NdFeB Magnet Grades

NdFeB magnets are graded based on their magnetic properties and performance characteristics. The “NdFeB Magnet Grades” is a standardized way to communicate the material’s maximum energy product, a crucial indicator of its strength. Magnetstek Engineering has been supplying Neodymium Magnets for over 20 years. We manufacture strong Neodymium magnets according to our customers’ requirements and offer competitive prices. Our NdFeB Magnet Grades ranged from N35 to N56 and N to NTH.

How to Understand NdFeB Magnet Grade

The standard notation for NdFeB Magnet Grades consists of the following format: Nxx, where “N” stands for Neodymium and “xx” represents a two-digit number. The higher the number, the higher the maximum energy product and, consequently, the stronger the magnet. Additionally, some grades may include additional specifications ending with one or two letters, such as “H”, “M”, and “UH”. This gives information on the maximum working temperature resistance.

Magnetstek Engineering achieved exceptional NdFeB Magnet Grades of N54 and N56, which are even stronger than N52. We have also pushed the industry’s maximum operation temperature to 250°C/482°F (Grade NxxTH).

Here are the NdFeB Magnet Grades we provide now:

1. N35, N40, N42, N45, N48, N50, N52, N54, N56

These are among the lower grades, with N35 being less powerful and N52 being stronger within this range. The maximum operating temperature is 80°C/176°F while 70°C/158°F for N50 and N52.

2. N30M, N35M, N40M, N42M, N45M, N48M, N50M, N52M, N54M

The “M” in these grades indicates a medium temperature rating. These magnets are suitable for applications where elevated temperatures are a consideration. The maximum operating temperature is 100°C/212°F.

3. N30H, N33H, N35H, N38H, N40H, N42H, N45H, N48H, N50H, N52H, N54H

The “H” denotes a high-temperature rating, making these magnets more suitable for applications where heat resistance is essential. The maximum operating temperature is 120°C/248°F.

4. N30SH, N33SH, N35SH, N38SH, N40SH, N42SH, N45SH, N48SH, N50SH, N52SH, N54SH

The “SH” signifies a super high-temperature rating, suitable for applications with even higher operating temperatures. The maximum operating temperature is 150°C/302°F.

5. N28UH, N30UH, N33UH, N35UH, N38UH, N40UH, N42UH, N45UH, N48UH, N50UH, N52UH

The “UH” indicates an ultra-high-temperature rating, making these magnets suitable for extremely high-temperature environments. The maximum operating temperature is 180°C/356°F.

6. N28EH, N30EH, N33EH, N35EH, N38EH, N40EH, N42EH, N45EH, N48EH, N50EH

The “EH” represents an extra high-temperature rating, suitable for applications requiring a balance of high strength and temperature resistance. The maximum operating temperature is 200°C/392°F.

7. N28AH, N30AH, N33AH, N35AH, N38AH, N40AH, N42AH, N45AH

The maximum operating temperature is 230°C/446°F.

8. N30TH, N33TH, N35TH

The maximum operating temperature is 250°C/482°F.

