Surface	Coating	Thickness μm	Color	SST Hours		PCT Hours
Nickel	Ni	10～20	Bright Silver	>24～72		>24～72
	Ni+Cu+Ni
Black Nickel	Ni+Cu+Ni	10～20	Bright Black	>48～96		>48
Cr3+Zinc	Zn C-Zn	5～8	Brighe Blue Shining Color	>16～48 >36～72		---
Sn	Ni+Cu+Ni+Sn	10～25	Silver	>36～72		>48
Au	Ni+Cu+Ni+Au	10～15	Gold	>12		>48
Ag	Ni+Cu+Ni+Ag	10～ 15	Silver	>12		>48
Epoxy	Epoxy	10～20	Black/Grey	>48		---
	Ni+Cu+Epoxy	15～30		>72～108		---
	Zn+Epoxy	15～25		>72～108		---
Passivation	---	1～3	Dark Grey	Temporary Protection		---
Phosphate	---	1～3	Dark Grey	Temporary Protection)		---

Item	Parameters	Reference Value	Unit
Auxiliary Magnetic Properties	Reversible Temperature Coefficient Of Br	-0.08--0.12	%/℃
	Reversible Temperature Coefficient Of Hcj	-0.42～-0.70	%/℃
	Specific Heat	0.502	KJ·(Kg ·℃)-1
	Curie Temperature	310~380	℃
Mechanical Physical Properties	Density	7.5~7.80	g/cm3
	Vickers Hardness	650	Hv
	Electrical Resistance	1.4x10-6	μQ ·m
	Compressive Strength	1050	MPa
	Tensile Strength	80	Mpa
	Bending Strength	290	Mpa
	Thermal Conductivity	6～8.95	W/m ·K
	Young's Modulus	160	GPa
	Thermal Expansion(C⊥)	-1.5	10-6/℃-1
	Thermal Expansion(CII)	6.5	10-6/℃-1

Application: Widely used in brushless motor, permanent magnet industrial motor, textile motor, automobile motor, permanent magnet direct drive motor, linear motor, air conditioning compressor motor, mechanical equipment permanent magnet motor, Marine generator, permanent magnet generator, permanent magnet propulsion motor, mining permanent magnet motor, coupling motor, chemical permanent magnet motor,drive motor for EV, pump motor, EPS motor, sensor and other area. Product customized: magnet are all customized,length can be from 0.5mm-200mm, width from 0.5mm-150mm, thickness from 0.5mm-70mm, which can meet most customers' requirement. Coating: NdfeB magnet is easy to oxidize, so normally it need a coating, the coating that common used in the market like: 1. ZN plating ( a kind of metal coating,salt spray test can reach 24-48 hours, high cost performance, so it is one of the best choice for most customers). 2. NICUNI (a kind of metal coating, salt spray test can reach 48-72 hours, cost performance is higher than ZN, but still very widely used in the market the assembly condition is harsh, the product corrosion resistance requirements of the customer can choose). 3. Epoxy (non-metallic coating, non-magnetic conductivity, can reduce the motor eddy current loss, salt spray test can reach 72-96 hours, higher cost than ZN an NICUNI coating.) 4. Other coating that also used: Phosphate, Sn, Au, Ag, Parylene and so on... Tolerance: Normally our magnet tolerance are +/-0.05mm after coating.