Zn-Ni black (Zn-Ni black cor)
Black passivated Zn/Ni for rack goods - the Cr(VI)-free alternative to proven transparent passivation.
Advantages:
- complies with all general automobile shipping instructions, even without sealing; hence particularly suitable for construction components with sealing surfaces
- suitable as an option for identical parts
- e.g. L black, R transparent
- reliable corrosion resistance of 240 h WR, 720 h RR
- no contact corrosion with aluminium
- naturally Cr(VI)-free
Status for chrome (VI)-free surfaces in the Holzapfel Group