two types of chromate conversion coating with respect to the chromium.

Hexavalent chromium conductive coating Cr6 also termed as iridite or alodine

Specifications :

Hexavalent is available two colours golden yellow and clear(transparent) 

Complaiance to standards :

Our Chromate conversion coating complaince to various plating standards

	MIL DTL 5541
	IS 11232
	PS 252

Trivalent Chromium Passivation (TCP-PROCESS) As Per MIL-C-5541 CLASS 3 :
Chemical conversion coatings are intended as a corrosion preventive film from electrical and electronic applications where low resistance contacts are required.
T.C.P. PROCESS (SURTEC 650) RoHS, WEEE. COMPLIANCE : 
Hexavalent chromium free Passivation for aluminum, magnesium & casted aluminum alloys. suitable as post-treatment of anodic coatings (Anodizing)  and conversion coating of magnesium alloys, excellent bare corrosion protection comparable to hexavalent passivation. It produces an iridescent, faintly blue to tan and