Metal Finishing – Plating & Coating
Zinc Plating
Sacrificial corrosion protection for steel parts; available with clear, yellow and black passivation.
Process
Electrolytic zinc plating for corrosion protection of iron and steel parts. Applied in two bath types, alkaline and cyanide, with yellow, blue, white, black and clear passivation options.
What it provides
- Corrosion resistance
- Decorative finish
Frequently asked questions
Which passivation colours are available?
Clear (blue), yellow, black and white passivation are applied to ASTM-B633. Yellow gives the highest corrosion resistance; trivalent chromium alternatives are available.
How long does it last in salt spray?
Depending on thickness and passivation, 96–200 hours to white rust and 200–500 hours to red rust in ASTM-B117 are typical; the quotation states the target hours from the specification.
Have a drawing for this process?
Send your technical drawing or 3D CAD model through our secure channel. Our engineering team replies with a quotation against the specification.