300-500 Mm Rp Graphite Electrode

We are a highly reliable firm, we are engaged in manufacturing and exporting of 300-500 mm RP Graphite Electrode in Shouguang, Shandong, China.

Electric resistivity : A 7.5-8.6
Bending strength: A A >=7.5
Elastic Modulus:<=9
Bulk density:1.54-1.62
Ash:<=0.3
CTE:A 2.20-2.60
Regular power graphite electrode is a graphite electrode with allowable current density lower than 17A/cm2.A RPA graphite electrodeA is mainly used in the ordinary power electric furnace for steelmaking,A silicon smelting and yellow phosphorusA refining etc.
PhysicalA andA ChemicalA IndexA ofA A HignA PowerA GraphiteA Electrode:
ItemA UnitHP
300i 500550i 700
ElectricA ResistivityA ElectrodeuIC.m5.5i 6.85.5i 7.0
Nipple4.0i 5.5
BendingA StrengthElectrodeMPaa Y10.0a Y8.5
Nipplea Y18.0
ModulusA ofA ElasticityElectrodeGPaa 13.0
Nipplea 15.0
BulkA DensityElectrodeg/cm31.62i 1.70
Nipple1.72i 1.80
AshA ContentElectrode%a 0.3
Nipple
TheA CoefficientA ofA ThermalA Expansion(CTE)Electrode10-6/a 1.80i 2.20
Nipple1.50i 1.80

HighA PowerA GraphiteA ElectrodeA CurrentA CarryingA Capacity
NorminalA DiameterHP
CurrentA CarryingA CapacityCurrentA Density
inchmmAA/cm2
i 1740017i 24
i 2400017i 24
i 3100016i 24
i 4000015i 24
i 4800015i 24
i 5300014i 22
i 5800013i 21
i 7200012i 19
32800i i

ToleranceA ofA GraphiteA ElectrodeA DiameterA andA Lengthi mm)A
NominalA DiameterActuralA diameterLength
inmmmaxminBlackA surfaceA min
22991800/2000
23491800/2000/2200
34001800/2000/2200
44511800/2000/2200
55022000/2200/2400
65532000/2200/2400/2700
76042200/2400/2700/3000
07072200/2400/2700/3000
28092200/2400/2700/3000

PermissibleA DeviationA ofA GraphiteA ElectrodeA LengthA (mm)
NominalA LengthStandardA DeviationShortA LengthA 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