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Special application(high-grade steel)

Machined graphite components
Material Characteristics Chart

Grade

Density

Hardness
(Shore)

Bending
strenght

Yung's
mouldulus

Electrical
Resistance

Themal
Conductivity

Themal
Expansion

Porosity
(open)

Grain
Size

Permeability
(air at 20°C)

Ash Value

g/cm3

H.S.

N/mm2

Km/mm2

uΩm

W/m-1k-1

x10-6/k-1

%

um

x10-2cm2/sec

ppm

EX-60

1.80

62

80

12.1

13

110

5.0

14

10

16

200

R-4550

1.83

65

60

11.5

13

100

4.0

10

10

4

200

R-4340H

1.74

60

50

16.0

40

90

5.0

15

15

15

200

G-347

1.85

58

49

10.8

11

116

5.5

9

10

12

200

G-348

1.92

68

63.7

12.3

10

128

5.5

8

7

10

200


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