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RP graphite electrode | Unit | Nominal Diameter(mm) | ||||||||||||
75-200 | 250-300 | 400-500 | ||||||||||||
Electric Resistivity | A | B | A | B | A | B | ||||||||
Electrode | μΩ·m | ≤8.0 | ≤9.0 | ≤8.0 | ≤9.0 | ≤8.0 | ≤9.0 | |||||||
Nipple | ≤7.5 | ≤7.5 | ≤7.5 | |||||||||||
Bending strength | Electrode | MPa | ≥10.0 | ≥10.0 | ≥8.0 | |||||||||
Nipple | ≥15.0 | ≥15.0 | ≥15.0 | |||||||||||
Elestic modulus | Electrode | GPa | ≤12.0 | ≤12.0 | ≤12.0 | |||||||||
Nipple | ≤14.0 | ≤14.0 | ≤14.0 | |||||||||||
Bulk dentisy | Electrode | g/cm³ | ≥1.58 | ≥1.58 | ≥1.58 | |||||||||
Nipple | ≥1.68 | ≥1.68 | ≥1.68 | |||||||||||
CTE | Electrode | X10-6/℃ | ≤2.7 | ≤2.7 | ≤2.7 | |||||||||
Nipple | ≤2.5 | ≤2.5 | ≤2.5 | |||||||||||
Ash | % | ≤0.3 | ≤0.3 | ≤0.3 | ||||||||||



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