MagnetsTek Engineering NdFeB Magnet Grades

Grade	Remanence Induction/Br.		Coercive Force/HcB		Intrinsic Coercive Force/HcJ		Maximum Energy Product/(BH)max		Max Working Temp.	Curie Temp.
	T	KGs	KA/m	KOe	KA/m	KOe	KJ/m³	MGOe	°C/°F	°C/°F
N35	1.17-1.21	11.7-12.1	≥876	≥11	≥955	≥12	263-279	33-35	80/176	310/590
N38	1.23-1.30	12.3-13.0	≥876	≥11	≥955	≥12	287-318	36-40	80/176	310/590
N40	1.26-1.32	12.6-13.2	≥876	≥11	≥955	≥12	302-334	38-42	80/176	310/590
N42	1.29-1.35	12.9-13.5	≥876	≥11	≥955	≥12	318-350	40-44	80/176	310/590
N45	1.32-1.38	13.2-13.8	≥876	≥11	≥955	≥12	334-366	42-46	80/176	310/590
N48	1.37-1.43	13.7-14.3	≥876	≥11	≥955	≥12	358-390	45-49	80/176	310/590
N50	1.40-1.45	14.0-14.5	≥876	≥11	≥955	≥12	374-406	47-51	70/158	310/590
N52	1.42-1.48	14.2-14.8	≥836	≥10.5	≥876	≥11	390-422	49-53	70/158	310/590
N54	1.45-1.49	14.5-14.9	≥836	≥10.5	≥955	≥11	406-437	51-55	80/176	310/590
N56	1.47-1.51	14.7-15.1	≥836	≥10.5	≥876	≥12	414-454	52-57	80/176	310/590
N35M	1.17-1.21	11.7-12.1	≥892	≥11.2	≥1114	≥14	263-279	33-35	100/212	340/644
N38M	1.23-1.30	12.3-13.0	≥915	≥11.5	≥1114	≥14	287-318	36-40	100/212	340/644
N40M	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1114	≥14	302-334	38-42	100/212	340/644
N42M	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1114	≥14	318-350	40-44	100/212	340/644
N45M	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1114	≥14	334-366	42-46	100/212	340/644
N48M	1.37-1.43	13.7-14.3	≥1019	≥12.8	≥1114	≥14	358-390	45-49	100/212	340/644
N50M	1.40-1.45	14.0-14.5	≥1043	≥13.1	≥1114	≥14	374-406	47-51	100/212	340/644
N52M	1.42-1.48	14.2-14.8	≥1059	≥13.3	≥1114	≥14	390-422	49-53	100/212	340/644
N33H	1.14-1.17	11.4-11.7	≥820	≥10.3	≥1353	≥17	247-263	31-33	120/248	340/644
N35H	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1353	≥17	263-295	33-37	120/248	340/644
N38H	1.23-1.30	12.3-13.0	≥915	≥11.5	≥1353	≥17	286-318	36-40	120/248	340/644
N40H	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1353	≥17	302-334	38-42	120/248	340/644
N42H	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1353	≥17	318-350	40-44	120/248	340/644
N45H	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1353	≥17	334-366	42-46	120/248	340/644
N48H	1.37-1.43	13.7-14.3	≥1011	≥12.7	≥1353	≥17	358-390	45-49	120/248	340/644
N50H	1.40-1.45	14.0-14.5	≥1027	≥12.9	≥1353	≥17	374-406	47-51	120/248	340/644
N30SH	1.08-1.12	10.8-11.2	≥804	≥10.1	≥1592	≥20	223-239	28-30	150/302	340/644
N33SH	1.14-1.21	11.4-12.1	≥852	≥10.7	≥1592	≥20	247-279	31-35	150/302	340/644
N35SH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1592	≥20	263-295	33-37	150/302	340/644
N38SH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥1592	≥20	287-318	36-40	150/302	340/644
N40SH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1592	≥20	302-334	38-42	150/302	340/644
N42SH	1.29-1.35	12.9-13.5	≥963	≥12.1	≥1592	≥20	318-350	40-44	150/302	340/644
N45SH	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1592	≥20	334-366	42-46	150/302	340/644
N48SH	1.37-1.43	13.7-14.3	≥1011	≥12.7	≥1592	≥20	358-390	45-49	150/302	340/644
N50SH	1.40-1.45	14.0-14.5	≥1027	≥12.9	≥1592	≥20	374-406	47-51	150/302	340/644
N28UH	1.04-1.08	10.4-10.8	≥780	≥9.8	≥1990	≥25	207-223	26-28	180/356	350/662
N30UH	1.08-1.13	10.8-11.3	≥796	≥10.0	≥1990	≥25	223-255	28-31	180/356	350/662
N33UH	1.14-1.18	11.4-11.8	≥852	≥10.5	≥1990	≥25	247-279	31-35	180/356	350/662
N35UH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥1990	≥25	263-295	33-37	180/356	350/662
N38UH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥1990	≥25	287-318	36-40	180/356	350/662
N40UH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1990	≥25	302-334	38-42	180/356	350/662
N42UH	1.28-1.35	12.8-13.5	≥963	≥12.1	≥1990	≥25	310-350	39-44	180/356	350/662
N45UH	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1990	≥25	334-366	42-46	180/356	350/662
N48UH	1.37-1.42	13.7-14.2	≥1019	≥12.8	≥1910	≥24	358-390	45-49	180/356	350/662
N30EH	1.08-1.15	10.8-11.5	≥812	≥10.2	≥2388	≥30	223-255	28-32	200/392	350/662
N33EH	1.14-1.21	11.4-12.1	≥851	≥10.7	≥2388	≥30	247-279	31-35	200/392	350/662
N35EH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥2388	≥30	263-295	33-37	200/392	350/662
N38EH	1.23-1.29	12.3-12.9	≥915	≥11.5	≥2388	≥30	287-318	36-40	200/392	350/662
N40EH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥2388	≥30	302-334	38-42	200/392	350/662
N42EH	1.28-1.35	12.8-13.5	≥963	≥12.1	≥2388	≥30	310-350	39-44	200/392	350/662
N45EH	1.33-1.38	13.3-13.8	≥995	≥12.5	≥2308	≥29	334-366	42-46	200/392	350/662
N28AH	1.04-1.12	10.4-11.2	≥772	≥9.7	≥2786	≥35	207-239	26-30	230/446	350/662
N30AH	1.08-1.15	10.8-11.5	≥812	≥10.2	≥2786	≥35	223-255	28-32	230/446	350/662
N33AH	1.14-1.21	11.4-12.1	≥852	≥10.7	≥2786	≥35	247-279	31-35	230/446	350/662
N35AH	1.17-1.24	11.7-12.4	≥876	≥11.0	≥2786	≥35	263-295	33-37	230/446	350/662
N38AH	1.23-1.27	12.3-12.7	≥923	≥11.6	≥2786	≥35	287-318	36-40	230/446	350/662
N40AH	1.26-1.31	12.6-13.1	≥939	≥11.8	≥2628	≥33	302-334	38-42	230/446	350/662
N30TH	1.08-1.13	10.8-11.3	820	10.3	≥3182	≥40	223-247	28-31	250/482	350/662
N33TH	1.11-1.17	11.1-11.7	851	10.7	≥3182	≥40	239-271	31-34	250/482	350/662
N35TH	1.17-1.22	11.7-12.2	867	10.9	≥3182	≥40	263-287	33-36	250/482	350/662

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NdFeB Magnet Grades