Graphite Electrodes

Technical Services

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Graphite Electrodes

UKCG’s range of top quality graphite electrodes are produced using some of the world’s finest needle cokes and production techniques. This coupled with machining, testing, packing and distribution from our dedicated UK and global facilities, ensures our product and service remains consistent, cost effective and reliable.

UKCG graphite electrodes are produced according to exacting standards authorised and monitored by our personnel.

UKCG graphite electrodes are utilised by leading steel, foundry and fused mineral producers.

Choosing an Electrode

UKCG works with new and existing customers to select the most suitable product for their applications, always ensuring that quality and cost effectiveness are guaranteed.

General product selection guide;

  • UK-X1 Grade is recommended for use in ultra high power large capacity EAF and ultra high power large capacity LF applications.
  • UK-X2 Grade is recommended for use in ultra high power EAF and ultra high power LF applications.
  • UK-X3 Grade is recommended for use in high power LF, Foundry and Fused Mineral applications.

Product Specification

Physical Properties

UK-X1 Grade (Premium)

Electrode Diameter MM 250 – 700
Bulk Density G/CM3 1.64 – 1.75
Specific Resistance μΩM 4.5 – 6.0
Flexural Strength MPa 10 – 15
CTE 10¯61/°C 0.3 – 1.5
Porosity % 17 – 23
Ash Content % 0.1 – 0.6

NB: The above data is based on typical values and not guaranteed.

 

UK-X2 Grade (Premium)

Electrode Diameter MM 200 – 600
Bulk Density G/CM3 1.64 – 1.72
Specific Resistance μΩM 5.0 – 6.5
Flexural Strength MPa 9 – 14
CTE 10¯61/°C 0.4 – 2.0
Porosity % 18 – 24
Ash Content % 0.1 – 0.6

NB: The above data is based on typical values and not guaranteed.

 

UK-X3 Grade (Premium)

Electrode Diameter MM 75 – 600
Bulk Density G/CM3 1.60 – 1.72
Specific Resistance μΩM 5.5 – 7.5
Flexural Strength MPa 8 – 13
CTE 10¯61/°C 0.4 – 2.2
Porosity % 20 – 25
Ash Content % 0.1 – 0.6

NB: The above data is based on typical values and not guaranteed.

Capacity / Load

Nominal Diameter
UK-X1
mm/inch
Current Load / A
250 (10″) 9000 – 15500
300 (12″) 15000 – 22000
350 (14″) 20000 – 32000
400 (16″) 25000 – 42000
450 (18″) 32000 – 48000
500 (20″) 38000 – 58000
550 (22″) 46000 – 65000
600 (24″) 52000 – 75000
650 (26″) 59000 – 82000
700 (28″) 67000 – 101000

 

Nominal Diameter
UK-X2
mm/inch
Current Load / A
200 (8″) 5500 – 12500
250 (10″) 8000 – 13500
300 (12″) 14000 – 20000
350 (14″) 18000 – 26000
400 (16″) 23000 – 33000
450 (18″) 27000 – 42000
500 (20″) 32000 – 50000
550 (22″) 35000 – 55000
600 (24″) 37000 – 62000

 

Nominal Diameter
UK-X3
mm/inch
Current Load / A
75 (3″) 1300 – 2000
100 (4″) 1800 – 3000
130 (5″) 2800 – 4200
150 (6″) 4000 – 5000
200 (8″) 4800 – 9000
250 (10″) 8000 – 12000
300 (12″) 11000 – 16000
350 (14″) 15000 – 22000
400 (16″) 20000 – 28000
450 (18″) 24000 – 34000
500 (20″) 28000 – 44000
550 (22″) 34000 – 52000
600 (24″) 36000 – 58000

Dimensions / Lengths

UKCG machine to meet International standards IEC / JIS and NEMA.

Our machining facilities and expertise allow us to offer our customers electrode machining to meet their specific demands. Whether an exact tolerance or an over size socket and connector system is needed, we can meet the demand.

Nominal Diameter (mm / inch)
Diameter Range (mm / inch)
75 (3″) 73 – 78 (2.87″) – (3.07″)
100 (4″) 98 – 103 (3.86″) – (4.05″)
130 (5″) 127 – 132 (5.00″) – (5.20″)
150 (6″) 149 – 154 (5.87″) – (6.06″)
175 (7″) 174 – 179 (6.85″) – (7.05″)
200 (8″) 200 – 205 (7.87″) – (8.07″)
225 (9″) 225 – 230 (8.86″) – (9.05″)
250 (10″) 251 – 256 (9.88″) – (10.08″)
300 (12″) 302 – 307 (11.89″) – (12.09″)
350 (14″) 352 – 358 (13.86″) – (14.09″)
400 (16″) 403 – 409 (15.87″) – (16.10″)
450 (18″) 454 – 460 (17.87″) – (18.11″)
500 (20″) 505 – 511 (19.88″) – (20.12″)
550 (22″) 556 – 562 (21.89″) – (22.12″)
600 (24″) 607 – 613 (23.90″) – (24.13″)
650 (26″) 657 – 663 (25.87″) – (26.10″)
700 (28″) 708 – 714 (27.80″) – (28.11″)

