Din 50961 Fe Zn 8b |verified| ✓
is a highly specific German engineering callout for an electroplated zinc coating on an iron or steel substrate. This technical designation defines a precise surface finish designed to protect industrial metal components from atmospheric corrosion and environmental degradation.
If you need an equivalent with better protection while keeping 8 µm thickness, specify or a top coat (sealer) .
) passivation . To match or exceed the corrosion resistance of the older process, modern formulations frequently include nano-silica topcoats or sealers over the trivalent zinc layer. Cross-Reference Table Legacy Specification (DIN 50961) Modern Equivalent (DIN EN ISO 2081) Visual Appearance Passivation Type Fe//Zn8//A or Fe//Zn8//B Clear / Blue-bright Trivalent ( CrIIIcap C r raised to the cap I cap I cap I power ) Thin-film din 50961 fe zn 8b
| Property | Value | |----------|-------| | Base material | Steel / Iron | | Coating | Electroplated zinc | | Thickness | 8 µm min. local | | Post-treatment | Blue passivation (Cr⁶⁺ or Cr³⁺) | | Appearance | Bright, metallic with blue tint | | Typical salt spray resistance (red rust) | ~12–24 h | | Typical applications | Interior fasteners, brackets, stamped parts, electronic chassis | | Superseding standard | ISO 2081 – Fe/Zn 8, blue |
Due to these parameters, this coating is classified for , making it ideal for indoor or protected environments where moisture exposure is minimal. Common Applications is a highly specific German engineering callout for
. This chemical dip adds a very thin, clear, or slightly blueish film that prevents the zinc itself from oxidizing (white rust) and gives the part its final polished, metallic appearance. : This specific configuration is designed for moderate humidity
DIN (Deutsches Institut für Normung) 50961 is the German industrial standard that governs the requirements for electroplated zinc coatings on ferrous materials. It ensures that regardless of who manufactures a part, the coating will meet consistent quality levels regarding corrosion protection, adhesion, and appearance. 2. The Base Material: Fe stands for ) passivation
The number specifies the minimum local coating thickness in micrometers (microns, µm). For , the zinc layer must be at least 8 µm thick on all significant surfaces. This thickness provides a moderate level of corrosion protection suitable for sheltered or indoor environments. 4. B (Chromate Conversion Coating / Passivation)
The German Institute for Standardization (Deutsches Institut für Normung) developed to provide uniform guidelines for electroplated finishes. It is widely used alongside the international standard DIN EN ISO 2081 .
