Item

Unit

ND/Regular Sizeï¼ÂÂÂ??mmï¼ÂÂÂ??

 250-400

450-500

 Specific Resistance

Electrode

 μΩM

  4.8-5.8 

4.8-6.2

Nipple

4.0-4.5

 4.0-4.5

 Bending Strength

Electrode

 Mpa

 ≥12

≥12

Nipple

 ≥18

 ≥18

Elastic Modulus

Electrode

 Gpa

 ≤14

≤14

Nipple

 ≤18

 ≤18

 Bulk Density

Electrode

 g/cm3

 1.66-1.74

1.66-1.74

Nipple

 ≥1.76

  ≥1.76

 C.T.E

Electrode

 10-6/âÂÂÂ??ÂÂÂ??

 1.2-1.4

 1.2-1.4

Nipple

 1.0-1.2

1.0-1.2

Ash Content

Electrode

 %

 ≤0.3

≤0.3

Nipple

 ≤0.3

 ≤0.3