Zinc-iron

Brief technical description:

Zinc/iron coating is a galvanic coating method that, using an alkaline electrolyte, precipitates a zinc/iron alloy with a homogeneous iron incorporation rate ranging from 0.5% to 0.7% on a metallic component. This method results in a very even coating thickness and may be used for industrial and decorative surfaces. Steel, cast iron and sintered metals are the metals most usually coated. In comparison with traditional zinc surfaces, the corrosion protection is clearly improved, even when the coatings are thin. Cr(VI)-free passivation is possible after coating. Subsequent sealing results in a further improvement of the corrosion protection.
The Holzapfel Group coats zinc iron according to the following standards: VW TL 153, DBL 8451, BMW G 90010, GME 00252, GMW 0047, DIN 50962. Zinc-iron standardization concerning spay constancy (CrVi-free systems) in hours DIN EN ISO 9227

Advantages:

Very good corrosion protection
Increased temperature resistance, high strength under extreme temperature stress
Decorative surfaces with high technical requirements.
Environmentally compatible, as free from Cr(VI)

Please note:

We offer Cr(VI)-free post finishing treatments for zinc/iron surfaces:
Passivations are available in black or transparent form. Top coats (sealing) are optional for the further improvement of the corrosion protection, but are not always necessary.

Area of utilisation:

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