steel making graphite electrode RP HP UHP grade

RP Electrode: BulkDensity≥1.56g/cm3 SpecificResistivity≤8.5μm BendingStrength≥10.0MPa ElasticModulus≤9.3GPa ThermalExpansionCoefficient≤2.7x10-6/°C Ash≤0.5% Nipple: BulkDensity≥1.68g/cm3 SpecificResistivity≤7.0μm BendingStrength≥14.0MPa ElasticModulus≤13.7GPa ThermalExpansionCoefficient≤2.5x10-6/°C Ash≤0.5% HP Electrode: BulkDensity≥1.65g/cm3 SpecificResistivity≤6.5μm BendingStrength≥12.0MPa ElasticModulus≤10.0GPa ThermalExpansionCoefficient≤2.2x10-6/°C Ash≤0.3% Nipple: BulkDensity≥1.74g/cm3 SpecificResistivity≤5.5μm BendingStrength≥16.0MPa ElasticModulus≤14.0GPa ThermalExpansionCoefficient≤2.0x10-6/°C Ash≤0.3% UHP Electrode: BulkDensity≥1.68g/cm3 SpecificResistivity≤5.8μm BendingStrength≥16.0MPa ElasticModulus≤14.0GPa ThermalExpansionCoefficient≤1.9x10-6/°C Ash≤0.2% Nipple: BulkDensity≥1.76g/cm3 SpecificResistivity≤4.5μm BendingStrength≥18.0MPa ElasticModulus≤16.0GPa ThermalExpansionCoefficient≤1.4x10-6/°C Ash≤0.2%