Technical Requirement
Item
Common Graphite Electrode
High Power Graphite Electrode
Ultrahigh Power Graphite Electrode
Unit
nominal diameter
nominal diameter 300-500(mm)
75 ～ 130
150 ～ 200
250 ～ 300
400 ～ 500
Excellent Grade
Grade I
specific resistance ≤
electrode contact
μΩm
8.5
10.0
9.0
11.0
7 6.5
6.5 5.5
folding strength≥
MPa
9.8 12.7
7.8 12.7
6.4 12.7
9.8 14.0
10.0 15.0
elastic modulus≤
GPa
9.3 13.7
12.0 14.0
14.0 15.0
ash content≤
%
0.5
0.3
volume density≥
g/cm 3
1.58 1.63
1.52 1.63
1.52 1.68
1.60 1.70
1.65 1.70
thermal expansivity≤
10 -6 1/°C
2.9 3.0
2.9 3.2
2.2 2.4
1.4 1.6
Carbon additive
CHEMICAL PROPERTIES %
F.C min
ASH max
V.M max
S max
MOISTURE max
Graphite Scrap
98.5
1.0
0.05
97.0
2.0
0.10
Calcined petroleum coke
99.0
0.4
0.6
98.0
1.5
Carbon Sand
96.0
3.0
0.2
93.0
6.0
90.0
8.0
Carbon products such as Flake Graphite and Synthetic graphite powder etc.isavailable for supplying at customer,s requirement.
Other products as user's detail offer.
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