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Chem Film

known as Iridite and allodine

Clear: ROHS Compliant
Yellow: Not ROHS Compliant

Specification:  MIL-DTL-5541F and MIL-DTL-81706

  
Class 1A
Max corrosion protect
Class 3
Low electrical resistance
Type 1
Hexavalent (yellow)
Type 2
Trivalent (clear)

Specification:  PPS 6.2.1

  
Type 2
Trivalent (clear)
Class 1A
Max corrosion protect

Specification:  ASTM B449

  
Class 1
Max corrosion protect (yellow)
Class 2
Paint base; bond to rubber (clear)
Class 3
Decorative; Low elec. Resist (clear)