Samarium Cobalt Materials | HB SPEICAL ALLOY

Sintered Sm-Co Permanent Magnetic Alloy

Sm-Co (1:5 type), Sm-Co (2:17 type)

Samarium cobalt permanent magnet material is an important functional material, which is widely used. It is mainly used for permanent magnet micro and special motors. In special environments such as high temperature and high vacuum, the application of samarium cobalt permanent magnet motors is dominant. In the field of information industry, ring, rectangular and polygonal samarium cobalt permanent magnets are needed in electronic technology and communication. In addition, the application of magnetic ring electroacoustic devices in the third generation mobile phones of mobile communication system, high-grade microphones, hearing aids, pickups, micro speakers and other electroacoustic devices are inseparable from high-performance Samarium cobalt permanent magnets.

Magnetic Property

Type	Alloy	Remanence (min)		Coercive force Hcb(min)		Intrinsic coercive force Hci(min)		Maximum energy product (BH)max
Type	Alloy	/kG	/T	/kOe	kA.m-1	/kOe	/kA.m-1	/MGOe	/kJ.m-3
Sm-Co(1:5 type)	S14	7.3	0.73	6.5	517	15	1194	13-15	103-119
	S16	7.8	0.78	7	557	15	1194	15-17	119-135
	S18	8.4	0.84	7.5	597	15	1194	17-19	135-151
	S20	8.8	0.88	8	637	15	1194	19-21	151-167
Sm-Co(2:17 type)	S22	9.2	0.92	7	557	9.5	756	20-24	159-191
	S26	10	1	8	637	9.5	756	24-28	191-223
	S30	11.2	1.12	8	637	10	756	28-32	223-225
	S22H	9.2	0.92	8	637	15	1194	20-24	159-191
	S26H	10	1	9	716	15	1194	24-28	191-223

Physical Properties

Type	Average temperature coefficient αEr/%.K-1	Density /g.cm-3	Electrical resistance /μΩ.m	Hardness /Hv	Compress strength /MPa	Thermal expansion coefficient /10-6.K-1	Curie temperature /℃
Sm-Co(1:5 type)	0.04	8.2	50	500-550	290	5.6(//)13(ʟ)	700-750
Sm-Co(2:17 type)	0.03	8.4	80	500-550	520	6.5(//)13(ʟ)	800-850

Features

Sintered Sm-Co Permanent Magnetic Alloys are a group of rare-earth permanent magnetic materials manufactured by Powder metallurgy. They take on a good temperature stability, high coercive force and high energy product.

Applications

Red Sm-Co Permanent Magnetic Alloys are typically used for manufacturing timekeepers, mini high efficiency instruments, magnetic apparatus, and traveling wave tubes, etc.