Trivalent chromating is another method of industrial immersion process that is considered as environmentally friendly alternative to hexavalent chromium.
AL 1590 TCP
TRIVALENT CHROMATE CONVERSION COATING ON ALUMINIUM AND
ALUMINIUM ALLOYS
Physical Properties: AL 1590 TCP: Liquid
Description
AL 1590 TCP is a liquid trivalent chrome passivation for aluminium and aluminium alloys. It produces iridescent to visible layer.
AL 1590 TCP can be used either in spray or immersion applications.
AL 1590 TCP has excellent bare corrosion protection comparable to hexavalent passivation. SST result on wrought Aluminium 800 ~ 1000 hours and for casting Aluminium 200 ~ 300 hours.
AL 1590 TCP is also suitable for spray paint or powder coating applications.