​    Sintered NdFeb permanent magnet material is an alloy magnet composed of neodymium, iron, boron and other trace elements (Dy.A1.Nb.Ga.Mo.Co, etc.). Its manufacturing through the powder metallurgy process will be melted alloy ingot powder orientation in the magnetic field and molding, forming the embryo body in the condition of gas or vacuum sintering to densify, so the sintered Ndfeb has a very high magnetic energy product and coercivity, and cost-effective, and has good mechanical properties with contemporary magnetic king known.

Item	Coating	Coating color	colour	Temperature	PCT	Resistance to humidity and heat	Salt spray resistance	Corrosion resistance evaluation
Blue white zinc		8-15um	blue white	≤160°C	--	--	＞48hr	normal
Colored zinc		10-15um	iridescent	≤160°C	--	--	＞72hr	normal
Single layer nickel		20-30um	Bright silver	≤200°C	＞96hr	＞500hr	＞48hr	preferably
Chemical nickel		20-30um	Bright silver	≤120°C	＞200hr	＞500hr	＞200hr	preferably
nickel copper nickel		15-30um	Bright silver	≤200°C	＞48hr	＞500hr	＞72hr	good
Nickel + tin		20-30um	Semi brilliant silver	≤160°C	＞96hr	＞500hr	＞72hr	good
epoxy		10-30um	black	≤120°C	＞48hr	＞500hr	＞96hr	superb
phosphating		1-3um	Black gray	-	--	--	--	poor
Nickel + gold		10-20um	golden	-	＞96hr	＞500hr	72hr	superb

category	property	Remanent magnetism				Magnetic induction strength corrective force		Built-in corrective force		Maximum magnetic energy tax				Operating temperature
		KGs		T		kOe	kA/m	kOe	kA/m	MGOe		KJ/m²
		Mar	Min	Mar	Min					Mar	Min	Mar	Min
N	N54	15.1	14.5	1.51	1.45	≥10.5	≥836	≥11	≥876	55	51	438	406	≤80
	N52	14.8	14.2	1.48	1.42	≥10.5	≥836	≥11	≥876	53	49	422	390	≤80
	N50	14.5	14.0	1.45	1.40	≥11	≥876	≥12	≥955	51	47	406	374	≤80
	N48	14.3	13.7	1.43	1.37	≥11	≥876	≥12	≥955	49	45	390	358	≤80
	N45	13.8	13.2	1.38	132	≥11	≥876	≥12	≥955	46	42	366	334	≤80
	N42	13.5	12.9	13.5	12.9	≥11	≥876	≥12	≥955	44	40	350	318	≤80
	N40	13.2	12.6	1.32	1.26	≥11	≥876	≥12	≥955	42	38	334	302	≤80
	N38	13.0	12.2	1.30	1.22	≥11	≥876	≥12	≥955	40	36	318	287	≤80
M	N52M	14.8	14.2	1.48	1.42	≥13.3	≥1059	≥14	≥1114	53	49	422	390	≤100
	N50M	14.5	14.0	1.45	1.40	≥13.1	≥1043	≥14	≥1114	51	47	406	374	≤100
	N48M	14.3	13.7	1.43	1.37	≥12.8	≥1019	≥14	≥1114	49	45	390	358	≤100
	N45M	13.8	13.2	1.38	1.32	≥12.4	≥987	≥14	≥1114	46	42	366	334	≤100
