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Advanced Ceramic Solutions for Aluminum Casting
Silicon Nitride Heater Protection Tube
for Molten Aluminum
A silicon nitride heater protection tube is a high-performance ceramic sheath designed to protect immersion heating elements in molten aluminum.
Its thermal conductivity, low wettability and thermal shock resistance support efficient heat transfer while reducing aluminum buildup and maintenance.
Technical Specifications
Physical
Resistivity: 10^14 Ω · cm
Thermal
Thermal conductivity: 26 W/(m · K)
Specific heat: 0.65 J/(g · K)
Thermal shock resistance: 800 °C (1,472 °F)
Max operation temperature: 1,150 °C (2,102° F)
Coefficient of linear expansion: 3.4 x 10-6 m/°C
Mechanical
Bending strength: 750 MPa
Young’s modulus: 280 GPa
Fracture toughness: 6.5 MPa · m1/2
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