.

300-500mm UHP graphite electrode

,,,

Electric resistivity : 4.6-6.2

Bending strength:>=10.5

Elastic Modulus:<=14

Bulk density:1.66-1.73

Ash:<=0.3

CTE:1.20-1.50

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

Ultra High Power Graphite Electrode Current Carrying CapacityUltra High Power Graphite Electrode Current Carrying Capacity

PhysicalandChemicalIndexofUltrahighPowerGraphiteElectrode

Item

Unit

UHP

300~500

550~600

700~800

ElectricResistivity

Electrode

uΩ.m

Nipple

BendingStrength

Electrode

MPa

≥10.5

≥10.0

≥10.0

Nipple

≥20.0

≥22.0

≥23.0

ModulusofElasticity

Electrode

GPa

≤14.0

≤14.0

≤14.0

Nipple

≤20.0

≤22.0

≤22.0

BulkDensity

Electrode

G/cm3

Nipple

AshContent

Electrode

%

≤0.3

Nipple

TheCoefficientofThermalExpansion(CTE)

Electrode

10-6/℃

Nipple

UHPGraphiteElectrodeCurrentCarryingCapacity

NorminalDiameter

UHP

CurrentCarryingCapacity

CurrentDensity

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

ToleranceofGraphiteElectrodeDiameterandLength(mm)

NominalDiameter

Acturaldiameter

Length

in

mm

max

min

Blacksurfacemin

12

300

307

302

299

1800/2000

14

350

358

352

349

1800/2000/2200

16

400

409

403

400

1800/2000/2200

18

450

460

454

451

1800/2000/2200

20

500

511

505

502

2000/2200/2400

22

550

562

556

553

2000/2200/2400/2700

24

600

613

607

604

2200/2400/2700/3000

28

700

714

710

707

2200/2400/2700/3000

29

800

816

812

809

2200/2400/2700/3000

PermissibleDeviationofGraphiteElectrodeLength(mm)

NominalLength

StandardDeviation

ShortLengthDeviation

max

min

max

min

1800

+100

-100

-100

-275

2000

+100

-100

-100

-275

2200

+100

-100

-100

-275

2400

+100

-100

-100

-275

2700

+200

-150

-150

-275

3000

+200

-150

-150

-300



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