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Electrodes

Types: Regular Power Graphite Electrodes ; High Density Graphite electrode; High Power Graphite Electrode ; Ultra-High Power Graphite Electrodes
The top grade products are carefully selected for precision machining at our factory to produce our comprehensive range of quality electrodes. Generally electrodes are made in conformity with China 's standards, but electrodes made in Qingdao Grand graphite Products Co;Ltd can be machined to cater for customer's special requirements. We shall guarantee all that we manufactured to be in best performance for end users and meet the individual demand of customers

 

Regular Power Graphite Electrode

Main Technical index

ltems

Unit

Nominal diameter(mm)

250-300

350-500

Specific resistance
not over

Electrode
Nipple

̦.m

8.5

6.0

8.5

6.0

Transverse strength
not below

Electrode
Nipple

MPa

8.0
13.5

7.0
13.5

Elastic modulus
not over

Electrode
Nipple

GPa

9.3
14.0

9.3
14.0

Ash content
not over

Electrode
Nipple

%

0.3

0.2

0.3

0.2

Bulk density
not below

Electrode
Nipple

g/cm 3

1.54
1.70

1.53
1.70

(C.T.E)
not over

Electrode
Nipple

10 -6 1/C

2.8
2.7

2.8
2.7

Allowable Current of Regular Power G.E.

Nominal diameters

Allowable current

Current density

mm

A

A/cm2


200
250
300
350
400
450
500

5000-6900
7000-10000
10000-13000
13500-18000
18000-23500
22000-27000
25000-32000

15-21
14-20
14-18
14-18
14-18
13-17
13-16

High Density Graphite Electrodes

Main Technical index

Item

Unit

Nominal Diameter (mm)

250-350

400-500

Specific resistance
Not over

Electrode
Nipple

̦ .m

7.0

6.0

7.5

6.0

Transverse strength.
Not below

Electrode
Nipple

MPa

10.0

14.0

9.0

14.0

Modulus elasticity
Not over

Electrode
Nipple

GPa

12.0

14.0

12.0

14.0

Bulk Density
Not below

Electrode
Nipple

g/cm 3

1.60

1.70

1.60

1.70

Ash not over

Electrode
Nipple

%

0.2

0.2

C.T.E not over

Electrode
Nipple

10 -6 1/C

2.4

2.2

2.4

2.2

Allowable Current of Impregnated(High Density) G.E.

Nominal Diameter MM

Allowable current
A

Current Density
 A/cm 2

75

100

130

150

200

250

300

350

400

450

500

1050 1450

1700 2500

2500 3700

3300 4800

6000 8200

8500 11500

11400 15800

15400 22000

19200 28700

23700 33300

27000 40000

23 32

22 31

19 28

18 27

18 25

17 23

16 22

16 22

15 22

14 21

High Power Graphite Electrodes

Main Technical index

ltems

Unit

Nominal diameter

300-400

450-500

Specific resistance not over

Electrode
Nipple

̦.m

6.5
5.5

7.0
5.5

Transverse strength not below

Electrode
Nipple

MPa

11.0
14.0

10.2
14.0

Elastic modulus not over

Electrode
Nipple

GPa

12.0
16.0

12.0
16.0

Ash content not over

Electrode
Nipple

%

0.2

0.2

Bulk density not below

Electrode
Nipple

g/cm3

1.62
1.72

1.62
1.72

(C.T.E)not over

Electrode
Nipple

10 -6 1/C

2.4
2.2

2.4
2.2

Allowable Current of High Power G.E.

Nominal
diameters

Allowable current

Current desity

mm

A

A/cm2

300

13000-17400

17-24

350

17400-24000

17-24

400

21000-31000

16-24

450

25000-40000

15-24

500

30000-48000

15-24

Ultra-High Power Graphite Electrodes

Main Technical index

 

Unit


Nominal diameter(mm)

350-400

450-500

Specific resistance not over

Electrode
Nipple

̦.m

5.5
5.0

6.0
5.0

Transverse strength not below

Electrode
Nipple

MPa

11.0
16.5

11.0
16.5

Elastic modulus not over

Electrode
Nipple

GPa

14.0
18.0

14.0
18.0

Ash content not over

Electrode
Nipple

%

0.2

0.2

Bulk density not below

Electrode
Nipple

g/cm3

1.65
1.72

1.65
1.72

(C.T.E)not over

Electrode
Nipple

10 -6 1/C

1.5
1.4

1.5
1.4

Allowable Current of Ultra-High Power G.E.

Nominal
diameters

Allowable current

Current desity

mm

A

A/cm2


350
400
450
500

20000-30000
25000-40000
32000-45000
38000-55000

20-30
19-30
19-27
18-27


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