Blue Cobalt Free Trivalent Blue Passivate For Zinc
FINIDIP 137 CF is a high performance trivalent chromium passivate designed specifically for producing beautiful blue finishes on zinc.
After a simple immersion, FINIDIP 137 CF forms a bright, even film with a very uniform blue aspect. Its’ appearance is easy to modify by adjusting immersion time and operating conditions.
A FINIGARD product can be applied to control the coefficient of friction and/or to increase the corrosion resistance.
FINIDIP 137 CF is a very stable process and produces consistent passivation results. It is ideal for both rack and barrel applications and can be combined with iron inhibitors in order to extend bath life.
Features & Benefits
- Free of nickel, cobalt, and hexavalent chromium
- Uniform blue aspect
- Good corrosion protection
- Economical operation
- Low bath temperature (20-30°C)
- Ideal for both rack and barrel applications
Fields of application
- Self-tapping screws