SurTec 650

We offer SurTec 650 on a wide range of Aluminium alloys.


▪ chrome (VI) free passivation for aluminum

▪ suitable as finishing of anode coatings1)

▪ suitable as a conversion coating of magnesium1)

▪ liquid concentrate, based on trivalent chromium

▪ excellent rust protection comparable to hexavalent passivation

▪ Also works on alloy and cast aluminum

▪ easy to handle for immersion, spraying and wiping

▪ produces visible, pale blue to brown iridescent layers

▪ suitable as a pre-treatment before painting, powder coating and gluing

▪ approved by QUALICOAT

▪ meets all the requirements of ELV, RoHS and WEEE, if the following

the recommended process sequence 

▪ conforms to LN 9368-3 ID number 1108

▪ complies with DIN 50935-2, coating type A

▪ meets or exceeds MIL-DTL-81706B and MIL-DTL-5541F for pure corrosion

(336 hours in NSS according to ASTM B-117, respectively DIN EN ISO 9227)

▪ Low contact resistance: <5000 µOhm per square inch according to MIL-DTL-81706B

▪ heat-resistant inorganic passivation layer