Magnet coatings

The following information comes from Jinkun’s domestic website. Please confirm specific technical parameters and applicable conditions with us.

Coating properties

Coating types	Thickness	Appearance	Corrosion resistance					Notes
Coating types	Thickness	Appearance	PCT	Salt spray	Damp heat	Acids and alkalis	Oil
Blue-white zinc plating Zn	≥5 μm	Blue-white	——	★★	★★★	——	★
Colour zinc plating Zn	≥5 μm	iridescent	——	★★★	★★★★	——	★
Nickel+copper+nickel Ni+Cu+Ni	≥15 μm	Silver-white	★★★	★★★★	★★★★★	★★★	★★★
Nickel+copper+nickel+tin Ni+Cu+Ni+Sn	≥15 μm	Silver-white	★★★★	★★★★	★★★★★	——	——	Excellent solderability
Electroless nickel	≥5 μm	Silver-white	★★★★	★★★★★	★★★★★	★★★	★★★
Epoxy	≥12 μm	Black or grey	★★★	★★★★★	★★★★★	★★★★★	★★★★	Poor wear resistance
Passivated	≤2 μm	Black or grey	——	——	★★★	——	★★★
Aluminium Al	≥3 μm	Silver-grey	★★★★	★★★	★★★★	——	★★★	High adhesion
Aluminium + epoxy Al+Epoxy	≥15 μm	Black or grey	★★★★★	★★★★★	★★★★★	★★★★★	★★★★★	Poor wear resistance
Zinc-aluminium Zn-Al	≥10 μm	Silver-white or silver-grey	★★★★★	★★★★★	★★★★★	——	★★★★★
Everluber	≥5 μm	Golden yellow	★★★★	★★★★	★★★★★	★★★★★	★★★★
Teflon	≥5 μm	Black	★★	★★★	★★★★★	★★★★★	★★★	Good wear resistance
Parylene coating	≥3 μm	Transparent	★★	★★★	★★★★★	★★★★★	★★★	Implantable in the human body

Note: Stars indicate coating corrosion resistance; “——” means not applicable.