chromitAL TCP

Trivalent Chrome Passivation for Aluminium

SurTec 650 chromitAL provides excellent bare corrosion resistance on unpainted surfaces and enhances adhesion of organic coatings. Applications include plain and anodized aluminium.

drop-in replacement for conventional hexavalent chrome passivation environmentally safe, non-toxic, simple to operate and waste treat meets or exceeds MIL-DTL-81706B and MILDTL-5541F for bare corrosion (336 h in NSS per ASTM B-117) respectively, DIN EN ISO 9227 temper resistant up to 100 °C low contact resistance, meets electrical conductivity requirements on aluminium substrates per MIL-DTL-81706B field tested on alloys 2024, 2219, 5083, 7075 and various castings applied by immersion, spray or wipe-on for large areas finishing