Five hundred pieces of customer hardware were barrel plated and chromated in Saporito Finishings high-corrosion resistant chromate. Two sample sets were submitted for zinc trivalent salt spray testing based on ASTM B117-95, 5% neutral Salt Spray Test.
Following barrel plating on all 500 parts, 50 pieces were subjected to a subsequent treatment in a chromate sealer that enhances the corrosion resistance of the chromate.
Two sets were prepared:
1) Five customer parts processed through the barrel process and trivalent chromate.
2) Five blanks taken from the processed parts and sealed
The parts were placed in the salt spray chamber / cabinet, supported by polypropylene rods and cable ties
A set of the as plated and zinc Trivalent chromated parts were tested along with parts, which were zinc Trivalent chromated and sealed. Both sets met the 240-hour salt spray requirement; however, the Zinc Trivalent sealed parts performed better.
To receive more details about the benefits of zinc trivalent chromate sealer, please call 708-222-5317, or send us an e-mail , or submit the quick and easy form on the Contact Us page.