NSiC Protection Tube

Nitride Bonded Silicon Carbide (NSiC) protection tubes are widely used to protect temperature sensors (thermocouples) in high-temperature and corrosive environments such as metal melting, heat treatment, and industrial furnaces. Their superior durability and thermal properties make them a trusted choice for long service life and accurate temperature control.

Key Features:

  • Excellent thermal shock resistance
    Withstands sudden temperature changes without cracking.
  • High working temperature
    Suitable for continuous use in temperatures up to 1450°C.
  • Outstanding corrosion resistance
    Resists chemical attack from molten metals, slags, and fluxes.
  • Non-wetting to molten aluminum
    Prevents metal adhesion and reduces contamination risks.
  • Mechanical strength and long service life
    Performs well in tough environments with minimal maintenance.

Applications:

  • Thermocouple protection in aluminum and non-ferrous metal furnaces
  • Temperature monitoring in melting and holding furnaces
  • Heat treatment and forging industries
  • Chemical and petrochemical process equipment

其他信息

Chemical Composition

SiC ≥65%
Si3N4 ≥25%

Apparent Porosity

10-12%

Bulk Density

2.75-2.85 g/cm3

Compressive Strength

600-700 MPa

Modulus of Rupture at 20℃

160-180MPa

Modulus of Rupture at 1200℃

170-200 MPa

Thermal Conductivity at 1200℃

20-30 w/m.k

Thermal Expansion at 1200ºC

4.7 x10-6.K-1

Creep Resistance

★★★★★

Max.Working Temperature

1550℃