Graphite Electrodes

Graphite electrodes is a kind of conductor, it is essential component for melting scrap of electric arc furnace and ladle furnace. We supply RP,HP,UHP grade graphite electrodes from dia250mm to dia700mm for both arc furnace and ladel furance. HKT graphite electrodes and nipples have good quality base on below properties:  

For more graphite electrodes for saleinformation, please contact us. We will provide professional answers.

Low electrical resistance

Good thermal conductivity

High resistance to thermal shocks

Good mechanical strength

High resistance to oxidation

Exact mechanical machining

Manufacturing within narrow tolerances

Safe locking

Low graphite electrode consumption

We choose high quality raw material and strictly process to ensure the good quality graphite electrodes. 

• Raw Material： Petroleum coke+Needel code+Pitch 
• Manufacture Process:

 

• How to Choose the graphite grade? You may according to the below parameter to choose or contact us.

Item

Unit

Nominal Diameter

UHP

HP

RP

Φ300-400

≥Φ450

Φ250-400

≥Φ450

Φ250-400

Φ450-600

Electric Resistivity

electrode

μΩ·m

≤5.0

≤5.5

≤6.0

≤6.5

≤8.5

≤9.0

Nipple

≤4.0

≤4.5

≤5.5

Transverse Strength

electrode

MPa

≥15.0

≥10.5

≥8.0

≥7.0

Nipple

≥24.0

≥20.0

≥16.0

Young’s Modulus 

electrode

GPa

≤14.0

≤12.0

≤9.3

Nipple

≤18.0

≤16.0

≤14.0

Bulk Density

electrode

g/cm3

≥1.68

≥1.65

≥1.54

Nipple

≥1.76

≥1.74

≥1.70

Coefficient of thermal expansion

electrode

10-6/℃

≤1.5

≤2.0

≤2.5

Nipple

≤1.2

≤1.6

≤2.0

Ash

%

≤0.2

≤0.2

≤0.2

 

 

• Suggested Current Capacity and Current Density

Norminal Diameter

Want more information on Super High Power Graphite Electrode? Feel free to contact us.

RP

HP

UHP

mm

Current load

A

Current Density A/cm2

Current load

A

Current Density  A/cm2

Current load

A

Current Density  A/cm2

200

5000-6900

15-21

5500-9000

18-25

   

250

7000-10000

14-20

8000-13000

18-25

9200-15100

21-30

300

10000-13000

14-18

13000-17400

17-24

13000-22000

20-30

350

13500-18000

14-18

17400-24000

17-24

20000-30000

20-30

400

18000-23500

14-18

21000-32000

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

32000-40000

13-16

37000-57000

15-23

48000-60000

18-24

600

38000-47000

13-16

44000-67000

15-23

52000-72000

18-24

700

45000-54000

13-16

54000-73000

15-23

62000-95000

18-24

 

• Average Weights of Graphite Electrodes and Nipples
  

Nominal Electrode Size  Average Weight Diameter Length Electrode Nipple Normal   Long   mm mm  kg  kg  kg  350 1800 300 11

13

350 2100 350 11 13 400 1800 390 16 18 400 2100 465 16 18 400 2400 531 16 18 450 1800 500 19 22 450 2100 580 19 22 450 2400 663 19 22 500 1800 615 28 34 500 2100 707 28 34 500 2400 815 28 34 550 2100 850 35 42 550 2400 965 35 42 600 2100 1000 40 50 600 2400 1140 40 50 600 2700 1300 40 50

• Reinforced packaging for overseas transport 

If you need more information Please contact us freely!

Note 13: Electrode Clamp Position

Clamp holder should be placed out of the alarm line. (Note: clamp holder should not clamp at alarm line zone, or the middle of the electrode, as it is easy to cause the rupture of the electrode) Clamp holder and interfaces of the electrode must be cleaned regularly to keep good touch with electrode. Cooling water jacket of the clamp holder should be tight to prevent water leakage.

For more information, please visit graphite electrode manufacturer.