SurTec 650 & 650V are hexavalent free chromate conversion coatings that are mainly used as a pre-paint coating for aluminum or as a corrosion resistant finish that still allows parts to be electrically conductive. SurTec 650 is a colourless finish that leaves parts with a silver appearance SurTec 650V is a coloured finish that leaves parts with an iridescent slightly blue colour to create a visible coating.

We typically apply this finish to spec MIL-DTL-5541 Type 2 Class 1A or Class 3

SurTec 650 / 650V is ROHS compliant

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