Performance Parameters of Neodymium Magnets

Grade

B_r

H_cJ

H_cB

(BH)_max

H_k / H_cJ^a

Operating
Temp.

Curie
Temp.

kGs

kOe

kA/m

kOe

kA/m

MGOe

kJ/m³

°C

Min

Max

Min

Max

N35	11.8	1.18	12	960	10.8	860	33	36	263	287	95	80	310
N38	12.3	1.23	12	960	10.8	860	36	39	287	310	95	80	310
N40	12.6	1.26	12	960	10.8	860	38	41	302	326	95	80	310
N42	12.9	1.29	12	960	10.8	860	40	43	318	342	95	80	310
N45	13.3	1.33	12	960	10.8	860	43	46	342	366	95	80	310
N48	13.7	1.37	12	960	10.5	836	45	49	358	390	95	80	310
N50	13.9	1.39	12	960	10.5	836	47	51	374	406	95	80	310
N52	14.2	1.42	12	960	10.5	836	49	53	390	422	95	80	310
N54	14.5	1.45	11	875	10.5	836	51	55	406	438	95	80	310
N35M	11.8	1.18	14	1114	10.8	860	33	36	263	287	95	100	310
N38M	12.3	1.23	14	1114	11.0	876	36	39	287	310	95	100	310
N40M	12.6	1.26	14	1114	11.4	910	38	41	302	326	95	100	310
N42M	12.9	1.29	14	1114	11.8	938	40	43	318	342	95	100	310
N45M	13.3	1.33	14	1114	12.2	971	43	46	342	366	95	100	310
N48M	13.7	1.37	14	1114	12.7	1012	45	49	358	390	95	100	310
N50M	13.9	1.39	14	1114	13.0	1035	47	51	374	406	95	100	310
N52M	14.2	1.42	13	1035	12.5	995	49	53	390	422	95	100	310
N33H	11.4	1.14	17	1353	10.6	844	31	34	247	271	95	120	310
N35H	11.8	1.18	17	1353	11.0	876	33	36	263	287	95	120	310
N38H	12.3	1.23	17	1353	11.4	910	36	39	287	310	95	120	310
N40H	12.6	1.26	17	1353	11.7	930	38	41	302	326	95	120	310
N42H	12.9	1.29	17	1353	12.0	957	40	43	318	342	95	120	310
N45H	13.3	1.33	17	1353	12.5	995	43	46	342	366	95	120	310
N48H	13.7	1.37	16	1274	12.8	1000	45	49	358	390	95	120	310
N50H	13.9	1.39	16	1274	13.0	1035	47	51	374	406	95	120	310
N33SH	11.4	1.14	20	1592	10.5	836	31	34	247	271	90	150	320
N35SH	11.8	1.18	20	1592	11.0	876	33	36	263	287	90	150	320
N38SH	12.3	1.23	20	1592	11.1	886	36	39	287	310	90	150	320
N40SH	12.6	1.26	20	1592	11.5	912	38	41	302	326	90	150	320
N42SH	12.9	1.29	20	1592	11.8	938	40	43	318	342	90	150	320
N45SH	13.3	1.33	20	1592	11.8	938	43	46	342	366	90	150	320
N48SH	13.7	1.37	19	1512	12.8	1035	45	49	358	390	90	150	320
N30UH	10.8	1.08	25	1990	9.50	756	28	31	223	247	90	180	330
N33UH	11.4	1.14	25	1990	10.3	816	31	34	247	271	90	180	330
N35UH	11.8	1.18	25	1990	10.6	845	33	36	263	287	90	180	330
N38UH	12.3	1.23	25	1990	11.1	886	36	39	287	310	90	180	330
N40UH	12.6	1.26	25	1990	11.5	912	38	41	302	326	90	180	330
N42UH	12.9	1.29	25	1990	11.8	938	40	43	318	342	90	180	330
N45UH	13.3	1.33	24	1911	12.2	976	43	46	342	366	90	180	330
N28EH	10.5	1.05	30	2388	9.50	756	26	29	207	231	90	200	330
N30EH	10.8	1.08	30	2388	9.50	756	28	31	223	247	90	200	330
N33EH	11.4	1.14	30	2388	10.3	816	31	34	247	271	90	200	330
N35EH	11.8	1.18	30	2388	11.1	883	33	36	263	287	90	200	330
N38EH	12.2	1.22	30	2388	11.6	923	36	39	287	310	90	200	330
N40EH	12.5	1.25	30	2388	11.9	947	38	41	302	326	90	200	330
N42EH	12.8	1.28	29	2308	12.0	971	40	43	318	342	90	200	330
N28AH	10.5	1.05	35	2786	9.50	756	26	29	207	231	90	230	350
N30AH	10.8	1.08	35	2786	10.1	804	28	31	223	247	90	230	350
N33AH	11.4	1.14	35	2786	10.2	816	31	34	247	271	90	230	350
N35AH	11.8	1.18	35	2786	10.6	845	33	36	263	287	90	230	350
N38AH	12.2	1.22	33	2627	11.6	923	36	39	287	310	90	230	350