Electrode Lengths

Nominal Diameter (mm / inch)
Length Range (mm / inch)
1000 (40″) 925 – 1050 (36.42″) – (41.34″)
1200 (48″) 1100 – 1250 (43.30″) – (49.21″)
1500 (60″) 1400 – 1600 (55.12″) – (62.99″)
1800 (72″) 1700 – 1900 (66.29″) – (74.80″)
2100 (84″) 1975 – 2225 (77.75″) – (87.59″)
2400 (96″) 2275 – 2525 (89.56″) – (99.40″)
2700 (110″) 2550 – 2900 (100.39″) – (114.17″)

Connector Combinations

4 TPI

Nominal Electrode Diameter
(mm / inch)
IEC Designation Code
Major Nipple Diameter
(mm / inch)
Length of Nipple
(mm / inch)
75 (3″) 45T4N 46.04 (1.81″) 76.20 (3″)
100 (4″) 69T4N 69.85 (2.75″) 101.60 (4″)
130 (5″) 79T4N 79.38 (3.12″) 127.00 (5″)
150 (6″) 92T4N 92.08 (3.625″) 139.70 (5.5″)
175 (7″) 107T4N 107.95 (4.25″) 165.10 (6.5″)
200 (8″) 122T4N 122.24 (4.812″) 177.80 (7″)
225 (9″) 139T4N 139.70 (5.5″) 177.80 (7″)
250 (10″) 152T4N 152.40 (6″) 190.50 (7.5″)
300 (12″) 177T4N 177.80 (7″) 215.90 (8.5″)
350 (14″) 203T4N
203T4L
203.20 (8″)
203.20 (8″)
254.00 (10″)
304.80 (12″)
400 (16″) 222T4N
222T4L
222.25 (8.75″)
222.25 (8.75″)
304.80 (12″)
355.60 (14″)
450 (18″) 241T4N
241T4L
269T4L
241.30 (9.5″)
241.30 (9.5″)
269.88 (10.625″)
355.60 (14″)
355.60 (14″)
457.20 (18″)
500 (20″) 269T4N
269T4L
269.88 (10.625″)
269.88 (10.625″)
355.60 (14″)
457.20 (18″)
550 (22″) 298T4N
298T4L
298.45 (11.75″)
298.45 (11.75″)
355.60 (14″)
457.20 (18″)
600 (24″) 317T4N
317T4L
317.50 (12.5″)
317.50 (12.5″)
355.60 (14″)
457.20 (18″)
650 (26″) 355T4N
355T4L
355.60 (14″)
355.60 (14″)
457.2 (18″)
558.8 (22″)
700 (28″) 374T4N
374T4L
374.65 (14.75″)
374.65 (14.75″)
457.2 (18″)
558.8 (22″)

 

3 TPI

Nominal Electrode Diameter
(mm / inch)
IEC Designation Code
Major Nipple Diameter
(mm / inch)
Length of Nipple
(mm / inch)
225 (9”) 139T3N 139.70 (5.5”) 203.20 (8”)
250 (10”) 155T3N 155.57 (6.124”) 220.00 (8.661”)
300 (12”) 177T3N 177.16 (6.97”) 270.90 (10.665”)
350/400 (14”/16) 215T3N
215T3L
215.90 (8.5”)
215.90 (8.5”)
304.80 (12”)
355.60 (14”)
400/450 (16”/18”) 241T3N
241T3L
241.30 (9.5”)
241.30 (9.5”)
338.70 (13.334”)
355.60 (14”)
500 (20”) 273T3N
273T3L
273.05 (10.75”)
273.05 (10.75”)
355.60 (14”)
457.20 (18”)
550 (22”) 298T3N
298T3L
298.45 (11.75”)
298.45 (11.75”)
372.50 (14.66”)
457.20 (18”)

• UKCG nipples / connectors can be supplied pitch plugged.
• UKCG electrodes / connectors can be supplied pre-set.

Recommended Torque Levels

Electrode Diameter
(mm / inch)
Torque (nm)
Torque (Ft. lbs) Torque (Kg-M)
200 (8”) 250 180 25
225 (9″) 350 260 35
250 (10″) 450 330 45
300 (12″) 650 480 65
350 (14″) 850 630 90
400 (16″) 1100 810 110
450 (18″) 1500 1100 150
500 (20″) 2500 1850 250
550 (22″) 3500 2570 350
600 (24″) 4000 2940 400
650 (26″) 5000 3680 500
700 (28″) 6000 4410 600

Packaging

All UKCG products are packed in a manner which ensures complete customer satisfaction. Our packaging is designed to withstand the necessary handling, movement and storage involved in getting our electrodes to our varied customer locations around the globe.

Should you have a specific packaging requirement we can of course endeavour to cater for your requirements but our standard and proven packaging formats are as follows;

Export Packaging

  • Electrodes are protected at both nipple and exposed socket end.
  • Electrodes are steel banded to bearers.
  • Electrodes are wood crated and steel banded.

European and North American Packaging

  • Electrodes are protected at both nipple and exposed socket end.
  • Electrodes are steel banded to bearers.

Re-Machining

UKCG can offer a full graphite electrode re-generation package. UKCG can salvage suitable electrodes broken on furnace and either machine these down for ladle use or socket for re-use on the EAF. Further UKCG can supply a comprehensive range of UHP nipples to accompany electrodes that have been reconditioned on behalf of our customers.


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