Magnet coating is essential to protect magnets from corrosion, wear, and damage while enhancing durability and appearance. Common coatings include nickel, zinc, epoxy, or gold, chosen based on application needs. Proper coating ensures magnets maintain strength and reliability even in harsh environments.
Nickel-Based Coatings
Bright Nickel (Ni-Cu-Ni): Standard corrosion-resistant coating with a shiny finish.
Black Nickel (Ni): Dark appearance, moderate corrosion resistance.
White Satin Nickel: Matte silver finish, good for decorative applications.
Black Satin Nickel: Dark matte finish, aesthetic and functional.
Silver Nickel (Ag): High conductivity, used in specialized electronics.
Chromium Nickel (Cr): Hard, wear-resistant, and corrosion-proof.
Zinc-Based Coatings
Zinc (Zn): Economical, basic corrosion protection (not for harsh environments).
Blue White Zinc (Zn): Bright silver-like finish.
Black Zinc (Zn): Darker appearance, slightly better corrosion resistance.
If you don’t know how to choose, please contact us
Material Type | Temperature Resistance (°c) | Corrosion Resistance | Wear Resistance | Adhesion | Cost (yuan/m²) | Salt Spray Resistance (hours) |
Nickel Plating | -50 ~ 300 | Moderate to Good | Medium | High | 50 ~ 150 | 500 ~ 1000 |
Galvanizing | -50 ~ 200 | Medium (needs to be passivated) | Low to Medium | Medium | 30 ~ 100 | 200 ~ 500 |
Epoxy Resin | -30 ~ 120 | Excellent | Medium to High | Very high | 80 ~ 200 | 1000+ |
Gold Plating | -50 ~ 250 | Excellent | Low | Medium | 500 ~ 2000 | 1000+ |
Silver | -50 ~ 200 | Good (easy to vulcanize) | Low | Medium | 300 ~ 1000 | 500 ~ 1000 |
Chrome Plating | -50 ~ 400 | Excellent | Very High | High | 100 ~ 300 | 1000+ |
Aluminum Coating | -50 ~ 600 | Good (need to be sealed) | Medium | Medium to High | 70 ~ 180 | 500 ~ 1500 |
Plastic and Rubber Coatings | -40 ~ 120 | good | Medium | Medium | 40 ~ 120 | 200 ~ 800 |
Everlube Coating | -70 ~ 230 | Excellent | High (self-lubricating) | Medium | 200 ~ 500 | 1000+ |
Teflon Coating | -200 ~ 260 | Excellent | Medium (low friction) | Low to Medium | 150 ~ 400 | 500 ~ 1000 |