Grade	Br	HcJ	HcB	(BH)max	Operating Temperature
N35	>1.18T	>12kOe	>10.8kOe	33~36MGOe	<80°C
N38	>1.23T	>12kOe	>10.8kOe	36~39MGOe	<80°C
N40	>1.26T	>12kOe	>10.8kOe	38~41MGOe	<80°C
N42	>1.29T	>12kOe	>10.8kOe	40~43MGOe	<80°C
N45	>1.33T	>12kOe	>10.8kOe	43~46MGOe	<80°C
N48	>1.37T	>12kOe	>10.5kOe	45~49MGOe	<80°C
N50	>1.39T	>12kOe	>10.5kOe	47~51MGOe	<80°C
N52	>1.42T	>12kOe	>10.5kOe	49~53MGOe	<80°C
N54	>1.45T	>11kOe	>10.5kOe	51~55MGOe	<80°C
N35M	>1.18T	>14kOe	>10.8kOe	33~36MGOe	<100°C
N38M	>1.23T	>14kOe	>11.0kOe	36~39MGOe	<100°C
N40M	>1.26T	>14kOe	>11.4kOe	38~41MGOe	<100°C
N42M	>1.29T	>14kOe	>11.8kOe	40~43MGOe	<100°C
N45M	>1.33T	>14kOe	>12.2kOe	43~46MGOe	<100°C
N48M	>1.37T	>14kOe	>12.7kOe	45~49MGOe	<100°C
N50M	>1.39T	>14kOe	>13.0kOe	47~51MGOe	<100°C
N52M	>1.42T	>13kOe	>12.5kOe	49~53MGOe	<100°C
N33H	>1.14T	>17kOe	>10.6kOe	31~34MGOe	<120°C
N35H	>1.18T	>17kOe	>11.0kOe	33~36MGOe	<120°C
N38H	>1.23T	>17kOe	>11.4kOe	36~39MGOe	<120°C
N40H	>1.26T	>17kOe	>11.7kOe	38~41MGOe	<120°C
N42H	>1.29T	>17kOe	>12.0kOe	40~43MGOe	<120°C
N45H	>1.33T	>17kOe	>12.5kOe	43~46MGOe	<120°C
N48H	>1.37T	>16kOe	>12.8kOe	45~49MGOe	<120°C
N50H	>1.39T	>16kOe	>13.0kOe	47~51MGOe	<120°C
N33SH	>1.14T	>20kOe	>10.5kOe	31~34MGOe	<150°C
N35SH	>1.18T	>20kOe	>11.0kOe	33~36MGOe	<150°C
N38SH	>1.23T	>20kOe	>11.1kOe	36~39MGOe	<150°C
N40SH	>1.26T	>20kOe	>11.5kOe	38~41MGOe	<150°C
N42SH	>1.29T	>20kOe	>11.8kOe	40~43MGOe	<150°C
N45SH	>1.33T	>20kOe	>11.8kOe	43~46MGOe	<150°C
N48SH	>1.37T	>19kOe	>12.8kOe	45~49MGOe	<150°C
N30UH	>1.08T	>25kOe	>9.5kOe	28~31MGOe	<180°C
N33UH	>1.14T	>25kOe	>10.3kOe	31~34MGOe	<180°C
N35UH	>1.18T	>25kOe	>10.6kOe	33~36MGOe	<180°C
N38UH	>1.23T	>25kOe	>11.1kOe	36~39MGOe	<180°C
N40UH	>1.26T	>25kOe	>11.5kOe	38~41MGOe	<180°C
N42UH	>1.29T	>25kOe	>11.8kOe	40~43MGOe	<180°C
N45UH	>1.33T	>24kOe	>12.2kOe	43~46MGOe	<180°C
N28EH	>1.05T	>30kOe	>9.5kOe	26~29MGOe	<200°C
N30EH	>1.08T	>30kOe	>9.5kOe	28~31MGOe	<200°C
N33EH	>1.14T	>30kOe	>10.3kOe	31~34MGOe	<200°C
N35EH	>1.18T	>30kOe	>11.1kOe	33~36MGOe	<200°C
N38EH	>1.22T	>30kOe	>11.6kOe	36~39MGOe	<200°C
N40EH	>1.25T	>30kOe	>11.9kOe	38~41MGOe	<200°C
N42EH	>1.28T	>29kOe	>12.0kOe	40~43MGOe	<200°C
N28AH	>1.05T	>35kOe	>9.5kOe	26~29MGOe	<230°C
N30AH	>1.08T	>35kOe	>10.1kOe	28~31MGOe	<230°C
N33AH	>1.14T	>35kOe	>10.2kOe	31~34MGOe	<230°C
N35AH	>1.18T	>35kOe	>10.6kOe	33~36MGOe	<230°C
N38AH	>1.22T	>33kOe	>11.6kOe	36~39MGOe	<230°C

