Product Details

Appearance:

Commonly in yellowish-brown or reddish-brown, some in greyish-green color.

Luster:

Vitreous luster. Its cleavage plane has nacreous luster or submetallic luster.

Crystal Form:

Monoclinic crystal, pseudo-hexagonal crystalline or short cylindrical model.

Distinguishing Feature:

1.High insulating strength and large electrical resistance.

2.Low electrolyte loss.

3.Good arc-resistance and corona resistance.

4.High mechanical strength.

5.Resistant to high temperature and dramatic temperature changes.

6.Resistant to acid and alkali

Chemical Composition:

Element SiO₂ Al₂O₃ K₂O Na₂O MgO CaO TiO₂ Fe₂O₃ S+P

Content（%） 40.6-48.5 10.8-19.8 8.2-9.8 0.6-0.7 20.5-23.8 0.4-0.6 0.8-0.9 1.5-7.5 0.02

Physical Property:

Thermal Endurance（℃） Mohs Hardness  Density（g/cm³） Dielectric Strength （KV/mm） Tensile Strength（MPa） Modulus of Elasticity (MPa) Melting Point（℃）

800-900 2.65 2.70-2.85 122 157-206 1395-1874 1375