Model Number

SM-series sintered type, BSM-series Bonded type

As part of the rare earth group of permanent magnets, samarium cobalt (SmCo) magnets typically fall into two families of materials. They include rare earth Sm1Co5 and Sm2Co17 and are referred to as 1:5 and 2:17 materials. There are three different manufacturing processes: sintered SmCo magnet, bonded SmCo magnet, and injection moulding SmCo magnet. SmCo magnet is high performance, low temperature coefficient permanent made of samarium and cobalt and other rare-earth elements. Its biggest advantage is high working temperature-300 degree centigrade. It needn to be coated because it is difficult to be eroded and oxidized. SmCo magnet is widely used in motor, watch, transducers, instruments, positional detector, generator, radar, etc.

Key features for sintered SmCo Magnet

 1) The most excellent temperature characteristics in Rare-Earth magnet family since mid-1960s.

2) Manufactured by a powder metallurgical process which involves the sintering of powder under vaccum. As part of rare earth group of magnets, SmCo magnets typically fall into two families of materials. They include SmCo5 and Sm2Co17, and commonly referred to as 1:5 and 2:17 materials

3) Good corrosion resistance and no special surface treatment is required, which makes SmCo an excellent choice for compact designs where high temperature environments my be present.

 4) Grinding and slicing can be operated into the desired shape and size. Sanxing Company has always been dedicated in the development of SmCo business around China and All over the world, ranging from sintered SmCo Magnet to bonded type in a very high quality and wide size ranges.

Sintered SmCo Magnet

Grade	Residual Flux Density Br		Coercive Force Hcb		Intrinsic Coercive force Hcj		Max. energy product (BH)max
	mT	kGs	kA/m	koe	kA/m	koe	kJ/m3	MGoe
SM6	500~600	5.0~6.0	358	4.5~5.5	960	12.0	47~72	6~9
SM10	600~700	6.0~7.0	438	5.5~6.5	1200	15.0	64~88	8~11
SM12	700~750	7.0~7.5	520	6.5~7.3	1591	20.0	96~120	12~15
SM16	750~880	7.5~8.8	59740	7.50.5	1591	20.0	12716	162
SM16A	750~880	7.5~8.8	59740	7.50.5	1989	25.0	12716	162
SM16B	750~880	7.5~8.8	59740	7.50.5	2386	30.0	12716	162
SM18	800~930	8.0~9.3	63740	8.00.5	1194	15.0	14316	182
SM18A	800~930	8.0~9.3	63740	8.00.5	1591	20.0	14316	182
SM18T	800~930	8.0~9.3	63740	8.00.5	1591	20.0	14316	182
SM18B	800~930	8.0~9.3	63740	8.00.5	1989	25.0	14316	182
SM20	900~980	9.0~9.8	63740	8.00.5	1432	18.0	15916	202
SM20	900~950	9.0~9.5	670	8.5~9.2	1591	20.0	15916	202
SM20A	900~980	9.0~9.8	63740	8.00.5	1989	25.0	15916	202
SM22	900~1030	9.0~10.3	65340	8.20.5	1432	18.0	17516	222
SM22A	900~1030	9.0~10.3	65340	8.20.5	1989	25.0	17516	222
SM24	950~1080	9.5~10.8	67640	8.20.5	1432	18.0	19116	242
SM24A	1000~1100	10.0~11.0	67640	8.20.5	1989	25.0	19116	242
SM26	1000~1130	10.0~11.3	357~516	4.5~6.5	413~556	5.0~7.0	20716	262
SM26A	1000~1130	10.0~11.3	71640	9.00.5	796	10.0	20716	262
SM26B	1000~1130	10.0~11.3	71640	9.00.5	1194	15.0	20716	262
SM26C	1000~1130	10.0~11.3	71640	9.00.5	1591	20.0	20716	262
SM26D	1000~1080	10.0~10.8	732	9.0~10.5	2300	30.0	20716	262
SM28	1060~1180	10.6~11.8	357~516	4.5~6.5	413~556	5.0~7.0	22316	282
SM28A	1060~1180	10.6~11.8	76340	9.60.5	796	10.0	22316	282
SM28B	1050~1150	10.5~11.5	750	9.4~9.8	960	12.0	22316	282
SM28C	1060~1180	10.6~11.8	76340	9.60.5	1194	15.0	22316	282
SM30	1100~1200	11.0~12.0	438~597	5.5~6.5	454~597	5.7~7.5	23816	302
SM30A	1100~1200	11.0~12.0	560	7.0~8.5	716	12.0	23816	302

Magnetic properties of bonded SmCo magnets by compressing moulding:

Grade	Br	HcB	HcJ	BHmax	Tc.	Tw.	aBr	ALLOY Series
	[mT] [Gs]	[KA/m] [Oe]	[KA/m] [Oe]	[kJ/m3] [MGOe]	[]	[]	[%/]
BSM-6A	400 4000	278 3500	800 10000	32 4.0	720	120	-0.08	1:5
BSM-8A	500 5000	318 4000	800 10000	48 6.0	720	120	-0.08
BSM-10A	600 6000	358 4500	800 10000	64 8.0	720	120	-0.08	2:17
BSM-12B	700 7000	318 4000	400 5000	80 10.0	720	120	-0.08
BSM-12HB	700 7000	398 5000	800 10000	80 10.0	720	120	-0.08

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