Remarks: 1 T = 10 kGs 1 kA/m = 4π×10^-3 kOe 1 kJ/m³ = 4π×10^-2 MGOe

Remanence Temperature Coefficient

Series	Temperature Range	Reference Range (%/℃)
N	20℃ ~ 100℃	-0.70 ~ -0.82
M	20℃ ~ 100℃	-0.65 ~ -0.80
H	20℃ ~ 100℃	-0.65 ~ -0.75
SH	20℃ ~ 100℃	-0.55 ~ -0.70
SH	20℃ ~ 150℃	-0.50 ~ -0.65
UH	20℃ ~ 100℃	-0.53 ~ -0.66
UH	20℃ ~ 180℃	-0.48 ~ -0.61
EH	20℃ ~ 100℃	-0.50 ~ -0.62
EH	20℃ ~ 200℃	-0.46 ~ -0.58
AH	20℃ ~ 100℃	-0.47 ~ -0.60
AH	20℃ ~ 200℃	-0.45 ~ -0.56

Intrinsic Coercivity Temperature Coefficient

Series	Temperature Range	Reference Range (%/℃)
N	20℃ ~ 100℃	-0.70 ~ -0.82
M	20℃ ~ 100℃	-0.65 ~ -0.80
H	20℃ ~ 100℃	-0.65 ~ -0.75
SH	20℃ ~ 100℃	-0.55 ~ -0.70
SH	20℃ ~ 150℃	-0.50 ~ -0.65
UH	20℃ ~ 100℃	-0.53 ~ -0.66
UH	20℃ ~ 180℃	-0.48 ~ -0.61
EH	20℃ ~ 100℃	-0.50 ~ -0.62
EH	20℃ ~ 200℃	-0.46 ~ -0.58
AH	20℃ ~ 100℃	-0.47 ~ -0.60
AH	20℃ ~ 200℃	-0.45 ~ -0.56

Mechanical Physical Properties of Neodymium Magnets

Property	Unit	Reference Range
Density	g/cm³	7.40 ~ 7.70
Vickness Hardness	HV	500 ~ 700
Compressive Strength	MPa	1000 ~ 1100
Tensile Strength	MPa	80 ~ 90
Bending Strength	MPa	150 ~ 400
Thermal Conductivity	W/(m·K)	8 ~ 10
Young's Modulus	Gpa	150 ~ 200
Electrical Resistivity C∥ (20℃)	μΩ·m	1.4 ~ 1.6
Electrical Resistivity C⊥ (20℃)	μΩ·m	1.2 ~ 1.4
Coefficient of Thermal Expansion C∥ (20℃ ~ 100℃)	10^-6/K	4 ~ 9
Coefficient of Thermal Expansion C⊥ (20℃ ~ 100℃)	10^-6/K	-2 ~ 10

Remarks: C∥ indicates the direction of magnetization , C⊥ indicates the direction of perpendicular magnetization.