SurTec 650V ChromitAL TCP

Product Code

0036501

Product Description

SurTec 650 chromitAL® is a chromium(VI)-free trivalent passivation for aluminium. The liquid concentrate delivers an excellent corrosion protection, comparable with the corrosion protection of a hexavalent passivation.

SurTec 650 chromitAL® is suitable for alloyed and casted aluminium and pretreatment before laquering, powder coating and gluing. It is easy to handle in immersion, spray and wipe application and produces an iridescent, faintly blue to tan and visible layer.

SurTec 650 chromitAL® meets or exceeds MIL-DTL-81706 and MIL 5541 for bare corrosion (336 h in NSS per ASTM B-117, respectively, DIN 50021 SS) and has a low contact resistance (< 0.8 mOhm/cm2). It is also heat resistant up to 100 °C (212 °F) with minimal loss in corrosion resistance.

Performance Features

  • hexavalent chromium free passivation for aluminium
  • based on trivalent chromium
  • liquid concentrate
  • produces colourful and visible layers which are blue-grey to yellow iridescent
  • excellent bare corrosion protection comparable to hexavalent passivations
  • also works on alloyed and casted aluminium
  • easy to handle in immersion and spray application

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