Working Principle

Samarium cobalt is composed of metal samarium, cobalt and other rare earth elements. It has the characteristics of large magnetic energy product, extremely low temperature coefficient, high thermal stability, strong corrosion resistance and non-oxidizability. Therefore, it is widely used in high-tech fields such as motors, instruments, sensors, detectors, engines, and radars without electroplating.

SmCo Process

Physical Properties

Manetic propertites - SmCo5

Grade	Item	Remanence (Br)	Remanence (Br)	Coercivity (Hcb)		Intrinsic Coercive Force (Hci)		Max. Energy Product (BH)max		(TC)	Density (D)	Max. Working Temperature (Tw)
Grade	Item	KGs	T	kOe	kA/m	kOe	kA/m	MGOe	kJ/m³	℃	g/cm³	℃
SmCo5	Sm16	8.1-8.5	0.81-0.85	7.8-8.3	620-660	15-23	1194-1830	14-16	110-127	750	8.0-8.3	250
	Sm18	8.5-9.0	0.85-0.90	8.3-8.8	660-700	15-23	1194-1830	16-18	127-143	750	8.0-8.3	250
	Sm20	9.0-9.4	0.90-0.94	8.5-9.1	676-725	15-23	1194-1830	19-21	150-167	750	8.0-8.3	250
	Sm22	9.2-9.6	0.92-0.96	8.9-9.4	710-748	15-23	1194-1830	20-22	160-175	750	8.0-8.3	250
	Sm24	9.6-10.0	0.96-1.00	9.2-9.7	730-770	15-23	1194-1830	22-24	175-190	750	8.0-8.3	250
	Sm16S	7.9-8.4	0.79-0.84	7.7-8.3	612-660	≥23	≥1830	15-17	118-135	750	8.0-8.3	250
	Sm18S	8.4-8.9	0.84-0.89	8.1-8.7	644-692	≥23	≥1830	17-19	135-151	750	8.0-8.3	250
	Sm20S	8.9-9.3	0.89-0.93	8.6-9.2	684-732	≥23	≥1830	19-21	150-167	750	8.0-8.3	250
	Sm22S	9.2-9.6	0.92-0.96	8.9-9.5	710-756	≥23	≥1830	21-23	167-183	750	8.0-8.3	250
	Sm24S	9.6-10.0	0.96-1.00	9.3-9.9	740-788	≥23	≥1830	23-25	183-199	750	8.0-8.3	250

Manetic propertites - Sm2Co17

Grade	Item	Remanence (Br)		Coercivity (Hcb)		Intrinsic Coercive Force (Hci)		Max. Energy Product (BH)max		(TC)	Density (D)	Max. Working Temperature (Tw)
Grade	Item	KGs	T	kOe	kA/m	kOe	kA/m	MGOe	kJ/m³	℃	g/cm³	℃
Sm2Co17	Sm22	9.3-9.7	0.93-0.97	8.5-9.3	676-740	≥18	≥1433	20-23	160-183	800	8.3-8.4	300
	Sm24	9.5-10.2	0.95-1.02	8.7-9.6	692-764	≥18	≥1433	22-24	175-191	800	8.3-8.4	300
	Sm26	10.2-10.5	1.02-1.05	9.4-10	748-796	≥18	≥1433	24-26	191-207	800	8.3-8.4	300
	Sm28	10.3-10.8	1.03-1.08	9.5-10.2	756-812	≥18	≥1433	26-28	207-220	800	8.3-8.4	300
	Sm30	10.8-11.5	1.08-1.15	9.9-10.5	788-835	≥18	≥1433	28-30	220-240	800	8.3-8.4	300
	Sm32	11-11.5	1.10-1.15	10.2-10.8	812-860	≥18	≥1433	29-32	230-255	800	8.3-8.4	300
	Sm24H	9.5-10.2	0.95-1.02	8.7-9.6	692-764	≥25	≥1990	22-24	175-191	800	8.3-8.4	350
	Sm26H	10.2-10.5	1.02-1.05	9.4-10.0	748-796	≥25	≥1990	24-26	191-207	800	8.3-8.4	350
	Sm28H	10.3-10.8	1.03-1.08	9.5-10.2	756-812	≥25	≥1990	26-28	207-220	800	8.3-8.4	350
	Sm30H	10.8-11.0	1.08-1.10	9.9-10.5	788-835	≥25	≥1990	28-30	220-240	800	8.3-8.4	350
	Sm32H	11-11.3	1.10-1.13	10.2-10.8	812-860	≥25	≥1990	29-32	230-255	800	8.3-8.4	350
	Sm26M	10.2-10.6	1.02-1.05	8.5-9.8	676-780	12-18	955-1433	24-26	191-207	800	8.3-8.4	300
	Sm28M	10.3-10.8	1.03-1.08	8.5-10.0	676-796	12-18	955-1433	26-28	207-220	800	8.3-8.4	300
	Sm30M	10.8-11.0	1.08-1.10	8.5-10.5	676-835	12-18	955-1433	28-30	220-240	800	8.3-8.4	300
	Sm32M	11.0-11.3	1.10-1.13	8.5-10.7	676-852	12-18	955-1433	29-32	230-255	800	8.3-8.4	300
	Sm24L	9.5-10.2	0.95-1.02	6.8-9.0	541-716	8-12	636-955	22-24	175-191	800	8.3-8.4	250
	Sm26L	10.2-10.5	1.02-1.05	6.8-9.4	541-748	8-12	636-955	24-26	191-207	800	8.3-8.4	250
	Sm28L	10.3-10.8	1.03-1.08	6.8-9.6	541-764	8-12	636-955	26-28	207-220	800	8.3-8.4	250
	Sm30L	10.8-11.5	1.08-1.15	6.8-10.0	541-796	8-12	636-955	28-30	220-240	800	8.3-8.4	250
	Sm32L	11.0-11.5	1.10-1.15	6.8-10.2	541-812	8-12	636-955	29-32	230-255	800	8.3-8.4	250