SurTec 650 RTU chromitAL TCP - RTU
Ready-to-Use Solution
Properties
- Free of hexavalent chromium.
- Trivalent chromium passivation for aluminium.
- Ready-to-use solution for spray and wipe application.
- Viscous adjusted solution for better and longer moistening.
- Excellent bare corrosion protection, comparable to hexavalent passivations.
- Very suitable as pre-treatment before lacquering, powder coating and gluing.
- Produces visible, faintly blue to tan iridescent layers.
- Meets or exceeds MIL-DTL-81706 and MIL 5541 for bare corrosion. (336 h in NSS per ASTM B-117, respectively, DIN 50021 SS)
- Low contact resistance: < 5000 μOhm per square inch as per MIL-DTL-81706B.
- Heat resistant up to 100°C with minimal loss in corrosion resistance.
Application
SurTec 650 RTU Ready-to-Use Solution is used undiluted for spray or wipe application.
- Make-up-value: 100 %.
- Temperature: room temperature.
- pH-value: 3.8 (the ready-to-use solution is adjusted accordingly)
- Application time: 2 min (1-10 min)
- Spray pressure: 1 bar (0.5-1.5 bar)
- Tank material: stainless steel, or steel with acid- and fluoride-resistant coating.
- Heating/cooling: not necessary.
- Exhaust: according to local requirements.
- Hints: During storage, a slight precipitation may occur, which does not impair the quality and the function of the product.
- Surfaces treated with SurTec 650 RTU can be coated immediately after drying or stored as long as they are protected from contamination and temperature extremes. For optimum results, the parts should be coated within 7 days.
Note: The Alocrom 1200 is no longer available due to REACH regulations.
