Item

Unit

RP Grade
Dia 100-600mm

  IP Grade Dia 150-500mm

HP Grade
Dia

300-600mm

SHP Grade
Dia 300-600mm

UHP Grade
  Dia 350-600mm

 Electrode
Resistivity≤      

 Nipple

μΩM

8.5
7.5

7.5
7.0

6.5
6.0

6.0
5.5

5.5
4.5

 Electrode
Bending strength ≥ 

Nipple

MPa

9.8
13.0

10.0
13.0

10.0
14.0

10.0
16.0

11.0
16.0

 Electrode
Elastic Modulus ≤  

Nipple

GPa

9.3
14.0

12.0
14.0

12.0
16.0

14.0
18.0

14.0
18.0

  Electrode
Bulk Density ≥    

 Nipple

g/cm

1.56
1.69

1.62
1.70

1.63
1.72

1.64
1.72

1.65
1.72

Electrode
CTE ≤           

Nipple

100~600

2.9
2.8

2.7
2.5

2.2
2.0

2.2
1.6

1.5
1.4

 ASH≤ 

%

0.5

0.3

0.3

0.3

0.3