Graphite
Electrode
Applications
Electrodes in electric arc furnace and
ladle refining furnace for steel making.
Electrodes in electric smelting furnace
for producing industrial silicon, yellow phosphorus, corundum and so on.
Programmable
properties
Good electrical conductivity
High resistance to thermal shock
High mechanical strength
Grades
Regular power (RP)
High power (HP)
Ultra high power (UHP)
Typical Sizes
and Specifications
|
Specifications
|
Unit
|
Regular- power
|
|
Ф75-150
|
Ф200-400
|
Ф450-600
|
|
Specific
Resistance
|
(≤)
|
Electrode
|
μΩ.m
|
8.5
|
8.5
|
9
|
|
Nipple
|
7
|
6.5
|
6.5
|
|
Bending
Strength
|
(≥)
|
Electrode
|
MPa
|
8
|
8.5
|
8
|
|
Nipple
|
17
|
17
|
17
|
|
Elastic
Modulus
|
(≤)
|
Electrode
|
GPa
|
9.3
|
9.3
|
9.3
|
|
Nipple
|
14
|
14
|
14
|
|
Bulk Density
|
(≥)
|
Electrode
|
g/cm3
|
1.56
|
1.54
|
1.54
|
|
Nipple
|
1.7
|
1.7
|
1.7
|
|
C.T.E.
(100-600℃)
|
(≤)
|
Electrode
|
10-6 /℃
|
2.9
|
2.9
|
2.9
|
|
Nipple
|
2.7
|
2.8
|
2.8
|
|
Ash
|
(≤)
|
Electrode
Nipple
|
%
|
0.5
|
0.5
|
0.5
|
Specification
|
Item
|
Unit
|
Norminal
Diameter
|
|
UHP
|
HP
|
RP
|
|
≤Φ400
|
≥Φ450
|
≤Φ400
|
≥Φ450
|
≤Φ300
|
≥Φ350
|
|
Resistance
|
Electrode
|
μΩ?m
|
≤5.5
|
≤6.5
|
≤8.5
|
|
Nipple
|
≤4.5
|
≤5.5
|
≤6.5
|
|
Bending
Strength
|
Electrode
|
MPa
|
≥11.0
|
≥10.5
|
≥9.8
|
≥8.5
|
≥7.0
|
|
Nipple
|
≥20.0
|
≥16.0
|
≥15.0
|
|
Elastic
Modulus
|
Electrode
|
GPa
|
≤14.0
|
≤12.0
|
≤9.3
|
|
Nipple
|
≤18.0
|
≤16.0
|
≤14.0
|
|
Bulk
Density
|
Electrode
|
g/cm3
|
≥1.66
|
≥1.67
|
≥1.62
|
1.60
|
≥1.53
|
≥1.52
|
|
Nipple
|
≥1.75
|
≥1.73
|
≥1.69
|
|
CTE.
|
Electrode
|
10-6/?C
|
≤1.5
|
≤2.4
|
≤2.9
|
|
Nipple
|
≤1.4
|
≤2.2
|
≤2.8
|
|
Ash
|
%
|
≤0.3
|
≤0.3
|
≤0.5
|
