GRAPHITE ELECTRODE
SANGRAF(USA) Graphite electrodes are mainly used in Electric Arc Furnace (EAF) steel production. They are also used to refine steel in ladle furnaces and in other smelting processes. Graphite electrodes are presently the only products available that have the high levels of electrical conductivity and the capability of sustaining the extremely high levels of heat generated in this demanding environment
Typical Physical Properties for UHP Grade Electrodes
|
Specification |
Unit |
Nominal Diameter of Electrode |
||
|
UHP |
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|
Φ300-Φ500 |
Φ550-Φ700 |
|||
|
Electrical Resistivity |
Electrode |
μΩ.m |
4.8 ~ 6.0 |
4.5 ~ 6.0 |
|
Nipple |
3.3 ~ 4.5 |
3.0 ~ 4.2 |
||
|
Bending Strength |
Electrode |
Mpa |
9.0 ~ 15.0 |
10.0 ~ 15.0 |
|
Nipple |
20.0 ~ 28.0 |
22.0 ~ 30.0 |
||
|
Young’s Modulus |
Electrode |
Gpa |
9.0 ~ 13.0 |
10.0 ~ 14.0 |
|
Nipple |
12.0 ~ 20.0 |
14.0 ~ 22.0 |
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|
Bulk Density |
Electrode |
g/cm3 |
1.65 ~ 1.75 |
1.67 ~ 1.77 |
|
Nipple |
1.75 ~ 1.82 |
1.78 ~ 1.85 |
||
|
CTE (100oC-600oC) |
Electrode |
X10-6 /oC |
1.1 ~ 1.5 |
1.1 ~ 1.4 |
|
Nipple |
0.8 ~ 1.3 |
0.81 ~ 1.2 |
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|
Ash Content (<) |
% |
<0.3 |
<0.3 |
|
Typical Physical Properties for HP Grade Electrodes
|
Specification |
Unit |
Nominal Diameter of Electrode |
|
|
HP |
|||
|
Φ250-Φ700 |
|||
|
Electrical Resistivity |
Electrode |
μΩ.m |
5.8 ~ 7.0 |
|
Nipple |
4.0 ~ 5.5 |
||
|
Bending Strength |
Electrode |
Mpa |
9.0 ~ 15.0 |
|
Nipple |
16.0 ~ 24.0 |
||
|
Young’s Modulus |
Electrode |
Gpa |
9.0 ~ 14.0 |
|
Nipple |
12.0 ~ 20.0 |
||
|
Bulk Density |
Electrode |
g/cm3 |
1.62 ~ 1.73 |
|
Nipple |
1.74 ~ 1.8 |
||
|
CTE (100 0C-6000C) |
Electrode |
x10-6/0C |
1.6 ~ 2.0 |
|
Nipple |
1.0 ~ 1.8 |
||
|
Ash Content (<) |
% |
<0.3 |
|
Typical Current Carrying Capacity
|
Nominal Diameter |
Actual Diameter |
Nominal Length |
|||
|
in |
mm |
min |
max |
in |
mm |
|
14 |
350 |
353 |
357 |
60/72 |
1600/1800 |
|
16 |
400 |
404 |
408 |
72/79 |
1800/2000 |
|
18 |
450 |
455 |
459 |
72/79 |
1800/2000 |
|
20 |
500 |
506 |
510 |
72/79 |
1800/2000 |
|
22 |
550 |
556 |
562 |
84/96 |
2100/2400 |
|
24 |
600 |
607 |
613 |
96/110 |
2400/2800 |
|
26 |
650 |
657 |
663 |
96/110 |
2400/2800 |
|
28 |
700 |
708 |
714 |
96/110 |
2400/2800 |
|
30 |
750 |
759 |
765 |
96/110 |
2400/2800 |
|
32 |
800 |
810 |
816 |
96/110 |
2400/2800 |
Typical Current Carrying Capacity
