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Graphite Electrodes

Selection of Graphite Electrode Grades and Diameters.
//Graphite Electrodes

Continuous development in Electric Arc Furnaces & Ladle Technology has increased the need of Graphite Electrodes of very stringent quality. Emergence of DRI, HBI, Sponge Iron as potential source of raw material as against steel scrap revolutionized Electric Steel Making Industry. Higher Capacities of Electric Arc Furnace with bigger size, UHP Electrodes are common requirements of Electric Steel Industry. The emphasis is on better consumption norms & least electro mechanical problems. CEL keeps abreast of technological developments in EAF’s at its customers end in order to carry on R & D efforts to meet their ever – changing and/or their demanding requirements.

A global presence in North America, Europe and Asia with national and international partnerships for manufacturing, warehousing and distribution.

ISO 9001:2010 quality – certified graphite electrode manufacturing processes with confirmed consistencies.

Ample inventories for an assured and reliable supply.

Choice of electrodes (high power, super high power and ultra high power) to meet specific furnace demands.

Electrodes with truncated cone nipples (3 – TPI and 4 – TPI) or electrodes with male / female connectors in a complete range of dimensions 10″ – 30″ (250 mm – 750 mm).

Ability to provide custom graphite electrodes for specific applications and requirements.

Extended professional technical support and sales services to melt shop personnel and buyers.

Recommendations on storing / handling and use of electrodes.

GRAPHITE ELECTRODE SELECTION GUIDE (Metric)

Select Electrode Diameter Electrode Length Options Pin Options
Min Max Min Max Typical Weight of PRE – CET™ Electrode IEC Designation Diameter x Length Threads per 25.4mm
mm mm mm mm mm mm kg mm
250 251 256 1500 1800 1490 1745 1650
1905		 140
160		 152T4N
155T3N		 152.40 x 190.50
155.57 x 220.00		 4
3
300 303 307 1800 1745 1905 230 155T3N
177T3N
177T4N		 155.57 x 220.00
177.16 x 270.90
177.80 x 215.90		 3
3
4
350 352 357 1800 1745 1905 310 177T3N
203T4N
203T4L
215T3N		 177.16 x 270.90
203.20 x 254.00
203.20 x 304.80
215.90 x 304.80		 3
4
4
3
400 406 409

1800

2100

2400

1745

2045

2325

1905

2210

2515

 410
460
550		 215T3N
222T4N
222T4L
241T3N
241T3L		 215.90 x 304.80
222.25 x 304.80
222.25 x 355.60
241.30 x 338.70
241.30 x 355.60		 3
4
4
3
3
450 457 460

1800

2100

2400

1745

2045

2325

1905

2210

2515

 510
620
700		 241T3N
241T3L
241T4L
269T4L
273T3L		 241.30 x 338.70
241.30 x 355.60
241.30 x 355.60
269.88 x 457.20
273.05 x 457.20		 3
3
4
4
3
500 508 511

1800

2100

2400

1745

2045

2325

1905

2210

2515

 640
730
870		 269T4L
269T4N
273T3N
273T3L		 269.88 x 457.20
269.88 x 355.60 273.05 x 355.60 273.05 x 457.20		 4
4
3
3
550 559 562

2100

2400

2700

2045

2325

2680

2210

2515

2870*

 910
1050
1180		 298T4N 298T3N 298T4L 298.45 x 355.60 298.45 x 372.50 298.45 x 457.20 4
3
4
600 610 613

2100

2400

2700

2045

2325

2680

2210

2515

2870*

1080

1250

1410

 317T4N 317T4L 317.50 x 355.60 317.50 x 457.20 4
4
650 660 663 2700 2680 2870* 1650 355T4N 355T4L 355.60 x 457.20 355.60 x 558.80 4
4
700 711 714 2700 2680 2870* 1940 374T4N 374T4L 374.65 x 457.20 374.65 x 558.80 4
4
750 762 765 2700 2680 2870* 2070 406T4N 406.40 x 584.20 4

* Longer maximum length available to many 2700 mm customers

GRAPHITE ELECTRODE SELECTION GUIDE (English)

