UHP Graphite Electrode Diameter: 300-700mm Features: Low resistivity, good conductivity and thermal conductivity, good oxidation resistance, strong resistance to thermal and mechanical vibrations, high mechanical strength, and high machining density.
UHP Graphite Electrode Physical And Chemical Index | |||||
ltem | unit | 300~500 | 550~600 | 700~800 | |
Electric | Electrode | μΩ.m | 4.6~6.2 | 4.5~6.0 | 4.5~5.8 |
Nipple | 3.5~5.0 | 3.4~4.5 | 3.3~4.3 | ||
Bending strength | Electrode | MPa | ≥10.5 | ≥10 | ≥10 |
Nipple | ≥20.0 | ≥22.0 | ≥23.0 | ||
Elastic modulus | Electrode | GPa | ≤14.0 | ≤14.0 | ≤14.0 |
Nipple | ≤20.0 | ≤22.0 | ≤22.0 | ||
Bulk density | Electrode | g/cm³ | 1.66~1.73 | 1.68~1.74 | |
Nipple | 1.75~1.82 | 1.78~1.85 | |||
Ash | Electrode | % | ≤3% | ||
Nipple | |||||
CTE（100-600）℃ | Electrode | 10-6/℃ | 1.20~1.50 | 1.10~1.50 | |
Nipple | 1.10~1.40 | 1.00~1.30 | |||
UHP Graphite Electrode Recommended Current Carrying Capacity | |||
Nominal Diameter(mm) | Current Carrying Capacity | Current Density | |
in | mm | A | A/cm2 |
12 | 300 | 15000~22000 | 20~30 |
14 | 350 | 20000~30000 | 20~30 |
16 | 400 | 25000~40000 | 19~30 |
18 | 450 | 32000~45000 | 19~27 |
20 | 500 | 38000~55000 | 18~27 |
22 | 550 | 45000~65000 | 18~27 |
24 | 600 | 50000~75000 | 18~26 |
28 | 700 | 70000~120000 | 18~25 |
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