GEOMET® (http://www.geomet.net) is a coating made with an aqueous base and is composed of zinc and aluminium flakes in an inorganic binder.
GEOMET® is chromium free (no hexavalent chromium nor trivalent chromium) and environment friendly. GEOMET® performances linked to corrosion protection and lubrication are particularly high.
GEOMET is a sacrificial coating that ensures the protection of metallic surfaces thanks to:
Barrier protection - Overlapping zinc and aluminium flakes provide an excellent barrier between the steel substrate and the corrosive atmosphere.
Galvanic action - Zinc corrodes to protect the steel.
Passivation - Metal oxides slow down the corrosion reaction of zinc and steel to provide a greater corrosion protection than with pure zinc.
RUB USE GEOMET® 321
GEOMET® 321 is a non-electrolytically applied thin-film coating of metallic grey colour for the corrosion protection of parts made from steel, cast iron, or other iron metals. GEOMET® 321 is composed of zinc and aluminium flakes in an inorganic binder; it has been developed by DACRAL S.A and is a chromium-free product. The GEOMET® 321 coating is obtained by the application of an aqueous dispersion by cold immersion or spray and is therefore free of any risk of hydrogen embrittlement.
CHARACTERISTICS GEOMET® 321 / Grade A
GEOMET® 321 may be used in all industrial areas for the protection of ferrous metals by appropriately selected application techniques. It is especially suited to fasteners. In the automotive and truck industry, OEM specifications must be respected. In industries with no specific standard, the BS EN ISO 10683 and EN 13858 can be used. The standards describe requirements for zinc-flake coatings. Related information can be found on the website www.dacral.com.