UNG  CO.,LTD.


Tel:+86-353-5668159,5668319

Fax:+86-353-2560350

Email:gong@ungco.cn

YANGQUAN UNG TRADING CO.,LTD.

UNG METALLURGY CO.,LTD.

Meilong bldg A,quanzhong street ,Yangquan 045000,Shanxi,China

GRAPHITE ELECTRODE/BLOCK for metallurgry

Item

Unit

Norminal Diameter

UHP

HP

RP

≤Φ400

≥Φ450

≤Φ400

≥Φ450

≤Φ300

≥Φ350

Resistance

E

μΩ·m

≤5.5

≤6.5

≤8.5

N

≤4.5

≤5.5

≤6.5

Bending Strength

E

MPa

≥11.0

≥10.5

≥9.8

≥8.5

≥7.0

N

≥20.0

≥16.0

≥15.0

Elastic Modulus

E

GPa

≤14.0

≤12.0

≤9.3

N

≤18.0

≤16.0

≤14.0

Bulk Density

E

g/cm3

≥1.66

≥1.67

≥1.62

1.60

≥1.53

≥1.52

N

≥1.75

≥1.73

≥1.69

CTE.

E

10-6/℃

≤1.5

≤2.4

≤2.9

N

≤1.4

≤2.2

≤2.8

Ash

%

≤0.3

≤0.3

≤0.5

 

 

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

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