Samarium Cobalt

ABOUT SAMARIUM COBALT

Samarium cobalt is a rare earth material made by a powder metallurgical process.  Manufactured using binders such as epoxy, samarium cobalt magnets are inherently very brittle.  Users are discouraged from grinding material because the dry remnants are a fire hazard.  Some of the advantages of using samarium cobalt is that it provides excellent temperature stability and as well as excellent corrosion resistance.  Because of this, typically coating or plating is not required. Samarium cobalt is excellent for operating in harsh environments where it will be exposed to the elements as well as high operating temperatures.

Yunsheng offers a limited selection of the most popular material grades.

Samarium cobalt excels in harsh environments - common applications include marine, and aerospace.

SAMARIUM COBALT GRADES

Material

Grade

Energy Product(BH)max

Residual InductionBr(min-max)

Coercive ForceHCb(min-max)

Intrinsic Coercive Force Hcj(min-max)

DensityD

Rev. Temp Coeffa(Br)

Curie TempTC

Max Working Temp Tw



KJ/m^3

MGsOe

T

kGs

KA/m

KOe

KA/m

KOe

g/cm^3

%/°C

°C

°C

SmCo5

XG16

120~143

15~18

0.77-0.86

7.7-8.6

613-716

7.7-9.0

≥1194

≥15.0

8.3

-0.04

≥740

250

XG16H

120~143

15~18

0.77-0.86

7.7-8.6

613-716

7.7-9.0

≥1592

≥20.0

XG18

135~159

17~20

0.81~0.92

8.1~9.2

637~756

8.0~9.5

≥1194

≥15.0

XG18H

135~159

17~20

0.81~0.92

8.1~9.2

637~756

8.0~9.5

≥1592

≥20.0

XG20

151~175

19~22

0.85~0.95

8.5~9.5

637~756

8.0~9.5

≥1194

≥15.0

XG20H

151~175

19~22

0.85~0.95

8.5~9.5

637~756

8.0~9.5

≥1592

≥20.0

XG22

167~191

21~24

0.89~1.0

8.9~10.0

661~772

8.3~9.7

≥1194

≥15.0

XG22H

167~191

21~24

0.89~1.0

8.9~10.0

661~772

8.3~9.7

≥1592

≥20.0

Sm2Co17

XGS24M

175~199

22~25

0.92~1.04

9.2~10.4

318~788

4.0~9.9

398~1194

5.0~15.0

8.4

-0.03

≥850

350

XGS24

175~199

22~25

0.92~1.04

9.2~10.4

661~796

8.3~10.0

1194~1990

15.0~25.0

XGS24H

175~199

22~25

0.92~1.04

9.2~10.4

661~804

8.3~10.1

> 1990

> 25.0

XGS26M

191~215

24~27

1.0~1.06

10.0~10.6

318~796

4.0~10.0

398~1194

5.0~15.0

XGS26

191~215

24~27

1.0~1.06

10.0~10.6

677~820

8.5~10.3

1194~1990

15.0~25.0

XGS26H

191~215

24~27

1.0~1.06

10.0~10.6

677~820

8.5~10.3

> 1990

> 25.0

XGS28M

207~231

26~29

1.04~1.10

10.4~11.0

318~804

4.0~10.1

398~1194

5.0~15.0

XGS28

207~231

26~29

1.04~1.10

10.4~11.0

677~820

8.5~10.3

1194~1990

15.0~25.0

XGS28H

207~231

26~29

1.04~1.10

10.4~11.0

677~820

8.5~10.3

> 1990

> 25.0

XGS30M

223~247

28~31

1.07~1.12

10.7~11.2

318~804

4.0~10.1

398~1194

5.0~15.0

XGS30

223~247

28~31

1.07~1.12

10.7~11.2

700~828

8.8~10.4

1194~1990

15.0~25.0

XGS30H

223~247

28~31

1.07~1.12

10.7~11.2

700~828

8.8~10.4

> 1990

> 25.0

XGS32M

231~255

29~32

1.09~1.15

10.9~11.5

318~804

4.0~10.1

398~955

5.0~12.0

XGS32

231~255

29~32

1.09~1.15

10.9~11.5

716~836

9.0~10.5

> 955

> 12.0

Low Temp. Coeff.
Sm2Co17

XGS22LT

159~183

20~23

0.90~0.99

9.0~9.9

677~756

8.5~9.5

≥1194

≥15.0

8.4

-0.015

>850

350

XGS24LT

175~199

22~25

0.92~1.02

9.2~10.2

677~756

8.5~9.5

≥1194

≥15.0

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