SmCo magnet

Samarium cobalt magnets are composed of samarium, cobalt and other rare earth materials by proportioning, and made by smelting, pressing and sintering, and which have high BH, corrosion resistance and oxidation resistance and extremely low reversible temperature coefficients. SmCo5 and Sm2Co17, (BH)max is in range of 16 to 32 MGOe. Maximum working temperature reaches 350°C. SmCo has an extreme low temperature coefficient and perfect corrosion resistance.

Compared with NdFeB magnets, SmCo magnets have stronger corrosion resistance, higher temperature stability and suitable for high temperature environments.

SmCo magnet are applied in Aerospace, National defense and Military industry, Microwave Devices, Communication Equipment, Medical Device, Instrument, Sensor, Motor, Magnetic cranes, etc.

Production flow diagram of SmCo magnet

PFD of SmCo

Our SmCo magnets are all REACH and ROHS compliant and don’t contain any SVHC. It is produced according to ISO 9001 and ISO 14001 Quality Control Standards. PPAP, APQP, CPK/PPK, 8-D, CO, FTA are available. SmCo magnets can be made in blocks, discs, rings, arcs and many other shapes. If you require a bespoke SmCo magnets or magnetic assembly, Technical Support or our SmCo Magnet Technical Data Sheet, please contact us. If you need a quotation for an existing magnet shape or a bespoke shape, please contact us. We offer a highly competitive price for your reference.

