Silicon Nitride Riser Tube For Low Pressure Castin

Silicon nitride is the hardest substances in the world because of its high intensity, especially the silicon nitride by hot pressing. It can stand up to high temperature and its intensity will not decline till 1200°C, silicon nitride can not be molten into eutectic mixture after heating until 1900°C. It has excellent chemical corrosion resistance, can resist almost all inorganic acid and caustic soda solution which is below 30%, as well as much organic acid. Silicon nitride is also a kind of material with high performance for electrical insulation. Silicon Nitride Riser Tube has many excellent characteristics, such as corrosion resistance, low thermal-expansion coefficient and long service life .It is the ideal materials of the metallurgy industry because of the excellent oxidation resistance, heat-shock stability and no reaction with the metal solution. NameUnitSI3N4(RB)Bulk Densityg/cm32.5-2.6StrengthHRA80-86Bending StrengthMPa160-210Porosity%10-15Coefficiency of Linear1×10-6/K2.53Bending Strehgth(Mpa*m-1)2.8Thermal conductivityW/mk15 The Silicon Nitride Riser Tube is widely used in the aluminum smelting industry,petroleum chemical industry, ceramic industry and electronics industry. Another while, wealso produceSilcon Nitride Powder,Heater or Thermocouple Protective Tube and so on. We are looking forward to your enquiry.