Chromatings (based on hexavalent chromium) protect zinc and zinc alloy coatings and thus improve the corrosion resistance of the coating systems. Different shades of colour (black, yellow, olive) are available for colour coding of the coated parts.
cathodic corrosion protection (CRC).
Black chromating two-step process for zinc-iron alloys. Liquid product.
Black chromating process for zinc and zinc-iron coatings. Liquid product.
Black chromating process for zinc coatings from acid and alkaline electrolytes. May also be applied as olive chromating. Solid product.
METAPAS F yellow CA is intended to yellow chromating of electro deposited zinc coatings. Barrel- and rack parts can both be chromated very well.
METAPAS F black CA is intended to black chromating of electro deposited zinc coatings and forms deep black and uniform surfaces. In dry condition these are resistant to abrasion and bending.
METAPAS 131 CA forms a dark olive chromate film on zinc- cadmium- as well as on cadmium alloycoatings, which are mainly deposited from alkaline electrolytes.
METAPAS olive CA forms dark-, olive freen chromate films and can be used forrack- as well as for barrel parts.
METAPAS C black CA forms deep black chromate films, regardless if the zinc layers have been deposited from acidic, alkaline cyanide-free or cyanidic electrolytes.