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550-600mm UHP graphite electrode

Product Details

550-600mm UHP graphite electrode,UHP Graphite Electrodes,Oxidation Resistance Graphite Electrode,UHP Graphite Electrodes Manufacturer UHP Graphite Electrodes Oxidation Resistance Graphite Electrode UHP Graphite Electrodes Manufacturer

Electric resistivity : 4.5-6.0

Bending strength: >=10.0

Elastic Modulus: <=14

Bulk density: 1.68-1.74

Ash:<=0.3

CTE: 1.10-1.50

Ultra high power graphite electrode is a graphite electrode with allowable current density greater than 25A/cm2 . UHP graphite electrode mainly used in ultra-high power steelmaking electric arc furnace.

Physical and Chemical Index of Ultra high Power Graphite Electrode

Item

Unit

UHP

300~500

550~600

700~800

Electric Resistivity

Electrode

uΩ.m

4.6~6.2

4.5~6.0

4.5~5.8

Nipple

3.5~5.0

3.4~4.5

3.3~4.3

Bending Strength

Electrode

MPa

≥10.5

≥10.0

≥10.0

Nipple

≥20.0

≥22.0

≥23.0

Modulus of Elasticity

Electrode

GPa

≤14.0

≤14.0

≤14.0

Nipple

≤20.0

≤22.0

≤22.0

Bulk Density

Electrode

G/cm3

1.66~1.73

1.68~1.74

Nipple

1.75~1.82

1.78~1.85

Ash Content

Electrode

%

≤0.3

Nipple

The Coefficient of Thermal Expansion(CTE)

Electrode

10-6/℃

1.20~1.50

1.10~1.50

Nipple

1.10~1.40

1.00~1.30

UHP Graphite Electrode Current Carrying Capacity

Norminal Diameter

UHP

Current Carrying Capacity

Current Density

inch

mm

A

A/cm2

12

300

15000~22000

20~30

14

350

20000~30000

20~30

16

400

25000~40000

19~30

18

450

32000~45000

19~27

20

500

38000~55000

18~27

22

550

45000~65000

18~27

24

600

50000~75000

18~26

28

700

70000~120000

18~25

32

800

Tolerance of Graphite Electrode Diameter and Length

Tolerance of Graphite Electrode Diameter and Length(mm)

Nominal Diameter

Actural diameter

Length

in

mm

max

min

Black surface min

12

300

307

302

299

1800/2000

14

350

358

352

349

1800/2000/2200

16

400

409

403

400

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