SmCo Magnets

Two common compositions of SmCo magnets are Sm1Co5 and Sm2Co17. Generally, the cost of SmCo magnets is higher than NdFeB magnets. As a big advantage, SmCo magnets can operate at higher temperatures up to 300 degrees Centigrade. SmCo magnets are widely used in applications in which higher operating temperature and higher corrosion and oxidation resistance are crucial.

Samarium Cobalt Magnet (SmCo magnets, magnet ring, magnet tiles, block magnets, magnet cylinder, rare earth magnet, strong magnet, permanent magnet)

SmCo Magnets

SmCo magnet is a high performance, low temperature coefficient permanent magnet made of samarium and cobalt and other rare-earth elements. Its biggest advantage is its high working temperature---350℃, in general, magnetizing field of approximately 30 to 45 KOe are required. It needn't to be coated because it is difficult to be eroded and oxidized. SmCo magnet is widely used in motors, watch, transducers, instruments, positional detector, generators, radar and other applications.
Process Flow
Raw material-----Mixing-----Melting-----Power-----Pressing-----Sintering----Magnetic ¡¡¡¡Inspection-----Cutting and Grinding-----Inspection-----Packing and Shipping

MAGNETIC AND PHYSICAL PROPERTIES OF SINTERED SMCO MAGNET

Grade		SmCo18	SmCo20	SmCo22	SmCo24	SmCo24	SmCo26L
Br	Mt	840	890	930	980	980	1030
Br	Gs	8400	8900	9300	9800	9800	10300
Hcj	KA/m	605	637	637	676	676	398
Hcj	Oe	7600	8000	8000	8500	8500	5000
Hcb	KA/n	1432	1432	1432	1432	1989	438
Hcb	Oe	18000	18000	18000	18000	25000	5500
(BH)max	KJ/m3	143	159	175	191	191	207
(BH)max	MGOe	18	20	22	24	24	26
Density	g/cm3	8.1	8.2	8.2	8.3	8.3	8.3
Temperature Coefficient	Near Br %/K	-0.04	-0.04	-0.04	-0.03	-0.03	-0.03
Temperature Coefficient	Near Hcj %/K	-0.3	-0.3	-0.3	-0.2	-0.2	-0.2
Curie Temperature Tc	℃	750	750	750	800	800	800
Maximum Working Temperature Tw	℃	250	250	250	280	280	300

Grade		SmCo26	SmCo26	SmCo26	SmCo28	SmCo28	SmCo30	SmCo30
Br	Mt	1030	1030	1030	1070	1070	1100	1100
Br	Gs	10300	10300	10300	10700	10700	11000	11000
Hcj	KA/m	716	716	716	756	756	772	772
Hcj	Oe	9000	9000	9000	9500	9500	9700	9700
Hcb	KA/n	1194	1592	1989	1194	1592	1194	1592
Hcb	Oe	15000	20000	25000	15000	20000	15000	20000
(BH)max	KJ/m3	207	207	207	223	223	239	239
(BH)max	MGOe	26	26	26	28	28	30	30
Density	g/cm3	8.3	8.3	8.3	8.3	8.3	8.3	8.3
Temperature Coefficient	Near Br %/K	-0.03	-0.03	-0.03	-0.03	-0.03	-0.03	-0.03
Temperature Coefficient	Near Hcj %/K	-0.2	-0.2	-0.2	-0.2	-0.2	-0.2	-0.2
Curie Temperature Tc	℃	800	800	800	800	800	800	800
Maximum Working Temperature Tw	℃	300	300	330	300	300	300	300