Sintered NdFeB Magnets

Sintered · Rare Earth

Overview

Sintered neodymium-iron-boron (NdFeB) is currently the strongest permanent magnet material in production, offering the highest energy product of any commercial magnet. It is the default choice wherever maximum field strength in minimum volume is required.

Our grain boundary diffusion process raises intrinsic coercivity and maximum working temperature while sharply reducing heavy rare-earth content — delivering high-temperature grades (SH / UH / EH / TH) at a controlled cost.

Available in discs, blocks, rings, arcs and custom geometries, with coatings including NiCuNi, Zn, epoxy, phosphate and multi-layer systems for demanding environments.

Key features

Highest energy product of any commercial magnet — (BH)max up to 462 kJ/m³ (58 MGOe)
Working temperatures from 80 °C (N) up to 240 °C (TH series)
Grain boundary diffusion for high coercivity with reduced heavy rare-earth usage
Coatings: NiCuNi, Zn, epoxy, phosphate, multi-layer electroplating and nano coating
Custom shapes to drawing with tight dimensional tolerances

Magnetic properties

Sintered NdFeB — N / M / H series
Grade	Br (T)	Br (kGs)	Hcj (kA/m)	Hcj (kOe)	Hcb (kA/m)	Hcb (kOe)	(BH)max (kJ/m³)	(BH)max (MGOe)	Max temp (°C)
N35	1.17–1.23	11.7–12.3	869	10.9	960	12.0	263–287	33–36	80
N38	1.22–1.25	12.2–12.5	899	11.3	960	12.0	287–310	36–39	80
N40	1.25–1.28	12.5–12.8	907	11.4	960	12.0	302–326	38–41	80
N42	1.29–1.33	12.9–13.3	960	11.5	915	11.5	318–342	40–43	80
N45	1.33–1.38	13.3–13.8	960	11.5	915	11.5	338–366	42.5–46	80
N48	1.38–1.42	13.8–14.2	960	11.5	915	11.5	362–390	45.5–49	80
N50	1.39–1.45	13.9–14.5	960	11.5	915	11.5	370–406	46.5–51	80
N52	1.43–1.48	14.3–14.8	960	11.5	915	11.5	386–422	48.5–53	80
N54	1.45–1.50	14.5–15.0	960	11.5	915	11.5	398–430	50–54	80
N56	1.47–1.52	14.7–15.2	960	12	915	11.5	410–446	51.5–56	80
N58	1.49–1.55	14.9–15.5	876	12	836	10.5	422–462	53–58	80
35M	1.17–1.22	11.7–12.2	868	14	868	10.9	263–287	33–36	100
38M	1.22–1.27	12.2–12.7	1114	14	915	11.5	287–310	36–39	100
40M	1.26–1.30	12.6–13.0	1114	14	940	11.8	302–326	38–41	100
42M	1.29–1.33	12.9–13.3	1114	14	964	12.1	318–342	40–43	100
45M	1.33–1.38	13.3–13.8	1114	14	995	12.5	338–366	42.5–46	100
48M	1.33–1.38	13.3–13.8	1114	14	995	12.5	366–390	46–49	100
50M	1.39–1.45	13.9–14.5	1114	14	1035	13.0	370–406	46–51	100
52M	1.42–1.48	14.2–14.8	1114	14	1035	13.0	386–422	48.5–53	100
55M	1.45–1.52	14.5–15.2	1035	14	971	12.2	398–446	50–56	100
35H	1.17–1.22	11.7–12.2	1353	17	873	11.0	263–287	33–36	120
38H	1.22–1.27	12.2–12.7	1353	17	915	11.5	287–310	36–39	120
40H	1.26–1.30	12.6–13.0	1353	17	940	11.8	302–326	38–41	120
42H	1.29–1.33	12.9–13.3	1353	17	964	12.1	318–342	40–43	120
45H	1.33–1.38	13.3–13.8	1353	17	1003	12.6	338–366	42.5–46	120
48H	1.37–1.42	13.7–14.2	1353	17	1035	13.0	358–390	45–49	120
50H	1.39–1.44	13.9–14.4	1353	17	1043	13.1	370–398	46.5–50	120
52H	1.42–1.47	14.2–14.7	1274	17	1075	13.5	382–414	48–52	120
54H	1.45–1.52	14.7–15.25	1353	17	1106	13.9	414–446	52–56	120

