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Article Index
Page 2 of 5
- How to Choose the graphite grade? You may according to the below parameter to choose or contact us.
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Item
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Unit
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Nominal Diameter
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UHP
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HP
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RP
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Φ300-400
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≥Φ450
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Φ250-400
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≥Φ450
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Φ250-400
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Φ450-600
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Electric Resistivity
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electrode
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μΩ·m
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≤5.0
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≤5.5
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≤6.0
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≤6.5
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≤8.5
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≤9.0
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Nipple
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≤4.0
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≤4.5
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≤5.5
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Transverse Strength
|
electrode
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MPa
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≥15.0
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≥10.5
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≥8.0
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≥7.0
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Nipple
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≥24.0
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≥20.0
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≥16.0
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Young’s Modulus
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electrode
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GPa
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≤14.0
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≤12.0
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≤9.3
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Nipple
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≤18.0
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≤16.0
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≤14.0
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Bulk Density
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electrode
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g/cm3
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≥1.68
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≥1.65
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≥1.54
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Nipple
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≥1.76
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≥1.74
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≥1.70
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Coefficient of thermal expansion
|
electrode
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10-6/℃
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≤1.5
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≤2.0
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≤2.5
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Nipple
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≤1.2
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≤1.6
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≤2.0
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Ash
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%
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≤0.2
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≤0.2
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≤0.2
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