Din 50961 Fe Zn — 8b New!

If your supply chain requires full RoHS/REACH compliance, explicitly specify "tCr blue passivation (trivalent)" alongside DIN 50961 Fe Zn 8b.

is a German technical specification for electroplated zinc coatings on iron or steel. It is often used in conjunction with ISO 2081 , which has largely superseded or supplemented it for modern industrial requirements. Specification Breakdown din 50961 fe zn 8b

A brilliant blue surface with a metallic sheen and subtle rainbow iridescence. It is the most visually attractive of all chromate finishes. Corrosion Resistance (Red Rust): According to the standard, Fe Zn 8b must withstand 72 hours in the neutral salt spray test (NSS) before red rust appears (when using Cr(III) based passivations). Electrical Conductivity: The blue film is very thin (approx. 0.1–0.5 µm). Unlike yellow or olive passivations, Fe Zn 8b offers relatively low contact resistance , making it ideal for threaded connections that require electrical grounding (e.g., automotive chassis bolts, electronic enclosures). Weldability: Due to its thin, conductive layer, blue passivated zinc is preferred over thicker coatings for resistance spot welding. If your supply chain requires full RoHS/REACH compliance,