Specifications for RP.
1. NP/RP graphite electrode:
Dia 75-130mm, Resistivity max 8.5, Bending strength min 9.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/C, Bulk density min 1.58g/cm3, ASH max 0.5%.
Dia 150-200mm, Resistivity max9.0, Bending strength min 9.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/C, Bulk density min 1.52g/cm3, ASH max 0.5%.
Dia250-350mm, Resistivity max 9.0, Bending strength min 7.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/C, Bulk density min 1.52g/cm3, ASH max 0.5%.
Dia 400-500mm, Resistivity max9.0, Bending strength min 6.4 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/C, Bulk density min 1.52g/cm3, ASH max 0.5%.
Nipple: Resistivity 8.5 max, Bending strength12.7 mpa min, Elastic modulus13.7gpa max, CTE max 1.6-2.2 x 10-6/C, Bulk density min1.63-1.68g/cm3, ASH max 0.5%.
Remarks:
1. CTE and ash contents are only for reference.
2. The actual technical data is better than the above-mentioned standard.