	N42M	13.5	12.9	1.35	1.29	≥12.1	≥963	≥14	≥1114	44	40	350	318	≤100
	N40M	13.2	12.6	1.32	1.26	≥11.8	≥939	≥14	≥1114	42	38	334	302	≤100
	N38M	13.0	12.2	1.30	1.22	≥11.5	≥915	≥14	≥1114	40	36	318	287	≤100
H	N50H	14.5	14.0	1.45	1.40	≥12.9	≥1027	≥16	≥1274	51	47	406	374	≤120
	N48H	14.3	13.7	1.43	1.37	≥12.7	≥1011	≥16	≥1274	49	45	390	358	≤120
	N46H	14.0	13.4	1.40	1.34	≥12.5	≥995	≥17	≥1353	47	43	374	342	≤120
	N44H	13.7	13.1	1.37	1.31	≥12.3	≥979	≥17	≥1353	45	41	358	326	≤120
	N42H	13.5	12.9	1.35	1.29	≥12.1	≥963	≥17	≥1353	44	40	350	318	≤120
	N40H	13.2	12.6	1.32	1.26	≥11.8	≥939	≥17	≥1353	42	38	334	302	≤120
	N38H	13.0	12.2	1.30	1.22	≥11.5	≥915	≥17	≥1353	40	36	318	287	≤120
	N35H	12.4	11.7	1.24	1.17	≥11.0	≥876	≥17	≥1353	37	33	295	263	≤120
SH	N48SH	14.3	13.7	1.43	1.37	≥12.7	≥1011	≥20	≥1592	49	45	390	358	≤120
	N46SH	14.0	13.4	1.40	1.34	≥12.5	≥995	≥20	≥1592	47	43	374	342	≤150
	N44SH	13.7	13.1	1.37	1.31	≥12.3	≥979	≥20	≥1592	45	41	358	326	≤150
	N42SH	13.5	12.9	1.35	1.29	≥12.1	≥963	≥20	≥1592	44	43	350	318	≤150
	N40SH	13.2	12.6	1.32	1.26	≥11.8	≥939	≥20	≥1592	42	38	334	302	≤150
	N38SH	12.9	12.2	1.29	1.22	≥11.5	≥9154	≥20	≥1592	40	36	318	287	≤150
	N35SH	12.4	11.7	1.24	1.17	≥11.0	≥876	≥20	≥1592	37	33	295	263	≤150
	N33SH	12.1	11.4	1.21	1.14	≥10.7	≥852	≥20	≥1592	35	31	279	247	≤150
UH	N42UH	13.5	12.9	1.35	1.29	≥12.1	≥963	≥25	≥1990	44	40	350	318	≤180
	N40UH	13.2	12.6	1.32	1.26	≥11.8	≥939	≥25	≥1990	42	38	334	302	≤180
	N38UH	12.9	12.2	1.29	1.22	≥11.5	≥915	≥25	≥1990	40	36	318	287	≤180
	N35UH	12.4	11.7	1.24	1.17	≥11.0	≥876	≥25	≥1990	37	33	295	263	≤180
	N33UH	12.1	11.4	1.21	1.14	≥10.7	≥852	≥25	≥1990	35	31	279	247	≤180
	N30UH	11.6	10.8	1.16	1.08	≥10.2	≥812	≥25	≥1990	32	28	255	223	≤180
EH	N40EH	13.2	12.6	1.32	1.26	≥11.8	≥939	≥30	≥2388	42	38	334	302	≤200
	N38EH	12.9	12.2	1.29	1.22	≥11.5	≥915	≥30	≥2388	40	36	318	287	≤200
	N35EH	12.4	11.7	1.24	1.17	≥11.0	≥876	≥30	≥2388	37	33	295	263	≤200
	N33EH	12.1	11.4	1.21	1.14	≥10.7	≥851	≥30	≥2388	35	31	279	247	≤200
	N30EH	11.5	10.8	1.15	1.08	≥10.2	≥812	≥30	≥2388	32	28	255	223	≤200
AH	N35AH	12.4	11.7	1.24	1.17	≥11.0	≥876	≥35	≥2786	37	33	295	263	≤230
	N33AH	12.1	11.4	1.21	1.14	≥10.7	≥852	≥35	≥2786	35	31	279	247	≤230
	N30AH	11.5	10.8	1.15	1.08	≥10.2	≥812	≥35	≥2786	32	28	255	223	≤230
	N28AH	11.2	10.4	1.12	1.04	≥9.7	≥772	≥35	≥2786	30	26	239	207	≤230