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topic 60766

Trivalent chromate on steel


May 22, 2018

Q. Sir we are going to test SST for Trivalent Chromate 8-20 microns, our bare metal is steel, we manufacture parts of weighing scale. I would like to know the standard criteria of SST, is 24 hrs, 48 hrs, 72 hours.

Thank you.

virgs of Philippines

virgs laroza
- batangas city, Philippines


May 2018

A. Hi Virgs. I am not sure if I am misunderstanding you, or you are misunderstanding something, but trivalent chromate coatings are not used directly on steel. They are used on aluminum and on certain electroplatings such as zinc plating. Please clarify the situation. Thanks.

Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey
Striving to live "Aloha"



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