GRAPHITE
ELECTRODES
Regular Power graphite electrode physics and
chemistry index
Item
|
|
Unit
|
Norminal diameter (mm) |
|
|
150 - 300 |
350 - 500 |
|||
|
Resistivity
max |
Electrode |
μΩm |
9.0 |
9.0 |
|
Nipple |
8.5 |
8.5 |
||
|
Flexible
strength min |
Electrode
|
Mpa
|
9.8 |
7.8 |
|
Nipple |
13.0 |
13.0 |
||
|
Modulus
elasticity max |
Electrode |
Gpa |
9.3 |
9.3 |
|
Nipple |
14.0 |
14.0 |
||
|
Bulk
density min |
Electrode |
g/cm3 |
1.52 |
1.52 |
|
Nipple |
1.68 |
1.68 |
||
|
Ash content max |
Electrode |
|
0.5% |
0.5% |
|
Nipple |
0.5% |
0.5% |
||
Current-carrying Capacities of Regular Power Graphite
Electrodes
|
Norminal
Diameter(mm) |
Capacities (A) |
Current density
A/cm2 |
|
200 |
5000 -- 6900 |
15 - 21 |
|
250 |
7000 -- 10000 |
14 - 20 |
|
300 |
10000 -- 13000 |
14 - 18 |
|
350 |
13500 -- 18000 |
14 - 18 |
|
400 |
18000 -- 23500 |
14 - 18 |
|
450 |
22000 -- 27000 |
13 - 17 |
|
500 |
25000 -- 32000 |
13 - 16 |
High power graphite electrode physics and chemistry index
Item
|
|
Unit
|
Norminal diameter (mm) |
|
|
100 - 400 |
450 - 500 |
|||
|
Resistivity
max |
Electrode |
μΩm |
7.0 |
7.5 |
|
Nipple |
6.5 |
6.5 |
||
|
Flexible
strength min |
Electrode
|
Mpa
|
10.5 |
9.8 |
|
Nipple |
14.0 |
14.0 |
||
|
Modulus
elasticity max |
Electrode |
Gpa |
12.0 |
12.0 |
|
Nipple |
16.0 |
16.0 |
||
|
Bulk
density min |
Electrode |
g/cm3 |
1.60 |
1.60 |
|
Nipple |
1.70 |
1.70 |
||
|
Ash content max |
Electrode |
|
0.3% |
0.3% |
|
Nipple |
0.3% |
0.3% |
||
Current-carrying Capacities of High Power Graphite Electrodes
|
Norminal
Diameter(mm) |
Capacities (A) |
Current density
A/cm2 |
|
200 |
5500--9000 |
18 - 25 |
|
225 |
6500--10000 |
18 - 25 |
|
250 |
8000--13000 |
18 - 25 |
|
300 |
13000--17400 |
17 - 24 |
|
350 |
17400--24000 |
17 - 24 |
|
400 |
21000--31000 |
16 - 24 |
|
450 |
25000--40000 |
15 - 24 |
|
500 |
30000--48000 |
15 - 24 |
Ultra High Power graphite electrode physics
and chemistry index
Item
|
|
Unit
|
Norminal diameter (mm) 300 - 600 |
|
Resistivity
max |
Electrode |
μΩm |
6.5 |
|
Nipple |
5.5 |
||
|
Flexible
strength min |
Electrode
|
Mpa
|
10.0 |
|
Nipple |
16.0 |
||
|
Modulus
elasticity max |
Electrode |
Gpa |
14.0 |
|
Nipple |
18.0 |
||
|
Bulk
density min |
Electrode |
g/cm3 |
1.65 |
|
Nipple |
1.70 |
||
|
Ash content max |
Electrode |
|
0.3% |
|
Nipple |
0.3% |
Current-carrying Capacity of Ultra High Power Graphite Electrodes
|
Norminal
Diameter(mm) |
Capacities (A) |
Current density
A/cm2 |
|
400 |
25000 -- 40000 |
19 - 30 |
|
450 |
32000 -- 45000 |
19 - 27 |
|
500 |
38000 -- 55000 |
18 - 27 |
|
550 |
48000 -- 66000 |
20 - 28 |
|
600 |
55000 -- 76000 |
19 - 27 |
GRAPHITE
ELECTRODES
Dimension of Tapered Nipple ( 3TPI )
|
Diameter |
Nipple
(mm) |
Socket
(mm) |
Pitch
(mm) |
||||||||||
|
Inch
|
mm |
D |
L |
d2 |
l |
d1 |
H |
||||||
|
10 |
250 |
155.57 |
0-0.5 |
220.00 |
0---1 |
103.80 |
0---3 |
10 |
147.14 | ||||