Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:0 m.t.
Supply Capability:100000 m.t./month
| Packaging Details: | standard export wooden backage |
| Delivery Detail: | 15-30 days after confirming the contract |
Product Description
Graphite electrode is made from the domestic first petroleum coke and high quality needle coke
and widely used in the electric arc furnaces for production of alloy steels, metal and other
nonmetallic materials, etc. The graphite electrodes include regular power, high power, super high power, ultra high power and square electrode. The range of diameters covers from 200mm to
700mm. Our products own the following characteristics: low electric resistance, good electric and
thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy.
Physical and chemical index
Item | Unit | Nominal Diameter(mm) | |||
YB/T4088-2000 Industry Standard | Typical Values | ||||
300-400 | 450-550 | 350-550 | |||
Resistance | Electrode | ohm | ≤6.2 | ≤6.5 | 4.6-6.2 |
Nipple | ≤5.5 | ≤5.5 | 3.5-4.5 | ||
Bending Strength | Electrode | Mpa | ≥10.5 | ≥10.0 | ≥11.0 |
Nipple | ≥16.0 | ≥16.0 | ≥18.0 | ||
Elastic Modulus | Electrode | Gpa | ≤14.0 | ≤14.0 | ≤13.0 |
Nipple | ≤18.0 | ≤18.0 | ≤17.0 | ||
Density | Electrode | g/cm3 | ≥1.65 | ≥1.64 | 1.65-1.72 |
Nipple | ≥1.72 | ≥1.70 | 1.75-1.82 | ||
Ash content | Electrode | % | ≤0.3 | ≤0.3 | ≤0.3 |
Nipple | |||||
CTE(100-600) | Electrode | 10-6/C | ≤1.5 | ≤1.5 | 1.20-1.40 |
Nipple | ≤1.4 | ≤1.4 | 1.10-1.30 | ||
Recommended current carrying capacity
Nominal Diameter | YB/T4088-2000 Industry Standard | Typical Values | |||
Current Carrying Capacity | Currant Density | Electrical Arc Furnace | |||
Current Carrying | Current Density | ||||
in | mm | A | A/cm2 | A | A/cm2 |
14 | 350 | 20000-30000 | 20-30 | 24000-33000 | 25-34 |
16 | 400 | 25000-40000 | 19-30 | 31000-44000 | 24-34 |
18 | 450 | 32000-45000 | 19-27 | 36000-49000 | 22-30 |
20 | 500 | 38000-55000 | 18-27 | 42000-60000 | 21-30 |
22 | 550 | 42000-62000 | 17-25 | 50000-70000 | 20-28 |
Do you know our material of the graphite electrode?
The regular power graphite electrode is made from petroleum coke with a little pitch, which meets
the state standards YB/T4088-2000
The high power graphite electrode is made form 70% petroleum coke and 30% imported needle
coke, which meets the state standards YB/T4089-2000
The ultra high power graphite electrode is made form 100% imported needle coke, which meets
the state standards YB/T 4090-200
Note: Needle coke is one kinds of very important material to produce the high grade graphite
electrode,which is rapid development in carbon graphite industry. The needle coke own the
following characteristics: low electric resistance, low dilatation coefficient, good electric and
thermal conductivity,high oxidation resistance, greater resistance to thermal and mechanical
shock, high mechanical strength, high machining accuracy, low consume.
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