Select Electrode Diameter Electrode Length Options Pin Options
Min Max Min Max Typical Weight of PRE-CETTM Electrode IEC Designation Diameter X Length Threads per 25.4mm
In In In In In In Pounds In
10 9.88 10.08 60
72		 57 65 310
350		 152T4N
155T3N		 6 x 7.5
6.125 x 8.66		 4
3
12 11.92 12.08 72 68.5 75 510 155T3N
177T3N
177T4N		 6.125 x 8.66
6.975 x 10.66
7 x 8.5		 3
3
4
14 13.88 14.08 72 68.5 75 690 177T3N
203T4N
203T4L
215T3N		 6.975 x 10.66
8 x 10
8 x 12
8.5 x 12		 3
4
4
3
16 16.00 16.12 72
84
96		 68.5 80.5 91.5 75 87 99 900
1010
1220		 215T3N
222T4N
222T4L
241T3N
241T3L		 8.5 x 12
8.75 x 12
8.75 x 14
9.5 x 13.33
9.5 x 14		 3
4
4
3
3
18 18.00 18.12 72
84
96		 68.5 80.5 91.5 75 87 99 1130 241T3N
241T3L
241T4L
269T4L
273T3L		 9.5 x 13.33
9.5 x 14
9.5 x 14
10.625 x 18
10.75 x 18		 3
3
4
4
3
20 20.00 20.12 72
84
96		 68.5 80.5 91.5 75 87 99 1360 269T4L
269T4N
273T3N
273T3L		 10.625 x 18
10.675 x 14
10.75 x 14
10.75 x 18		 4
4
3
3
22 22.00 22.12 84 80.5 87 1550 298T4N 298T3N 298T4L 11.75 x 14
11.75 x 14.66
11.75 x 18		 4
3
4
24 24.00 24.12 96
110		 91.5 105.5 99 113 1410 317T4N 317T4L 12.5 x 14 12.5 x 18 4
4
26 26.00 26.12 84 80.5 87 1600 355T4N 355T4L 14 x 18
14 x 22		 4
4
28 28.00 28.12 96
110		 91.5 105.5 99 113* 1920 374T4N 374T4L 14.75 x 18 14.75 x 22 4
4
30 30.00 30.12 110 105.5 113* 2010 406T4N 16 x 23 4

* Longer maximum length available to many 110 inch customers

1. DIAMETERS AVAILABLE: DIAMETER FROM 100MM TO 1050MM.
FOR RP GRADE, THE DIA IS USUALLY 100 – 1060MM.
FOR RPI GRADE, THE DIA IS USUALLY 200 – 650MM.
FOR HP GRADE, THE DIA IS USUALLY 300 – 650MM.
FOR SHP GRADE, THE DIA IS USUALLY FROM 400 – 650MM.
FOR SHP GRADE, THE DIA IS USUALLY FROM 400 – 650MM.
2. STANDARD GRADES – PROPERTIES: RP, RPI, HP,SHP & UHP. (GE: ELECTRODES, GN: NIPPLES)
2.1). RP:
RESISTIVITY (UOM ): 8.0 FOR GE, 6.5 FOR GN
BENDING STRENGTH (MPA ): 9.8 FOR GE, 13 FOR GN
BULK DENSITY(G/CM3 ): 1.58 FOR GE, 1.66 FOR GN
C.T.E.(100 -600 C, 10 -6/C ): 2.9 FOR GE, 2.7 FOR GN
ASH: 0.4% FOR GE, 0.2% FOR GN
2.2). RPI:
RESISTIVITY (UOM ): 7.5 FOR GE, 6.2 FOR GN
BENDING STRENGTH (MPA ): 10.0 FOR GE, 14 FOR GN
BULK DENSITY(G/CM3 ): 1.62 FOR GE, 1.70 FOR GN
C.T.E.(100 – 600 C, 10 – 6/C ): 2.8 FOR GE, 2.6 FOR GN
ASH: 0.3% FOR GE, 0.2% FOR GN
2.3). HP
RESISTIVITY (UOM): 6.5 FOR GE, 5.5 FOR GN
BENDING STRENGTH (MPA ): 11 FOR GE, 15 FOR GN
BULK DENSITY(G/CM3): 1.64 FOR GE, 1.72 FOR GN
C.T.E.(100 – 600 C, 10 -6/C ): 2.2 FOR GE, 2.0 FOR GN
ASH: 0.2% FOR GE, 0.1% FOR GN
2.4). SHP
RESISTIVITY (UOM): 6.0 FOR GE, 5.0 FOR GN
BENDING STRENGTH (MPA ): 12 FOR GE, 16 FOR GN
BULK DENSITY(G/CM3): 1.66 FOR GE, 1.75 FOR GN
C.T.E.(100 -600 C, 10 -6/C ): 2.0FOR GE, 1.8 FOR GN
ASH: 0.2% FOR GE, 0.1% FOR GN
2.5). UHP
RESISTIVITY (UOM): 5.5 FOR GE, 4.2 FOR GN
BENDING STRENGTH (MPA): 18 FOR GE, 20 FOR GN
BULK DENSITY(G/CM3): 1.68 FOR GE, 1.78 FOR GN
C.T.E.(100 -600 C, 10 -6/C): 1.6 FOR GE, 1.4 FOR GN
ASH: 0.1% FOR GE, 0.1% FOR GN

