Item

Unit

Nominal Diameter  

(mm)

RP

≤300

≥350

Resistance

Electrode

μΩ·m

≤8.5

Nipple

≤6.5

Bending Strength

Electrode

MPa

≥8.5

≥7.0

Nipple

≥15.0

Elastic Modulus

Electrode

GPa

≤9.3

Nipple

≤14.0

Bulk Density

Electrode

g/cm3

≥1.53

≥1.52

Nipple

≥1.69

C.T.E.

Electrode

10-6/°C

≤2.9

Nipple

≤2.8

Ash

%

≤0.5

Dia.

RP

mm

Current load

A

Current density

A/cm2

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

225

6000-8000

15-20

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

32000-40000

13-16

600

38000-47000

13-16

700

45000-54000

13-16