Untitled Document

 

Zinc

Yellow and olive drab hexvalent chromates not ROHS compliant.
All other chromates are ROHS compliant.

Rack or Barrel

Specification:  ASTM B633

  
Type I
As plated
Type II
Coloured chromate 96 hrs
Type III
Colorless chromate ROHS 12 hrs
Type IV
Phosphate
Type V
Colorless passivate ROHS 72 hrs
Type VIColoured passivate ROHS 120 hrs
SC4
Very severe 0.0010" (Fe/Zn 25)
SC3
Severe 0.0005" (Fe/Zn 12)
SC2
Moderate 0.0003" (Fe/Zn 8)
SC1Mild 0.0002" (Fe/Zn 5)
 

Specification:  QQ-Z-325C

  
Type I
As plated
Type II
Coloured chromate
Type III
Phosphate
Class 1
0.0010"
Class 2
0.0005"
Class 3
0.0002"

Specification:  PPS 6.2.18

  
 
Trivalent Yellow ROHS .0005” min