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Graphite Electrode
  Graphite Electrodes are widely used in electric arc furnace and ladle refining furnace for steel making and in electric smelting furnace for producing industrial silicon, yellow phosphorus, corundum and so on.
 Specifications of Regular Power Graphite Electrodes
Item Unit Nominal Diameter (mm)
75-130 150-225 250-300 350-500
Specific Resistance
Max
Electrode μO · m 8.5 9.0 9.0 9.5
Nipple 8.5 8.5 8.5 8.5
Transverse strength
Min
Electrode MPa 9.8 9.8 7.8 6.4
Nipple 13.0 13.0 13.0 13.0
Elastic modulus
Max
Electrode GPa 9.3 9.3 9.3 9.3
Nipple 14.0 14.0 14.0 14.0
Bulk density
Min
Electrode g/cm 3 1.58 1.52 1.52 1.52
Nipple 1.63 1.63 1.68 1.68
C.T.E
Max
Electrode 10 -6 /°C 2.9 2.9 2.9 2.9
Nipple 2.7 2.7 2.8 2.8
Ash
Max
Electrode % 0.5 0.5 0.5 0.5
Nipple

 Specifications of High Density Graphite Electrodes
Item Unit Nominal Diameter (mm)
75-200 225-300 350-500
Specific Resistance
Max
Electrode μO · m 8.0 8.0 8.0
Nipple 7.5 7.5 7.5
Transverse strength
Min
Electrode MPa 9.8 9.8 7.8
Nipple 13.0 13.0 13.0
Elastic modulus
Max
Electrode GPa 12.0 12.0 12.0
Nipple 14.0 14.0 14.0
Bulk density
Min
Electrode g/cm 3 1.58 1.58 1.56
Nipple 1.68 1.68 1.68
C.T.E
Max
Electrode 10 -6 /°C 2.7 2.7 2.7
Nipple 2.5 2.5 2.5
Ash
Max
Electrode % 0.3 0.3 0.3
Nipple

 Specifications of High Power Graphite Electrodes
Item Unit Nominal Diameter (mm)
200-400 400-500
Specific Resistance
Max
Electrode μO · m 7.0 7.5
Nipple 6.5 6.5
Transverse strength
Min
Electrode MPa 10.5 9.8
Nipple 14.0 14.0
Elastic modulus
Max
Electrode GPa 12.0 12.0
Nipple 16.0 16.0
Bulk density
Min
Electrode g/cm 3 1.60 1.60
Nipple 1.70 1.70
C.T.E
Max
Electrode 10 -6 /°C 2.4 2.4
Nipple 2.2 2.2
Ash
Max
Electrode % 0.3 0.3
Nipple

 Sizes of Graphite Electrodes
Nominal diameter Actual diameter Actual length
mm inch Max Min Rough spot Length Short length
75 3 77 73 72 1000 ±50 -255
100 4 102 99 97 1200
130 5 131 128 126      
150 6 154 151 148
1650

1800

±100

-275
175 7 179 176 173
200 8 204 200 198
225 9 230 226 223
250 10 256 251 249
300 12 307 302 300
350 14 357 352 350
400 16 409 403 401
450 18 460 454 452
500 20 510 505 503

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