Regular Power Graphite Electrodes(RP)

Physical Properties

Units

Nominal diameter(mm)

YB/T4088~2000

Inner quality standard

150~300

350~500

200~300

350~500

550~600

Specific resistance≤

Electrode

µΩ.m

10.5

10.5

8.0

9.0

9.5

Nipple

8.5

8.5

6.0

6.5

7.0

Bending strength≥

Electrode

Mpa

9.8

6.4

10.0

8.0

8.0

Nipple

13.0

13.0

14.0

14.0

14.0

Elastic modulus≤

Electrode

Gpa

9.3

9.3

10.3

10.3

10.3

Nipple

14.0

14.0

14.0

14.0

14.0

Ash≤

Electrode

%

0.5

0.5

0.4

0.4

0.4

Nipple

0.5

0.5

0.4

0.4

0.4

CTE≤

Electrode

10~6/0C

2.9

2.9

2.8

2.8

2.8

Nipple

2.7

2.8

2.8

2.8

2.8

High Power Graphite Electrodes(HP)

Physical Properties

Units

Nominal diameter(mm)

YB/T4088~2000

Inner quality standard

200~400

450~500

200~300

350~500

550~600

Specific resistance≤

Electrode

µΩ.m

7.0

7.5

6.0

6.5

7.0

Nipple

6.5

6.5

5.5

6.0

6.0

Bending strength≥

Electrode

Mpa

10.8

9.8

11.0

10.0

10.0

Nipple

14.0

14.0

15.0

15.0

15.0

Elastic modulus≤

Electrode

Gpa

12.0

12.0

12.0

12.0

12.3

Nipple

16.0

16.0

14.0

14.0

14.0

Ash≤

Electrode

%

0.3

0.3

0.2

0.3

0.3

Nipple

0.3

0.3

0.2

0.3

0.3

CTE≤

Electrode

10~6/0C

2.4

2.4

2.0

2.2

2.2

Nipple

2.2

2.2

2.0

2.0

2.0

Bulk density≥

Electrode

g/cm3

1.60

1.60

1.64

1.65

1.64

Nipple

1.70

1.70

1.75

1.75

1.74

Ultra High Power Graphite Electrodes(UHP)

AC furnace

DC furnace

Applied durance specification diameter

300~400mm

12’’~16’’

450~500mm

18’’~20’’

550~600mm

22’’~24’’

650~700mm

24’’~28’’

Bulk density

g/cm3

1.65~1.76

1.64~1.75

1.64~1.75

1.64~1.75

Specific resistance

µΩ.m

4.2~6.0

4.2~6.0

4.2~6.0

4.2~5.5

Elastic modulus

Gpa

7~14

7~14

7~14

7~14

Kgf/mm2

700~1400

700~1400

700~1400

700~1400

Bending strength

Mpa

10.5~15

10~15

10~15

10~15

Kgf/cm2

105~150

100~150

100~150

100~150

N/cm2

1050~1500

1000~1500

1000~1500

1000~1500

CTE

10~6/0c

1.0~1.5

1.0~1.5

1.0~1.5

1.0~1.4

True density

g/cm3

2.20~2.23

2.20~2.23

2.20~2.23

2.20~2.23

Porosity

%

20~26

20~27

20~27

20~27

Ash≤

%

0.2

0.2

0.2

0.2

High Density(impregnated) Graphite Electrodes

Physical Properties

Units

Dia75~225mm

Dia250~350mm

Dia400~550mm

Dia550~650mm

Specific resistance≤

Electrode

µΩ.m

9.0

9.0

9.0

10.0

Nipple

6.5

6.5

6.8

6.8

Bending strength≥

Electrode

Mpa

9.0

9.0

8.0

7.0

Nipple

14.0

14.0

14.0

14.0

Elastic modulus≤

Electrode

Gpa

11.0

11.0

11.0

11.0

Nipple

14.0

14.0

14.0

14.0

Ash≤

Electrode

%

0.3

0.3

0.3

0.3

Nipple

0.3

0.3

0.3

0.3

Bulk density≥

Electrode

g/cm3

1.65

1.65

1.64

1.63

Nipple

1.73

1.73

1.73

1.73

CTE≤

Electrode

10~6/0C

2.7

2.7

2.7

2.7

Nipple

2.2

2.2

2.4

2.4

Ultra High Power Graphite Electrodes(UHP)

AC furnace

DC furnace

Applied durance specification diameter

300~400mm

12’’~16’’

450~500mm

18’’~20’’

550~600mm

22’’~24’’

650~700mm

24’’~28’’

Bulk density

g/cm3

1.65~1.76

1.64~1.75

1.64~1.75

1.64~1.75

Specific resistance

µΩ.m

4.2~6.0

4.2~6.0

4.2~6.0

4.2~5.5

Elastic modulus

Gpa

7~14

7~14

7~14

7~14

Kgf/mm2

700~1400

700~1400

700~1400

700~1400

Bending strength

Mpa

10.5~15

10~15

10~15

10~15

Kgf/cm2

105~150

100~150

100~150

100~150

N/cm2

1050~1500

1000~1500

1000~1500

1000~1500

CTE

10~6/0c

1.0~1.5

1.0~1.5

1.0~1.5

1.0~1.4

True density

g/cm3

2.20~2.23

2.20~2.23

2.20~2.23

2.20~2.23

Porosity

%

20~26

20~27

20~27

20~27

Ash≤

%

0.2

0.2

0.2

0.2