Skip to content

SurTec 650

SurTec 650

Trivalent Chromium Conversion Coating

SurTec 650 is a trivalent Chromium passivation treatment for Aluminium and Magnesium, which increases corrosion resistance and paint adhesion. It is hexavalent Chromium free.

  • SurTec 650 forms a colourless to iridescent blue/green protective coating.
  • It is REACH, RoHS and WEEE compliant.
  • It has a low electric resistance.
  • Excellent pretreatment for powder coating or conventional paint.
  • SurTec 650 can be applied by dipping or by spray.
  • Can be used with or without topcoating with paint.
  • Meets MIL-DTL-81706B and MIL-DTL-5541F.
  • SurTec 650 is a drop-in replacement for hexavalent chromium passivation.


Download a Technical Data Sheet for SurTec 650 here.

For a Safety Data Sheet, or to buy SurTec 650 in the UK, please contact us.

Back to Pretreatment.

SurTec logo
Powder coating of metal parts. A woman in a protective suit sprays powder paint from a gun on metal products
Metallic pieces galvanized on zinc bath