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550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode
  • 550-600mm UHP graphite electrode

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Electric resistivity :  4.5-6.0

Bending strength:   >=10.0

Elastic Modulus:    <=14

Bulk density:       1.68-1.74

Ash:              <=0.3

CTE:              1.10-1.50


Ultra high power graphite electrode is a graphite electrode with allowable current density greater than 25A/cm2 . UHP graphite electrode mainly used in ultra-high power steelmaking electric arc furnace.


Physical and Chemical Index of Ultra high Power  Graphite Electrode
Item UnitUHP
300∼500550∼600700∼800
Electric Resistivity ElectrodeuΩ.m4.6∼6.24.5∼6.04.5∼5.8
Nipple3.5∼5.03.4∼4.53.3∼4.3
Bending StrengthElectrodeMPa≧10.5≧10.0≧10.0
Nipple≧20.0≧22.0≧23.0
Modulus of ElasticityElectrodeGPa≦14.0≦14.0≦14.0
Nipple≦20.0≦22.0≦22.0
Bulk DensityElectrodeG/cm31.66∼1.731.68∼1.74
Nipple1.75∼1.821.78∼1.85
Ash ContentElectrode%≦0.3
Nipple
The Coefficient of Thermal Expansion(CTE)Electrode10-6/℃1.20∼1.501.10∼1.50
Nipple1.10∼1.401.00∼1.30





UHP Graphite Electrode Current Carrying Capacity
Norminal DiameterUHP
Current Carrying CapacityCurrent Density
inchmmAA/cm2
1230015000∼2200020∼30
1435020000∼3000020∼30
1640025000∼4000019∼30
1845032000∼4500019∼27
2050038000∼5500018∼27
2255045000∼6500018∼27
2460050000∼7500018∼26
2870070000∼12000018∼25
32800



Tolerance of Graphite Electrode Diameter and Length 
Tolerance of Graphite Electrode Diameter and Length(mm) 
Nominal DiameterActural diameterLength
inmmmaxminBlack surface min
123003073022991800/2000
143503583523491800/2000/2200
164004094034001800/2000/2200
184504604544511800/2000/2200
205005115055022000/2200/2400
225505625565532000/2200/2400/2700
246006136076042200/2400/2700/3000
287007147107072200/2400/2700/3000
298008168128092200/2400/2700/3000
Permissible Deviation of Graphite Electrode Length (mm)
Nominal LengthStandard DeviationShort Length Deviation
maxminmaxmin
1800+100-100-100-275
2000+100-100-100-275
2200+100-100-100-275
2400+100-100-100-275
2700+200-150-150-275
3000+200-150-150-300



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