Typical Magnetic Performance for SmCo magnet

Material	Grade	Remanence		Coercive Force		Intrinsic Coercive		Max Energy		Working Temp
		Br		Hcb		Hcj		(BH)max		Working Temp
		T	KGs	KA/m	KOe	KA/m	KOe	KJ/m³	MGOe	℃
SmCo5	XG18	0.85-0.90	8.5-9.0	650-700	8.3-8.8	1194-1830	15-23	127-143	16-18	≤250
SmCo5	XG20	0.90-0.94	9.0-9.4	666-725	8.5-9.1	1194-1830	15-23	143-159	18-20	≤250
SmCo5	XG22	0.94-0.97	9.4-9.7	700-748	8.9-9.4	1194-1830	15-23	159-175	20-22	≤250
SmCo5	XG24	0.97-1.02	9.7-10.2	720-780	9.2-9.7	1194-1830	15-23	175-195	22-24	≤250
SmCo5	XG18H	0.85-0.90	8.5-9.0	650-700	8.3-8.8	≥1830	≥23	127-143	16-18	≤250
SmCo5	XG20H	0.90-0.94	9.0-9.4	666-725	8.5-9.1	≥1830	≥23	143-159	18-20	≤250
SmCo5	XG22H	0.94-0.97	9.4-9.7	710-748	8.9-9.4	≥1830	≥23	159-175	20-22	≤250
SmCo5	XG24H	0.97-1.02	9.7-10.2	730-780	9.2-9.8	≥1830	≥23	175-195	22-24	≤250
Sm2Co17	XGS20L	0.90-0.94	9.0-9.4	533-732	6.7-9.2	636-955	8-12	143-159	18-20	≤250
Sm2Co17	XGS22L	0.94-0.97	9.4-9.7	533-740	6.7-9.3	636-955	8-12	159-175	20-22	≤250
Sm2Co17	XGS24L	0.97-1.02	9.7-10.2	541-756	6.8-9.5	636-955	8-12	175-191	22-24	≤250
Sm2Co17	XGS26L	1.02-1.05	10.2-10.5	541-764	6.8-9.6	636-955	8-12	191-207	24-26	≤250
Sm2Co17	XGS28L	1.05-1.08	10.5-10.8	541-780	6.8-9.8	636-955	8-12	207-223	26-28	≤250
Sm2Co17	XGS30L	1.08-1.11	10.8-11.1	541-796	6.8-10.0	636-955	8-12	223-239	28-30	≤250
Sm2Co17	XGS32L-A	1.11-1.13	11.1-11.3	549-804	6.9-10.1	636-955	8-12	239-255	30-31	≤250
Sm2Co17	XGS32L-B	1.13-1.145	11.3-11.45	550-805	6.9-10.1	636-955	8-12	246-262	31-32	≤250
Sm2Co17	XGS20M	0.90-0.94	9.0-9.4	637-732	8.0-9.2	955-1433	12-18	143-159	18-20	≤300
Sm2Co17	XGS22M	0.94-0.97	9.4-9.7	645-740	8.1-9.3	955-1433	12-18	159-175	20-22	≤300
Sm2Co17	XGS24M	0.97-1.02	9.7-10.2	661-764	8.3-9.6	955-1433	12-18	175-191	22-24	≤300
Sm2Co17	XGS26M	1.02-1.05	10.2-10.5	685-788	8.6-9.9	955-1433	12-18	191-207	24-26	≤300
Sm2Co17	XGS28M	1.05-1.08	10.5-10.8	693-812	8.7-10.2	955-1433	12-18	207-223	26-28	≤300
Sm2Co17	XGS30M	1.08-1.11	10.8-11.1	700-828	8.8-10.4	955-1433	12-18	223-239	28-30	≤300
Sm2Co17	XGS32L-A	1.11-1.13	11.1-11.3	812-860	10.2-10.8	≥1433	≥18	239-255	30-31	≤300
Sm2Co17	XGS32L-B	1.13-1.145	11.3-11.45	820-870	10.3-10.9	≥1433	≥18	239-255	31-32	≤300
Sm2Co17	XGS20	0.90-0.94	9.0-9.4	653-732	8.2-9.2	≥1433	≥18	143-159	18-20	≤300
Sm2Co17	XGS22	0.94-0.97	9.4-9.7	677-740	8.5-9.3	≥1433	≥18	159-175	20-22	≤300
Sm2Co17	XGS24	0.97-1.02	9.7-10.2	693-772	8.7-9.7	≥1433	≥18	175-191	22-24	≤300
Sm2Co17	XGS26	1.02-1.05	10.2-10.5	748-796	9.4-10.0	≥1433	≥18	191-207	24-26	≤300
Sm2Co17	XGS28	1.05-1.08	10.5-10.8	756-820	9.5-10.3	≥1433	≥18	207-223	26-28	≤300
Sm2Co17	XGS30	1.08-1.11	10.8-11.1	788-836	9.9-10.5	≥1433	≥18	223-239	28-30	≤300
Sm2Co17	XGS32-A	1.11-1.13	11.1-11.3	812-860	10.2-10.8	≥1433	≥18	239-255	30-31	≤300
Sm2Co17	XGS32-B	1.13-1.145	11.3-11.45	820-870	10.3-10.9	≥1433	≥18	239-255	31-32	≤300
Sm2Co17	XGS20H	0.90-0.94	9.0-9.4	661-732	8.3-9.2	≥1990	≥25	143-159	18-20	≤350
Sm2Co17	XGS22H	0.94-0.97	9.4-9.7	685-740	8.6-9.3	≥1990	≥25	159-175	20-22	≤350
Sm2Co17	XGS24H	0.97-1.02	9.7-10.2	700-772	8.8-9.7	≥1990	≥25	175-191	22-24	≤350
Sm2Co17	XGS26H	1.02-1.05	10.2-10.5	756-796	9.5-10.0	≥1990	≥25	191-207	24-26	≤350
Sm2Co17	XGS28H	1.05-1.08	10.5-10.8	765-820	9.6-10.3	≥1990	≥25	207-223	26-28	≤350
Sm2Co17	XGS30H	1.08-1.11	10.8-11.1	796-836	10.0-10.5	≥1990	≥25	223-239	28-30	≤350
Sm2Co17	XGS32-A	1.11-1.13	11.1-11.3	820-860	10.3-10.8	≥1990	≥25	239-255	30-31	≤350
Sm2Co17	XGS32-B	1.13-1.15	11.3-11.5	830-880	10.4-11.0	≥1990	≥25	246-262	31-32	≤350
Sm2Co17	XGS16LT	0.81-0.85	8.1-8.5	605-669	7.6-8.4	≥1592	≥20	111-127	14-16	≤300
Sm2Co17	XGS18LT	0.85-0.90	8.5-9.0	629-708	7.9-8.9	≥1592	≥20	127-143	16-18	≤300
Sm2Co17	XGS20LT	0.90-0.94	9.0-9.4	661-732	8.3-9.2	≥1592	≥20	143-159	18-20	≤300
Sm2Co17	XGS22LT	0.94-0.97	9.4-9.7	685-740	8.6-9.3	≥1592	≥20	159-175	20-22	≤300

Physical properties of SmCo magnet

Material

Modulus of

elasticity

Ultimate

tensile

strength

Density

Electrical Resistivity

Curie

temperature

Recoil

permeability

Temp. Coeff.

of Br

SmCo5

23 x 106 psi

6 x 103 psi

8.2 g/cm³

5 µ-ohm-cm/cm²

700-750 ℃

1.00-1.05

-0.045% / ℃

Sm2Co17

17 x 106 psi

5 x 103 psi

8.4 g/cm³

86 µ-ohm-cm/cm²

800-850 ℃

1.00-1.10

-0.03 % / ℃

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