Graphitized cathode
carbon blocks

  
 

Designation
　
Grade I
Grade II
Ash content
not more than
0.4
0.5
Specific resistance
13
15
Electrolytic expansion ratio
0.1
0.2
Bulk density
not less than
1.56
1.54
Real density
2.19
2.18
Compressive strength
20
18
Thermal conductivity
100
80