UHP GRAPHITE ELECTRODE

UHP GRAPHITE ELECTRODE

• High resistance to oxidation and thermal shock.

• High mechanical strength, low electrical resistance.

• High machining accuracy, good surface finishing.

• Withstand large currents, high discharge rate.

• Good dimension stability, not easy to deform.

• Resistant to cracking & spalling

Category:

Description

UHP Graphite Electrode: It is a high-temperature-resistant graphite conductive material made from petroleum coke and needle coke as raw materials, with coal tar pitch as the binder. It is produced through multiple processes such as calcination, batching, mixing, molding, firing, impregnation, graphitization, and mechanical processing.
It mainly generates high temperature by releasing an electric arc at the end and is a core consumable in electric arc furnaces and LF refining furnaces for steelmaking. The current passes through the graphite electrode and is conducted into the furnace, with the electric arc temperature reaching up to 3000℃, melting scrap steel and smelting molten steel. Our company’s UHP graphite electrode features low loss and resistance to thermal shock. It is the preferred choice for large electric arc furnaces and is also the mainstream selection in current steel mills.

  • Electric Arc Furnace (EAF) short-process steelmaking (primary application)
  • LF ladle refining furnace, for temperature rise, composition adjustment, and purification of molten steel
  • Mineral furnace for smelting ferrosilicon, ferromanganese, and other ferroalloys, and for copper and aluminum smelting

 

Specifications
mm		 Bulk Density
g/m³		 Specific Resistance
μΩm		 Flexural Strength
Mpa		 C·T·E(100-600°C)
10^-6/°C		 Elastic Modulus
Gpa
Electrode Pin Electrode Pin Electrode Pin Electrode Pin Electrode Pin
RP Φ200-Φ450 1.54~1.62 1.73~1.78 7.0~8.8 4.2~5.5 7.5~95 17~22 2.0~2.5 1.7~2.0 6.5~9.0 10~16
Φ500-Φ800 7.5~9.9 6.5~8.5
HP Φ200-Φ450 1.65~1.73 1.77~1.82 6.0~6.9 3.4~4.5 10.5~15.5 21~26 1.6~1.9 1.3~1.6 9.0~12.0 12~18
Φ500-Φ800 6.0~6.9 9.0~15.0
UHP Φ200-Φ450 1.66~1.75 1.80~1.86 5.2~5.8 3.0~4.0 10.5~15.5 23~32 1.0~1.4 0.9~1.2 9.0~13.0 15~21
Φ500-Φ800 5.2~5.8 9.0~15.0

Recommended Current Carrying Capacity of Graphite Electrode

Nominal
Diameter		 RP HP UHP
A A/m³ A A/m³ A A/m³
200 5000~6900 15~21 5500~9000 18~25
250 7000~10000 14~20 8000~13000 18~25
300 10000~13000 14~18 13000~17400 17~24 15000~22000 20~30
350 13500~18000 14~18 17400~24000 17~24 20000~30000 20~30
400 18000~23500 14~18 21000~31000 16~24 25000~40000 19~30
450 22000~27000 13~17 25000~40000 15~24 32000~45000 19~27
500 25000~32000 13~16 30000~48000 15~24 38000~55000 18~27
550 28000~34000 12~14 34000~53000 14~22 45000~65000 18~27
600 30000~36000 11~13 38000~58000 13~21 52000~75000 18~27
650 32000~39000 10~12 41000~65000 12~20 60000~91000 18~27
700 34000~42000 9~11 45000~72000 12~19 70000~120000 18~30
750 41000~51000 9~11 55000~87000 12~19 82000~124000 18~27
800 47000~57000 9~11 62000~99000 12~19 94000~141000 18~27

Diameter and Length of Graphite Electrode

Nominal Diameter Actual Diameter(mm) Actual Length(mm)
mm inch Max Min Min Crust Diameter Standard Tolerane Short
200 8 205 200 197 1800 ±100 -275
250 10 256 251 248 1800 ±100
300 12 307 302 299 1800 ±100
350 14 358 352 349 1800/2100/2400 ±100
400 16 409 403 400 1800/2100/2400 ±100
450 18 460 454 451 1800/2100/2400 ±100
500 20 511 505 502 1800/2100/2400 ±100
550 22 562 556 553 2100/2400/2700 +200
600 24 613 607 604 2100/2400/2700 +200~-150
650 26 663 659 656 2400/2700/3000 +200~-150 -300
700 28 714 710 707 2400/2700/3000 +200~-150
750 30 765 761 758 2400/2700/3000 +200~-150
800 32 816 812 809 2400/2700/3000 +200~-150

