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Coating of Sintered NdFeB Magnets

Coating TypeCoating TypeColorTypical Thickness RangeNeutral Salt Spray TestHumidity Heat TestPCT TestRecommended Application Temperature
Ni+Cu+Ni electroplating (barrel plating)NiCuNiSilver15μm48h500h48h<200℃
Ni+Cu+Ni electroplating (rack plating)NiCuNiSilver10μm16h500h48h<200℃
Blue white zinc electroplatingZnBlue white4μm24h48hN/A<200℃
Color zinc electroplatingCZnMulticolored4μm48h48hN/A<200℃
Ni-Cu+SnNiCu+SnSilver white15μm72h500h96h<180℃
Chemical nickel platingNiSilver8μm96h500h48h<200℃
Black/Gray epoxy(electrophoretic)Black EPBlack15μm240h500h96h<200℃
Epoxy coatingSEPBlack10μm240h500h96h<200℃
Ni+Cu(electrophoretic)NiCu+EPBlack25μm500h1000h200h<200℃
Zinc(electrophoretic)Zn+EPBlack18μm240h1000h200h<200℃
SSR coatingSSRGolden grey10μm1000h1000h300h<200℃
AlAlSilver white6μm96h500h96h<200℃

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