3. CURRENT CARRYING CAPACITIES:
3.1). FOR RP GRADE:

DIA CAPACITY CURRENT DENSITY
(MM) (A) (A/cm2)
100 1500-2400 19-30
130 2200-3400 17-26
150 3500-4900 16-25
175 4000-5500 16-22
200 5500-7500 15-21
225 6000-8200 15-20
250 7500-10500 14-20
300 10000-14000 14-18
350 13000-19000 14-18
400 19000-24500 14-18
450 24000-29000 13-17
500 27000-34000 13-16
550 32000-39500 13-16
600 38000-47000 11-14
650 45000-55000 13-16
700 52000-65000 11-14
750 59500-73000 13-16
800 70000-83000 14-17
850 70000-83000 14-17

3.2) FOR HP GRADE

DIA CAPACITY CURRENT DENSITY
(MM) (A) (A/cm2)
200 6500-10500 18-25
225 8000-12500 18-25
250 9500-14000 18-25
300 14000-19000 17-24
350 17500-25000 17-24
400 22500-33500 16-24
450 28000-43500 15-24
500 33000-51500 15-24
550 37000-58000 14-23
600 44000-67500 14-23
650 51500-75500 15-22
700 60000-87000 15-22
750 68400-100000 15-22

2.3). FOR UHP GRADE

DIA CAPACITY CURRENT DENSITY
(MM) (A) (A/cm2)
300 17000-24000 20-30
350 22000-32000 20-30
400 26000-42000 19-30
450 33000-46000 19-27
500 39000-57000 18-27
550 45000-64000 17-25
600 52000-76000 16-24
650 62000-86000 18-25
700 71000-99000 18-25
750 82000-114000 18-25

NOTE: RPI is between RP and HP, SHP is between HP and UHP.

Customer Satisfaction Guarantee

UCT ELECTRODES ENGINEERING EQUIPMENTS (U.C.T.EEE) Specialty Products ensures 100% of all graphite electrodes and nipples meet industry quality standards; are the correct grade, specification and size for the application; have passed final inspection and then are carefully packaged for delivery. This quality product assurance combined with accurate and timely shipments provides a trouble – free start to finish electrode order process. Product quality assurance consists of an accurate visual test along with many automated QA tests before the final inspection.

Selection of Graphite Electrode Grades and Diameters

UCT ELECTRODES ENGINEERING EQUIPMENTS (U.C.T.EEE) Specialty Products has a range of electrode grades and diameters to help maximize your furnace performance and provide measurable operating economies. Select from High Power, Super High Power or Ultra High Power electrode grades, in various diameters, to meet electric-arc furnace electrical, mechanical and / or thermal operating conditions and special applications. The correct selection of electrodes is key to obtaining the most economical furnace operations (e.g., furnace performance vs. carbon consumption).

About Us

UCT ELECTRODES ENGINEERING EQUIPMENTS (U.C.T.EEE) headquartered in Vancouver / Canada, and its affiliates have made investments and formed strategic partnerships for manufacturing in various countries.