Description
Graphite electrode, mainly from the domestic petroleum coke and imported needle coke, is widely used in electric arc furnace,ladle furnace, submerged arc electric furnace for the production of alloy steel, metal and nonmetallic materials.
Technical Quota of Graphite Electrodes
RP Specifications:Item | Unit | Norminal Diameter(mm) |
75~130 | 150~225 | 250~300 | 350~500 |
Electric Resistivity Max | Electrode | μΩ·m | 8.5 | 9.0 | 9.0 | 9.0 |
Nipples | 6.5 | 6.5 | 6.5 | 6.5 |
Flexural Strength Min | Electrode | MPa | 9.8 | 9.8 | 7.8 | 6.4 |
Nipples | 13.0 | 13.0 | 13.0 | 13.0 |
Elastic Modulus Max | Electrode | GPa | 9.3 | 9.3 | 9.3 | 9.3 |
Nipples | 14.0 | 14.0 | 14.0 | 14.0 |
Bulk Density Min | Electrode | g/cm³ | 1.58 | 1.52 | 1.52 | 1.52 |
Nipples | 1.68 | 1.68 | 1.68 | 1.68 |
C.T.E. Max(100ºC~600ºC) | Electrode | 10¯6 /ºC | 2.9 | 2.9 | 2.9 | 2.9 |
Nipples | 2.7 | 2.7 | 2.8 | 2.8 |
Ash Max | % | 0.5 | 0.5 | 0.5 | 0.5 |
HP Specifications:Item | Unit | Norminal Diameter(mm) |
200~400 | 450~500 | 550~600 |
Electric Resistivity Max | Electrode | μΩ·m | 6.8 | 7.5 | 7.0 |
Nipples | 5.5 | 5.5 | 5.0 |
Flexural Strength Min | Electrode | MPa | 10.5 | 9.8 | 10.0 |
Nipples | 14.0 | 14.0 | 16.0 |
Elastic Modulus Max | Electrode | GPa | 12.0 | 12.0 | 12.0 |
Nipples | 16.0 | 16.0 | 18.0 |
Bulk Density Min | Electrode | g/cm³ | 1.60 | 1.60 | 1.65 |
Nipples | 1.70 | 1.70 | 1.75 |
C.T.E. Max(100ºC~600ºC) | Electrode | 10¯6 /ºC | 2.4 | 2.4 | 2.4 |
Nipples | 2.2 | 2.2 | 2.2 |
Ash Max | % | 0.3 | 0.3 | 0.3 |
UHP Specifications:Item | Unit | Norminal Diameter(mm) |
300~400 | 450~500 | 550~600 |
Electric Resistivity Max | Electrode | μΩ·m | 6.2 | 6.3 | 5.8 |
Nipples | 4.5 | 4.5 | 4.0 |
Flexural Strength Min | Electrode | MPa | 11.5 | 11.5 | 11.0 |
Nipples | 20.0 | 20.0 | 22.0 |
Elastic Modulus Max | Electrode | GPa | 14.0 | 14.0 | 14.0 |
Nipples | 20.0 | 20.0 | 22.0 |
Bulk Density Min | Electrode | g/cm³ | 1.71 | 1.70 | 1.68 |
Nipples | 1.76 | 1.78 | 1.80 |
C.T.E. Max(100ºC~600ºC) | Electrode | 10¯6 /ºC | 1.5 | 1.5 | 1.5 |
Nipples | 1.4 | 1.4 | 1.3 |
Ash Max | % | 0.3 | 0.3 | 0.3 |
Current-Carrying Capacity of RP graphite electrodesNorminal diameter(mm) | Current-Carrying Capacity(A) | Current Density(A/cm²) |
75 | 1000~1400 | 22-31 |
100 | 1500~2400 | 19-30 |
130 | 2200~3400 | 17~26 |
150 | 3000~4500 | 16-25 |
200 | 5000~6900 | 15-21 |
250 | 7000~10000 | 14-20 |
300 | 10000~13000 | 14~18 |
350 | 13500~18000 | 14~18 |
400 | 18000~23500 | 14~18 |
450 | 22000~27000 | 13~17 |
500 | 25000~32000 | 13~16 |
550 | 30000~42000 | 13~16 |
600 | 40000~53000 | 13~16 |
Current-Carrying Capacity of HP graphite electrodesNorminal diameter(mm) | Current-Carrying Capacity(A) | Current Density(A/cm²) |
200 | 5500~9000 | 18-28 |
250 | 8000~13000 | 18-25 |
300 | 13000~17400 | 17~24 |
350 | 17400~24000 | 17~24 |
400 | 21000~31000 | 16~24 |
450 | 25000~40000 | 15~24 |
500 | 30000~48000 | 15~24 |
550 | 44000~58000 | 15~24 |
600 | 52000~67000 | 15~24 |