Chem Film

     
Chem Film  Mil-DTL-5541  
      
Type 1 - hexavalent chrome (Irridite, Alodine)
Class 1A - heavy (gold)- maximum corrosion protection
Class 3 - light (gold to clear)- corrosion protection/ low electrical resistance

Type 2 - trivalent chrome (rhos compliant)
Class 1A - heavy (clear)- maximum corrosion protection
Class 3 -light (clear)- corrosion protection/ low electrical resistance