Stepper motor magnets is an alloy magnet that maily comprises the Neodymium, Iron and Boron Metal, The manufacturing engineering of NdFeB makes use of a process of powder metallurgy such like alloy powder being pressed in the magnetic flux and being sintered in the vacuum furnace or inert gases environment so that the magnets possibly have high coercive force, high product energy, high performance price ratio and favorable mechanicalness. Characteristics as details:
1. Products of high precision, one can be achieved by forming the required accuracy, no post-processing.
2. Temperature stability up to 150 degrees
3. High intrinsic coercivity
4. Good corrosion resistance, surface quality zinc, nickel, or the surface of epoxy coating, corrosion resistance excellent.

Grade	Remanence induction		Coercive force		Intrinsic Coercive force		maximum Energy product		Temperature	Density
	Br		Hcb		Hcj		(BH)max		Tw	ρ
	T	KGs	KA/m	KOe	KA/m	KOe	KJ/m 3	MGOe	ºC	g/cm 3
N33	1.14-1.17	11.4-11.7	≥836	≥10.5	≥955	≥12	247-263	31-33	≤80	≥7.4
N35	1.17-1.22	11.7-12.2	≥859	≥10.8	≥955	≥12	263-287	33-36	≤80	≥7.4
N38	1.22-1.26	12.2-12.6	≥859	≥10.8	≥955	≥12	287-303	36-38	≤80	≥7.5
N40	1.26-1.29	12.6-12.9	≥836	≥10.5	≥955	≥12	303-318	38-40	≤80	≥7.5
N42	1.29-1.32	12.9-13.2	≥836	≥10.5	≥955	≥12	318-342	40-43	≤80	≥7.5
N45	1.32-1.37	13.2-13.7	≥836	≥10.5	≥955	≥12	342-359	43-45	≤80	≥7.5
N48	1.36-1.42	13.6-14.2	≥836	≥10.5	≥955	≥12	358-382	45-49	≤80	≥7.5
N50	1.40-1.45	14.0-14.5	≥836	≥10.5	≥955	≥12	374-406	47-51	≤80	≥7.5
N52	1.42-1.48	14.2-14.8	≥836	≥10.5	≥876	≥11	389-422	49-53	≤80	≥7.5
N30M	1.08-1.14	10.8-11.4	≥812	≥10.2	≥1114	≥14	223-247	28-31	≤100	≥7.5
N33M	1.14-1.17	11.4-11.7	≥852	≥10.7	≥1114	≥14	247-263	31-33	≤100	≥7.5
N35M	1.17-1.22	11.7-12.2	≥876	≥11.0	≥1114	≥14	263-287	33-36	≤100	≥7.5
N38M	1.22-1.26	12.2-12.6	≥916	≥11.5	≥1114	≥14	287-303	36-38	≤100	≥7.5
N40M	1.26-1.29	12.6-12.9	≥939	≥11.8	≥1114	≥14	303-318	38-40	≤100	≥7.5
N42M	1.29-1.32	12.9-13.2	≥955	≥12.0	≥1114	≥14	318-334	40-42	≤100	≥7.5
N45M	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1114	≥14	334-366	42-46	≤100	≥7.5
N48M	1.36-1.42	13.6-14.2	≥1018	≥12.8	≥1114	≥14	358-390	45-49	≤100	≥7.5
N50M	1.39-1.45	13.9-14.5	≥1050	≥13.2	≥1114	≥14	374-406	47-51	≤100	≥7.5
N30H	1.08-1.14	10.8-11.4	≥812	≥10.2	≥1353	≥17	223-247	28-31	≤120	≥7.5
N33H	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1353	≥17	247-263	31-33	≤120	≥7.5
N35H	1.17-1.22	11.7-12.2	≥875	≥11.0	≥1353	≥17	263-287	33-36	≤120	≥7.5
N38H	1.22-1.26	12.2-12.6	≥916	≥11.6	≥1353	≥17	287-303	36-38	≤120	≥7.5
N40H	1.26-1.29	12.6-12.9	≥939	≥11.8	≥1353	≥17	303-318	38-40	≤120	≥7.5
N42H	1.29-1.32	12.9-13.2	≥955	≥12.0	≥1353	≥17	318-334	40-42	≤120	≥7.5
N45H	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1353	≥17	334-366	42-46	≤120	≥7.5
N48H	1.36-1.42	13.6-14.2	≥1026	≥12.9	≥1273	≥16	358-390	45-49	≤120	≥7.5
N30SH	1.08-1.14	10.8-11.4	≥812	≥10.2	≥1592	≥20	223-247	28-31	≤150	≥7.5
N33SH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1592	≥20	247-263	31-33	≤150	≥7.5
N35SH	1.17-1.22	11.7-12.2	≥876	≥11.0	≥1592	≥20	263-287	33-36	≤150	≥7.5
N38SH	1.22-1.26	12.2-12.6	≥899	≥11.3	≥1592	≥20	287-303	36-38	≤150	≥7.5
N40SH	1.26-1.29	12.6-12.9	≥931	≥11.7	≥1592	≥20	303-318	38-40	≤150	≥7.5
N42SH	1.29-1.32	12.9-13.2	≥963	≥12.1	≥1592	≥20	318-334	40-42	≤150	≥7.5
N44SH	1.30-1.36	13.0-13.6	≥995	≥12.3	≥1592	≥20	326-359	41-45	≤150	≥7.5
N30UH	1.08-1.14	10.8-11.4	≥812	≥10.2	≥1990	≥25	223-247	28-31	≤180	≥7.5
N33UH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1990	≥25	247-263	31-33	≤180	≥7.5
N35UH	1.17-1.22	11.7-12.2	≥875	≥11.0	≥1990	≥25	263-287	33-36	≤180	≥7.5
N38UH	1.22-1.26	12.2-12.6	≥915	≥11.5	≥1990	≥25	287-302	36-38	≤180	≥7.5
N40UH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1990	≥25	302-334	38-42	≤180	≥7.5
N30EH	1.08-1.14	10.8-11.4	≥812	≥10.2	≥2388	≥30	223-247	28-31	≤200	≥7.5
N33EH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥2388	≥30	247-263	31-33	≤200	≥7.5
N35EH	1.17-1.25	11.7-12.5	≥875	≥11.0	≥2388	≥30	263-295	33-37	≤200	≥7.5
N38EH	1.22-1.29	12.2-12.9	≥907	≥11.4	≥2388	≥30	287-318	36-40	≤200	≥7.5
N30AH	1.08-1.20	10.8-12.0	≥860	≥10.8	≥2626	≥33	2