Dimensions Of Pin and Socket

Nominal
Diameter		 Designation
Of Joint		 Dimensions
Of Pin		 Dimensions
Of Socket
mm IEC D
Tolerance
(-0.5~0)		 L
Tolerance
(-0.5~0)		 d2
Tolerance
(-5~0)		 d1
Tolerance
(0~0.5)		 H
Tolerance
(0~7)
250 155T3N 155.57 220.00 103.80 147.14 116.00
300 177T3N 177.16 270.90 116.90 168.73 141.50
350 215T3N 215.90 304.80 150.00 207.47 158.40
400 215T3N 215.90 304.80 150.00 207.47 158.40
400 241T3N 241.30 338.70 169.80 232.87 175.30
450 241T3N 241.30 338.70 169.80 232.87 175.30
450 273T3N 273.05 355.60 198.70 264.62 183.80
500 273T3N 273.05 355.60 198.70 264.62 183.80
500 298T3N 298.45 372.60 221.30 290.02 192.20
550 298T3N 298.45 372.60 221.30 290.02 192.20
200 122T4N 122.24 177.80 80.00 115.92 94.90
250 152T4N 152.40 190.50 108.00 146.08 101.30
300 177T4N 177.80 215.90 129.20 171.48 114.00
350 203T4N 203.20 254.00 148.20 196.88 133.00
400 222T4N 222.25 304.80 158.80 215.93 158.40
400 222T4L 222.25 355.60 150.00 215.93 183.80
450 241T4N 241.30 304.80 177.90 234.98 158.40
450 241T4L 241.30 355.60 169.42 234.98 183.80
500 269T4N 269.88 355.60 198.00 263.56 183.80
500 269T4L 269.88 457.20 181.08 263.56 234.60
550 298T4N 298.45 355.60 226.58 292.13 183.80
550 298T4L 298.45 457.20 209.65 292.13 234.60
600 317T4N 317.50 355.60 245.63 311.18 183.80
600 317T4L 317.50 457.20 228.70 311.18 234.60
650 355T4N 355.60 457.20 266.79 349.28 234.60
650 355T4L 355.60 558.80 249.86 349.28 285.40
700 374T4N 374.65 457.20 285.84 368.33 234.60
700 374T4L 374.65 558.80 268.91 368.33 285.40
750 406T4N 406.40 584.20 296.42 400.08 298.10
750 406T4L 406.40 609.60 292.19 400.08 310.80
800 432T4N 431.80 635.00 313.36 425.48 323.50
800 432T4L 431.80 685.80 304.89 425.48 348.90
Dimensions and Weight of Packing
Nominal Diameter
× Length		 Pcs/Pkg Electrodes Electrodes with pins
mm Inch pcs Overall Dimensions
mm		 Approx. Weight
kg		 Overall Dimensions
mm		 Approx. Weight
kg
200×1800 8×72 2000×1065×500 908 2090×1065×500 930
250×1800 10×72 7 2000×1065×600 1110 2110×1065×600 1150
300×1800 12×72 3 2000×960×420 685 2135×960×420 710
300×1800 12×72 6 2000×960×720 1370 2135×960×720 1420
350×1800 14×72 3 2000×1100×470 880 2150×1100×470 915
350×2100 14×84 3 2300×1100×470 1035 2450×1100×470 1070
350×2400 14×96 3 2600×1100×470 1185 2750×1100×470 1220
400×1800 16×72 2 2000×855×520 795 2175×855×520 830
400×1800 16×72 3 2000×1265×520 1180 2175×1265×520 1230
400×2100 16×84 2 2300×855×520 890 2475×855×520 920
400×2100 16×84 3 2300×1265×520 1300 2475×1265×520 1345
400×2400 16×96 2 2600×855×520 1035 2775×855×520 1065
400×2400 16×98 3 2600×1265×520 1550 2775×1265×520 1595
450×1800 18×72 2 2000×960×570 990 2175×960×570 1035
450×2100 18×84 2 2300×960×570 1100 2475×960×570 1140
450×2400 18×95 2 2600×960×570 1335 2780×960×570 1380
500×1800 20×72 2 2000×1065×630 1205 2230×1065×630 1260
500×2100 20×84 2 2300×1065×630 1375 2530×1065×630 1440
500×2400 20×96 2 2600×1065×630 1625 2830×1065×630 1680
500×2700 20×108 2 2900×1065×630 1815 2830×1065×630 1870
550×2100 22×84 2 2320×1165×680 1690 2550×1165×680 1775
550×2400 22×96 2 2620×1165×680 1940 2850×1165×680 2025
550×2700 22×108 2 2920×1165×680 2180 3150×1165×680 2265
600×2100 24×84 2 2320×1265×750 2000 2550×1265×750 2098
600×2400 24×96 2 2620×1265×750 2300 2850×1265×750 2398
600×2700 24×108 2 2920×1265×750 2700 3150×1265×750 2798
650×2400 26×96 2 2620×1365×800 2800 2900×1365×800 3000
650×2700 26×108 2 2920×1365×800 3100 3200×1365×800 3280
700×2400 28×96 2 2620×1470×855 3200 2900×1470×855 3290
700×2700 28×108 2 2920×1470×855 3600 3200×1470×855 3690
750×2700 30×108 2 2920×1565×900 4000 3220×1565×900 4210
800×2700 32×108 1 2920×860×960 2400 3265×860×960 2540

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