Din 50961 Fe Zn 8b

Electrodeposited zinc coating, 8 µm minimum local thickness on all functional surfaces, followed by trivalent blue/clear chromate passivation. No white rust before 8 hours NSS per ISO 9227. Hydrogen embrittlement relief: Bake at 200°C for 8 hours within 4 hours of plating for steel >1000 MPa.

"Fe/Zn" stands for Iron/Zinc. This indicates that the base material (Iron/Steel) has been coated with a layer of Zinc. This is the industry standard for sacrificial corrosion protection—the zinc corrodes preferentially to the steel, keeping the part structurally sound. din 50961 fe zn 8b

If you're looking to specify a corrosion protection coating for your components, consider the following recommendations: Electrodeposited zinc coating, 8 µm minimum local thickness