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topic 0193

Corrosion resistance of trivalent chrome plating vs. hexavalent chromium


I am looking for information along with opinions form other platers regarding the corrosion values of trivalent chrome versus hexavalent chrome. I am specifically interested in why the auto industry is not allowing trichrome on exterior parts, bumpers, etc.

Paul D. Peterson
- Rock Hill, South Carolina

You might inquire of the suppliers of tri-chrome to see what they have to say on the corrosion issue, Paul. Two of the major ones are Atotech and Macdermid. I don't think it's a matter of corrosion resistance, but not as good color.

Ted Mooney, Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


It's been awhile, but at last look, the finish just isn't there, hex leaves a blue bright finish, tri is not as brilliant (lustrous) finish

Ron Landrette
plating equipment supplier - Bristol, Connecticut

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