Din 50961 Fe Zn 8b Jun 2026

| Component | Meaning | Details | | :--- | :--- | :--- | | | The governing standard | German industrial standard for electroplated zinc coatings on iron and steel. Superseded by DIN EN ISO 2081 (but still widely used in legacy drawings). | | Fe | Base Material | Ferrous material (Iron/Steel). The coating system is designed for steel substrates. | | Zn | Coating Material | Zinc . The primary metallic layer applied via electroplating. | | 8 | Coating Thickness | 8 µm (microns) minimum local thickness of the zinc layer. | | b | Post-Treatment Type | Blue passivation (iridescent blue to slightly yellowish/rainbow effect). Low chromate (Cr III or Cr VI historical). |

The designation DIN 50961 Fe/Zn 8/B a technical specification used in engineering and manufacturing to describe a specific type of protective coating: electrodeposited zinc on iron or steel din 50961 fe zn 8b

If you are looking for the current equivalent to , you should look at ISO 2081. | Component | Meaning | Details | |

Historically, "b" passivation used hexavalent chromium (Cr VI). Due to EU RoHS and ELV directives, most modern Fe Zn 8b coatings use trivalent chromium (Cr III) . The corrosion resistance is similar, but the color is slightly less iridescent. Always clarify with your plater if hex-free is mandatory. The coating system is designed for steel substrates