Item

Unit 

Nominal Diameter   

75-130

150-225

250-300

350-500

HG

FG

HG

FG

HG

FG

HG

FG

Resistivity        ≤

Electrode

μΩm

8.5

10.0

9.0

10.5

9.0

10.5

9.0

10.5

Joint

8.5

8.5

8.5

8.5

Breaking strength        ≥

Electrode

MPa

9.8

9.8

7.8

6.4

Joint

13.0

13.0

13.0

13.0

Elastic modulus         ≤ 

Electrode

GPa

9.3

9.3

9.3

9.3

Joint

14.0

14.0

14.0

14.0

Volume density        ≥

Electrode
Joint

g/cm³

1.58

1.52

1.52

1.52

1.63

1.63

1.68

1.68

Thermal expansion coefficient      ≤

Electrode

10-6/°C

2.9

2.9

2.9

2.9

Joint

2.7

2.7

2.8

2.8

Ash content          ≤ 

Electrode

%

0.5

0.5

0.5

0.5

Joint