Graphite electrode raw materials use the domestic petroleum coke and pitch coke and imported Japanese needle coke .HP grade graphite electrode contain 30% imported needle coke. UHP graphite electrode contain more than 80% imported needle coke. They are widely used in electric arc furnace(EAF), ladle furnace(LF) for the production of alloy steel, metal and nonmetallic materials. They are characterized by low resistance, good electric and thermal conductivity, high resistance to oxidation and thermal shock, high mechanical strength, etc
Graphite Electrode Technical data |
Specification | RP | HP | UHP |
φ200-300 | φ350-600 | φ200-400 | φ450-600 | φ250-400 | φ450-600 |
Electrical
Resistivity μ Ω.m ≤ | Electrode | 8.5 | 6.5 | 5.5 |
Nipple | 6.5 | 5.5 | 4.5 |
Bulk Density g/cm3 ≥ | Electrode | 1.53 | 1.52 | 1.62 | 1.6 | 1.67 | 1.66 |
Nipple | 1.69 | 1.73 | 1.75 |
Flexural Strength Mpa ≥
| Electrode | 8.5 | 7.0 | 10.5 | 9.8 | 11.0 |
Nipple | 15 | 16.0 | 20 |
Elastic Modulus Gpa ≤
| Electrode | 9.3 | 12.0 | 14.0 |
Nipple | 14 | 16.0 | 18.0 |
Ash % ≤ | Electrode | 0.5 | 0.3 | 0.3 |
Nipple | 0.5 | 0.3 | 0.3 |
CTE(100℃-600℃) 10 -6/℃ ≤ | Electrode | 2.9 | 2.4 | 1.5 |
Nipple | 2.7 | 2.2 | 1.4 |
Nominal Diameter | Nipple | Socket Plug | Pitch |
D | L | d2 | 1 | d1 | H |
225 | 139.70 | 0-0.50 | 203.20 | 0-1 | 90.73 | 0-5 | <10 | 131.27 | +0.5 | 107.6 | +70 | 3TPI 8.47 |
250 | 155.57 | 220.00 | 103.80 | 147.14 | 116.00 |
300 | 177.16 | 270.90 | 116.90 | 168.73 | 141.50 |
350 | 215.90 | 304.80 | 150.00 | 207.47 | 158.40 |
400 | 215.90 | 304.80 | 150.00 | 207.47 | 158.40 |
400 | 241.30 | 338.70 | 169.80 | 232.87 | 175.30 |
450 | 241.30 | 338.70 | 169.80 | 232.87 | 175.30 |
450 | 273.05 | 355.60 | 198.70 | 264.62 | 183.80 |
500 | 273.05 | 355.60 | 198.70 | 264.62 | 183.80 |
500 | 298.45 | 372.60 | 221.30 | 290.02 | 192.20 |
550 | 298.45 | 372.60 | 221.30 | 290.02 | 192.20 |
75 | 46.04 | 0-0.50 | 76.20 | 0-1 | 20.80 | 0-5 | <7 | 39.72 | +0.5 | 44.10 | +70 | 4TPI 6.35 |
100 | 69.85 | 101.60 | 40.30 | 63.53 | 56.80 |
130 | 79.38 | 127.00 | 45.60 | 73.06 | 69.50 |
150 | 92.08 | 139.70 | 56.20 | 85.76 | 75.90 |
200 | 122.24 | 177.80 | 80.00 | 115.92 | 94.90 |
225 | 139.70 | 177.80 | 97.46 | 133.38 | 94.90 |
250 | 152.40 | 190.50 | 108.00 | 146.08 | 101.30 |
300 | 177.80 | 215.90 | 129.20 | 171.48 | 114.00 |
350 | 203.20 | 254.00 | 148.20 | 196.88 | 133.00 |
400 | 222.25 | 304.80 | 158.80 | 215.93 | 158.40 |
400 | 222.25 | 355.60 | 150.00 | 215.93 | 183.80 |
450 | 241.30 | 304.80 | 177.90 | 234.98 | 158.40 |
450 | 241.30 | 355.60 | 169.42 | 234.98 | 183.80 |
500 | 269.88 | 355.60 | 198.00 | 263.56 | 183.80 |
500 | 269.88 | 457.20 | 181.08 | 263.56 | 234.60 |
550 | 298.45 | 355.60 | 226.58 | 292.13 | 183.80 |
550 | 298.45 | 457.20 | 209.58 | 292.13 | 234.60 |
600 | 317.50 | 355.60 | 245.63 | 311.18 | 183.80 |
600 | 317.50 | 457.20 | 228.70 | 311.18 | 234.60 |
650 | 355.60 | 457.20 | 226.79 | 349.28 | 234.60 |
650 | 355.60 | 558.80 | 249.86 | 349.28 | 285.40 |
700 | 374.65 | 457.20 | 285.84 | 368.33 | 234.60 |
700 | 374.65 | 558.80 | 268.91 | 368.33 | 285.40 |
750 | 406.40 | 584.20 | 296.42 | 400.08 | 298.10 |
750 | 406.40 | 609.60 | 292.19 | 400.08 | 310.80 |
800 | 431.80 | 635.00 | 313.36 | 425.48 | 323.50 |
800 | 431.80 | 685.80 | 304.89 | 425.48 | 348.90 |
