Zinc-nickel black (blackcor)

Zinc-nickel blackcor has all the advantatges of a zinc-nickel surface - Cr(VI) free black passivated

Black zinc-nickel plating

Black passivated Zn/Ni - the Cr(VI)-free alternative to proven transparent passivation.
Blackcor complies with all general automobile shipping instructions, even without sealing; hence it is particularly suitable for construction components with sealing surfaces or threads. The basic materials are steels, cast iron and powdered metals.
Zinc-nickel blackcor can be used to black-passivate barrel-plated goods Cr-VI-free.

Advantages
Fields of application
Contacts

Reliable corrosion resistance of 240 h WR, 720 h RR
Even layer thickness distribution
Temperature stress 24 hrs. at 120°C without loss of corrosion resistance
No contact corrosion with aluminium
Can be used to differentiate same parts, i.e. l=black, r=transparent

Automotive and supplier industry (e. g. in attachment and pipe systems, in the engine compartment, in brake and magnetic systems, in locks and in the chassis area)
Building machinery industry
Mechanical engineering