The DIN 50961 standard specifies requirements for coatings made of zinc (Zn) and iron (Fe) for corrosion protection of steel components. The designation "Fe Zn 8b" refers to a specific type of coating that consists of a zinc-iron alloy with an iron content of 8% (by weight).
) are used for precision fasteners with tight thread tolerances. 4. Chromate Conversion Coating / Passivation ( B ) din 50961 fe zn 8b