Graphite Electrode

1. Physical and chemical index
Item unit Nominal Diameter(mm)
YB/T4088-2000 Typical Values
Industry Standard
75-130 150-225 250-300 350-550 75-130 150-225 250-300 300-550
Electric Resistivity Electrode μΩ·m ≤9.0 ≤9.0 ≤9.0 ≤9.0 ≤8.0 ≤8.5 ≤8.5 ≤9.0
Nipple ≤8.5 ≤8.5 ≤8.5 ≤8.5 ≤6.5 ≤6.8 ≤7.0 ≤7.0
Bending strength Electrode Mpa ≥9.8 ≥9.8 ≥7.8 ≥6.4 ≥9.8 ≥7.8 ≥7.8 ≥8.0
Nipple ≥13.0 ≥13.0 ≥13.0 ≥13.0 ≥13 ≥13.0 ≥13.0 ≥15.0
Elastic modulus Electrode Gpa ≤9.3 ≤9.3 ≤9.3 ≤9.3 ≤9.3 ≤9.3 ≤9.3 ≤9.0
Nipple ≤14.0 ≤14.0 ≤14.0 ≤14.0 ≤14.0 ≤14.0 ≤14.0 ≤13.0
Bulk density Electrode g/cm3 ≥1.58 ≥1.52 ≥1.52 ≥1.52 ≥1.60 ≥1.56 ≥1.56 ≥1.55
Nipple ≥1.63 ≥1.63 ≥1.68 ≥1.68 ≥1.70 ≥1.72 ≥1.72 ≥1.70
Ash Electrode ％ ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.4 ≤0.4
≤0.4 ≤0.4
Nipple
CTE （100-600）℃ Electrode 10-6/℃ ≤2.9 ≤2.9 ≤2.9 ≤2.9 ≤2.8 ≤2.8 ≤2.8 ≤2.7
Nipple ≤2.7 ≤2.7 ≤2.8 ≤2.8 ≤2.6 ≤2.6 ≤2.6 ≤2.5