Product Description

  Silicon Nitride insulation ring is widely used in polysilicon industry.

Physical and chemical index

Types	Gas Si3N4
Density	>3.2g/cm3
Si3N4 content	>92%
Electrical resistivity	>1010
Compressive strength	>1500Mpa
Thermal conductivity(W/mk)	16-22
Porosity	0
Thermal expansion coeff.(RT-1000℃)	3.2
Max temperature In air	1400℃
Hardness(HRA)	>92

Common size:

We usually prodcue as your drawings.

Features

1, Moulding: Cold isostatic pressing(CIP)

2, Sintering: GPSN

3, High strength &good compactness

4, Low thermal expansion coefficient

5, Excellent thermal shock resistance

6, No wetting by molten aluminum and other non-ferrous molten metal

7, Good corrosion resistance