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Fastener Surface Treatment Process Comparison Zinc Plating vs Nickel Plating vs Black Oxide vs Dacromet
Fastener Surface Treatment Process Comparison and Selection Guide
Surface treatment directly affects the rust resistance, appearance and service life of fasteners. Different coating processes suit different working conditions and budgets.
Process Performance Comparison
| Treatment | Rust Resistance | Appearance | Wear Resistance | Cost | Application |
| Zinc Plating | Medium | Bright | Normal | Lowest | Indoor general equipment |
| Nickel Plating | Good | High Gloss | Good | Medium | Precision electronic devices |
| Black Oxide | Normal | Matte Black | Good | Low | Mechanical structural parts |
| Dacromet | Excellent | Silver Gray | Super Weather Resistance | High | Outdoor and corrosive environments |
Summary
Zinc plating is cost-effective for general use. Nickel plating provides premium appearance. Black oxide suits mechanical structures. Dacromet is the best choice for outdoor and harsh industrial environments.