Items

Unit

Nominal diameter(mm)

75-130

150-200

250-300

Specific resistance not over

Electrode

μΩ.m

7.0

7.5

7.5

Nipple

6.0

6.0

6.0

Bending strength not below

Electrode

MPa

9.8

9.8

7.8

Nipple

13

13

13

Elastic modulus not over

Electrode

GPa

9.3

9.3

9.3

Nipple

14

14

14

Ash content not over

Electrode

%

0.2

0.2

0.2

Nipple

Bulk density not below

Electrode

g/cm3

1.58

1.54

1.53

Nipple

1.72

1.72

1.72

(C.T.E)not over

Electrode

10^-6/℃

2.9

2.9

2.9

Nipple

2.7

2.7

2.8

Items

Unit

Nominal diameter(mm)

350-400

450-500

550-600

Specific resistance not over

Electrode

μΩ.m

7.0

7.5

7.5

Nipple

4.5

4.5

4.5

Bending strength not below

Electrode

MPa

10

8.5

8.5

Nipple

18

20

20

Elastic modulus not over

Electrode

GPa

9.3

9.3

9.3

Nipple

16

18

18

Ash content not over

Electrode

%

0.2

0.2

0.2

Nipple

Bulk density not below

Electrode

g/cm3

1.60

1.60

1.60

Nipple

1.75

1.75

1.75

(C.T.E)not over

Electrode

10^-6/℃

2.2

2.2

2.2

Nipple

2.0

2.0

2.0

Nominal Diameters

Allowable Current

Current Desity

mm

A

A∕C㎡

75

1000-1400

22-31

100

1500-2400

19-30

130

2200-3400

17-26

150

3000-4500

16-25

200

5000-6900

15-21

250

7000-10000

14-20

300

10000-13000

14-18

350

13500-18000

14-18

400

18000-23500

14-18

450

22000-27000

13-17

500

25000-32000

13-16

550

31000-41000

13-16

600

37000-45000

13-16

Diameter （mm）

Length （mm）

Norminal Diameter

Max

Min

Min of Blacking

Standard

Tolerance

Short dimension length

75

78

73

72

1000

±50

-255

100

103

98

97

1200

130

132

127

126

1200

150

154

149

148

1600

1800

±100

-275

200

205

200

197

250

256

251

248

300

307

302

299

350

357

352

349

400

409

403

400

1600

1800

2000

2200

2400

2700

450

460

454

451

500

511

505

502

550

562

556

553

600

613

607

604