Smco Magnets

Product Description

Samarium Cobalt SmCo Magnets

High-Performance Magnets with Excellent Temperature Stability

Samarium cobalt magnets (also known as SmCo magnets), are extremely powerful permanent magnetS. Part of the rare-earth magnet family, SmCo magnets rank similarly in strength to neodymium magnets but have much higher temperature stability and higher coercivity. They can operate at temperatures up to 525°F (300°C). In addition, they have a very high resistance to demagnetization and to corrosion. SmCo magnets are available in numerous shapes, sizes and grades that span a wide range of properties and application requirements.

SmCo Magnetic Materials Properties Data

Samarium Cobalt -Magnetic Properties
Grade	Press¹	Type²	Br (kGauss)	Hc (kOersteds)	Hci (kOersteds)	BHmax (MGOe)	Temperature Coefficients (%/℃)		Maximum Operating Temp @ Pc =2(²)
Grade	Press¹	Type²	Range	Typical	Minimum	Range	of Br	of Hci	(℃)	(°F)
S3410	D	2:17	11,3～12,1	100	100	29～34	-0.03	-0.22	~300	~570
S3320	D	2:17	11,2～12,0	106	200	28～33	-0.04	-0.27	~325	~610
S3310	D	2:17	11,2～12,0	90	100	28～33	-0.04	-0.25	~300	~570
S3120	D	2:17	10,7～11,5	103	200	25～31	-0.04	-0.20	~350	~660
S3018	D	2:17	10,2～11,2	98	180	24～30	-0.04	-0.20	~400	~750
S3007	D	2:17	10,5～11,2	825	700	24～30	-0.04	-0.17	~250	~480
S2909	D	2:17	10,2～11,0	925	900	25～29	-0.03	-0.17	~300	~570
S2809	D	2:17	10,0～10,8	925	900	24～28	-0.03	-0.19	~300	~570

1 D: Die-Pressed, I: Isostatcally-Pressed
2 Type: Sm.Co5 or Sm2C017 types
3 The Maximum Operating Temperature shown here is for magnets operating at a Permeance Coeficient of 2. At the temperatures shown the materal's BH Curve does not develop a knee and is still fairly linear.

Samarium Cobalt-Typical Physical Properties
Density		Bending Strength		Compressive Strength		Electrical Resistivity(Ωm)	Coeff.Of Thermal Expansion⁴		Curie Temperature
(kg/m³)	(Ibs/in³)	(kg/m²)	(Ibs/in²)	(kg/m²)	(Ibs/in²)	Electrical Resistivity(Ωm)	// M	”'M	(℃)	(°F)
8.4x10³	0.30⁴	1.2×10³	1.7×10⁴	9.1x10³	1.3×10⁵	0.8x10^-6	9.2×10^-6	11.8×10^-6	825	1510