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

Sintered Sm-Co Permanent Magnetic Alloy

Alloy

Specification

Chemical Composition, %

Type	Alloy	Remanence		Coercive force		Intrinsic coercive force		Maximum energy product
		(min)		Hcb(min)		Hci(min)		(BH)max
		/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

Feature

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 produc.

Application

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