BALFORD.Metalworking engineering answers

Heat treatment and surface finishing

What zinc plating and salt spray performance is available?

Answer

What is high salt-spray zinc plating? + Zinc plating is judged by how long the plated part survives neutral salt spray before white or red rust appears. A high salt-spray specification means the coating thickness, the passivation type and any post-treatment are chosen to reach a longer test duration than a standard commercial finish. The hours are agreed against the drawing —

Sources

  1. Zhuji Huaxin Electroplating | Zinc Plating Partner | Balford
    What is high salt-spray zinc plating? + Zinc plating is judged by how long the plated part survives neutral salt spray before white or red rust appears. A high salt-spray specification means the coating thickness, the passivation type and any post-treatment are chosen to reach a longer test duration...
  2. Shanghai Dingmeng Industrial | Zinc-Nickel Plating Partner
    What corrosion performance can be expected? + Corrosion performance is verified per the agreed test method and specification (e.g. neutral salt spray hours) on the actual part geometry. Results depend on coating thickness, nickel content, passivation type and substrate condition โ€” the final requirem...
  3. Passivation vs Electropolishing vs Plating: Which Treatment
    Why is zinc-nickel plating common in automotive? Because it provides substantially better corrosion resistance than plain zinc at a thickness that still suits stamped parts, and it can be specified with a defined salt spray requirement. Who should declare the plating chemistry? The supplier that man...
  4. Surface Treatment Suppliers | Balford Supplier Network
    Electroplated zinc coatings for corrosion protection of carbon steel components. Explore Process โ†’ Zinc-Nickel Alloy Plating Zinc-nickel alloy plating for enhanced corrosion resistance and stable surface performance. Explore Process โ†’ Pickling Acid pickling for scale and oxide removal before further...
  5. Passivation vs Electropolishing vs Plating: Which Treatment To Specify
    A: No, passivation removes free iron from the surface rather than bulk material, so dimensions are effectively unchanged. Electropolishing, by contrast, does remove material. Q: Why is zinc-nickel plating common in automotive? A: Because it provides substantially better corrosion resistance than pla...
  6. Shanghai Dingmeng Industrial | Zinc-Nickel Plating Partner
    Located in the Keteng Environmental plating park, Haiyan, Jiaxing (Xitangqiao Street, Zhongle Road 88, C1-3) Certified ISO 9001 and IATF 16949 quality management systems Serves automotive and electronics customers across Shanghai, Hangzhou, Jiangsu, Ningbo and Jiaxing Full laboratory with salt spray...

What an engineer still needs from you

  • material and material condition (grade, temper)
  • material thickness, plus the key diameter, height and wall thickness
  • tolerances, burr direction and the visual acceptance standard
  • annual volume - it decides whether tooling is single-hit, progressive or transfer
  • surface finish, and any secondary machining, annealing or plating
Next step. Send the drawing for a manufacturability review, or send the part data for a process and cost route.
Submit a drawing / RFQDFM review

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This page is an engineering answer, not a quotation and not a dimensional acceptance. It is generated from Balford's published material and held to the verified company fact sheet.