SmCo Magnets

Physical Characteristics

The physical properties are hard, brittle and fragile, and the accuracy is mainly guaranteed by grinding. The mechanical properties of the surface can be enhanced after plating.

Parameter

Unit

SmCo5

Sm2Co17

Density

G/cm^3

8.3

8.4

Curie Temp.

K

1000

1100

Vickers hardness

MPa

450-500

550-600

Compressive strength

MPa

1000

800

Resistivity

Ω.cm

5~6X10-5

5~6X10-5

Bending strength

MPa

150-180

130-150

Tensile strength

MPa

400

350

Coefficient of thermal expansion

10-6/℃

∥6;⊥12

∥8;⊥11

Chemical properties

Chemical properties are stable, not easy to be oxidized and corroded. Generally, surface treatment is not required. Sometimes, surface plating is used to enhance the mechanical properties of products, such as zinc plating, nickel plating, tin plating, etc

Temperature characteristic

With good temperature stability, the maximum working temperature can reach 350℃

Performance & Grade

Grade

Br

Hcb

Hcj

BH(max)

Curie Temp.   

TC

Maxmimum Working Temp.

TW

Temp. Coefficient of Br

T

KGs

KA/m

KOe

KA/m

KOe

KJ/M3

MGOe

℃

℃

%/℃

(SmPr)Co5

YX-18

0.85-0.90

8.5-9.0

660-700

8.3-8.8

1194-1830

15-23

127-143

16-18

750

250

-0.050

YX-20

0.90-0.94

9.0-9.4

676-725

8.5-9.1

1194-1830

15-23

150-167

19-21

750

250

-0.050

YX-22

0.92-0.96

9.2-9.6

710-748

8.9-9.4

1194-1830

15-23

160-175

20-22

750

250

-0.050

YX-24

0.96-1.00

9.6-10.0

730-770

9.2-9.7

1194-1830

15-23

175-190

22-24

750

250

-0.050

SmCo5

YX-18S

0.84-0.89

8.4-8.9

660-700

8.3-8.8

≧1830

≧23

135-151

17-19

750

250

-0.035

YX-20S

0.89-0.93

8.9-9.3

684-732

8.6-9.2

≧1830

≧23

150-167

19-21

750

250

-0.040

YX-22S

0.92-0.96

9.2-9.6

710-756

8.9-9.5

≧1830

≧23

167-183

21-23

750

250

-0.045

YX-24S

0.96-1.00

9.6-10.0

740-788

9.3-9.9

≧1830

≧23

183-199

23-25

750

250

-0.045

Sm2Co17

YXG-22

0.93-0.97

9.3-9.7

676-740

8.5-9.3

≧1433

≧18

160-183

20-23

800

300

-0.020

YXG-24

0.95-1.02

9.5-10.2

692-764

8.7-9.6

≧1433

≧18

175-191

22-24

800

300

-0.025

YXG-26

1.02-1.05

10.2-10.5

748-796

9.4-10.0

≧1433

≧18

191-207

24-26

800

300

-0.030

YXG-28

1.03-1.08

10.3-10.8

756-812

9.5-10.2

≧1433

≧18

207-220

26-28

800

300

-0.035

YXG-30

1.08-1.10

10.8-11.0

788-835

9.9-10.5

≧1433

≧18

220-240

28-30

800

300

-0.035

YXG-32

1.10-1.13

11.0-11.3

812-860

10.2-10.8

≧1433

≧18

230-255

30-32

800

300

-0.035

YXG-24H

0.95-1.02

9.5-10.2

692-764

8.7-9.6

≧1990

≧25

175-191

22-24

800

350

-0.025

YXG-26H

1.02-1.05

10.2-10.5

748-796

9.4-10.0

≧1990

≧25

191-207

24-26

800

350

-0.030

YXG-28H

1.03-1.08

10.3-10.8

756-812

9.5-10.2

≧1990

≧25

207-220

26-28

800

350

-0.035

YXG-30H

1.08-1.10

10.8-11.0

788-835

9.9-10.5

≧1990

≧25

220-240

28-30

800

350

-0.035

YXG-32H

1.10-1.13

11.0-11.3

812-860

10.2-10.8

≧1990

≧25

230-255

30-32

800

350

-0.035