Silicon Nitride Heater Tube

Introduction

Silicon nitride heater tubes does not react with molten aluminum and has non-wetting properties to molten aluminum. Our Silicon Nitride Tube has a very good thermal conductivity which is important to transfer heat effectively from the heater to molten aluminum.

Features

  • High thermal conductivity
  • High temperature resistance
  • Good corrosion resistance (non ferrous metals)
  • Good chemical resistance
  • Good oxidation resistance
  • Very low porosity
  • Non-wetting in molten metal smelts
  • Dimensions can be customized to fit your needs

Application

Silicon Nitride heater tubes are widely used in the non-ferous molten metal industry. Thanks to the high non-wetting properities that they are highly suitable for the foundries using materials such as aluminium, gold, magnesium etc. The tubes have high resistance to corrosion, errosion and oxidation, servicing a long life-time.

Property

  GPSN Technical Data
S3N4 %
>98
Bulk Density g/cm3
3.2
Apparent Pprosity %
<0.3
Flexural Strength R.T. MPa
>850
Compressive Strength MPa
1500
Thermal Expansion Coeff. (0-1200°C) (10-6/K-1)
3.2
Thermal Conductivity 40℃ (W/m/K)
28
Fracture Toughness K1C,MPam1/2
7.2
Hardness HRA
94
Max Working Temp ℃
1400

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