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  Typical Product Specification
  Conversion of Unit

 

 

Magnetic And Physical Characteristics

Composition

Sm2Co17

XG 32 30 28 26 24 22

SmCo5
XG 24 22 20 18

Physical characteristics

Curie temperature

800 to 850

700 to 750

(K)

(1073 to 1123)

(973 to 1023)

Thermal expansion coefficient

C//

1℃

8×10-6

6×10-6

(1K)

(8×10-6)

(6×10-6)

C⊥

1℃

11×10-6

13×10-6

(1K)

(11×10-6 )

(13×10-6)

Thermal conductivity

Kcal/mhr℃

10

11

(W/mK)

(12)

(13)

Specific heat

Cal/g℃

8×10-2

9×10-2

(J/kgK)

(335)

(377)

Specific resistivity

Ω-cm

8.6×10-5

5.3×10-5

Mechanical characteristics

Deflection strength

Kg/mm2

15

18

(N/m2)

(1.5×108)

(1.8×108)

Compressive strength

Kg/mm2

82

102

(N/m2)

(8×108)

(10×108)

Tensile strength

Kg/mm2

3.6

4.1

(N/m2)

(3.5×107)

(4×107)

Young’s modulus

Kg/mm2

1.2×104

1.6×104

(N/m2)

(1.2×1011)

(1.6×1011)

Vickers hardness

Hv

500 to 600

450 to 500

 

Temperature Characteristics

Reversible tempeerature coefficient

Temperature

-100℃ to -20℃

20℃ to 100℃

100℃ to 200℃

Sm2Co17 XG32 30 28 26 24 22

-0.030%/℃

-0.030%/℃

-0.035%/℃

SmCo5 24 22 20 18

-0.045

-0.045

-0.050

Reversible Temperature Change