Sintered NdFeB — SH / UH / EH / TH series
Grade	Br (T)	Br (kGs)	Hcj (kA/m)	Hcj (kOe)	Hcb (kA/m)	Hcb (kOe)	(BH)max (kJ/m³)	(BH)max (MGOe)	Max temp (°C)
38SH	1.22–1.27	12.2–12.7	1592	20	915	11.5	287–310	36–39	150
40SH	1.26–1.30	12.6–13.0	1592	20	940	11.8	302–326	38–41	150
42SH	1.29–1.33	12.9–13.3	1592	20	971	12.2	318–342	40–43	150
45SH	1.33–1.38	13.3–13.8	1592	20	1003	12.6	338–366	42.5–46	150
48SH	1.37–1.42	13.7–14.2	1592	20	1035	13.0	358–390	45–49	150
50SH	1.39–1.44	13.9–14.4	1592	20	1043	13.1	366–398	46–50	150
52SH	1.42–1.47	14.2–14.7	1512	20	1075	13.5	382–414	48–52	150
54SH	1.45–1.52	14.5–15.25	1353	20	1106	13.9	414–446	52–56	150
35UH	1.18–1.23	11.8–12.3	1990	25	884	11.1	267–291	33.5–36.5	180
38UH	1.23–1.28	12.3–12.8	1990	25	923	11.6	291–314	36.5–39.5	180
40UH	1.26–1.30	12.6–13.0	1990	25	947	11.9	302–326	38–41	180
42UH	1.29–1.33	12.9–13.3	1990	25	971	12.2	318–342	40–43	180
44UH	1.32–1.36	13.2–13.6	1990	25	995	12.5	334–358	42–45	180
45UH	1.33–1.38	13.3–13.8	1910	25	1003	12.6	338–366	42.5–46	180
48UH	1.36–1.42	13.65–14.25	1990	25	1027	12.9	358–390	45–49	180
50UH	1.39–1.45	13.95–14.55	1990	25	1051	13.2	374–406	47–51	180
52UH	1.42–1.48	14.25–14.8	1990	25	1067	13.4	390–422	49–53	180
54UH	1.45–1.51	14.55–15.1	1990	25	1090	13.7	406–438	51–55	180
35EH	1.18–1.22	11.8–12.2	2388	30	884	11.1	267–291	33.5–36.5	200
38EH	1.22–1.27	12.2–12.7	2388	30	923	11.6	287–314	36–39.5	200
40EH	1.25–1.30	12.5–13.0	2388	30	947	11.9	302–326	38–41	200
42EH	1.28–1.33	12.8–13.3	2308	30	971	12.2	318–342	40–43	200
45EH	1.32–1.38	13.2–13.8	2388	30	995	12.5	334–366	42–46	200
48EH	1.36–1.42	13.65–14.25	2388	30	1027	12.9	358–390	45–49	200
50EH	1.39–1.45	13.95–14.55	2388	30	1051	13.2	374–406	47–51	200
33TH	1.14–1.19	11.4–11.9	2786	35	860	10.8	251–275	31.5–34.5	240
35TH	1.18–1.22	11.8–12.2	2786	35	891	11.2	267–291	33.5–36.5	240
38TH	1.22–1.27	12.2–12.7	2706	35	923	11.6	287–314	36–39.5	240
40TH	1.24–1.30	12.40–13.05	2786	35	947	11.9	305–326	37–41	240
42TH	1.27–1.33	12.70–13.35	2786	35	963	12.1	310–342	39–43	240
45TH	1.32–1.38	13.20–13.8	2786	35	995	12.5	334–366	42–46	240

Values are typical at 20 °C. Full per-grade datasheets and demagnetization curves are available on request.

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Sintered NdFeB Magnets

Overview

Key features

Magnetic properties

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