High Purity Silicon Nitride Ceramic Thermal Conductivity , Strengthful Ceramic Heating Rod

Basic Information
Place of Origin: YIXING, CHINA
Brand Name: FFTC
Certification: ISO9001:2008
Minimum Order Quantity: 100pcs
Price: Negotiation
Packaging Details: carton and wooden crate
Delivery Time: 3 - 4 weeks
Payment Terms: MoneyGram, T/T
Supply Ability: 1000000/year
Application: Industrial Ceramic Color: Gray
Type: Ceramic Tubes Material: Alumina Ceramic
Sample: Available Density: 3.2g/cm3
Shape: Pipe Bending Strength: 800
High Light:

ceramic heating rod


silicon nitride substrate

High purity and strength good thermal conductivity silicon nitride ceramic rod



1. Long service life

2. Sintering: GPSN/RSSN (gas pressure sintering, reaction sintering)

3. Good abrasive resistance
4. Excellent thermal shock resistance
5. Top refractory
6. Reduced maintenance requirements and ease of maintenance
7. Anti-corrosion in the high-temperature
8. Perfect electrical insulation resistance
9. Customization available




Silicon nitride ceramic is a kind of superhard material, which has lubricity and wear resistance. It does not react with other inorganic acids except hydrofluoric acid (reaction equation: Si3N4+4HF+9H2O=====3H2SiO3 ( Precipitation) +4NH4F), strong anti-corrosion ability, anti-oxidation at high temperature. Moreover, it can withstand cold and hot shock, and is heated to above 1 000℃ in air, and is rapidly cooled and heated rapidly without breaking.



Product Description

Silicon nitride (Si3N4) feature an excellent combination of material properties. They are nearly as light as silicon carbide (SiC), but their microstructure gives them excellent thermal shock resistance and their high fracture toughness makes them resistant to impacts and shocks.

Its applications as balls and rolling elements for light and extremely precise bearings, heavy-duty ceramic forming tools and automotive components subject to high stress. And the good thermal shock resistance and high temperature resistance is exploited in welding processes.

Bulk density Kg/m3 3.2×103
Water absorption % 0
Mechanical properties Vickers hardness load 500g (GPa) 13.9
  Flexural strength MPa 610
  Compressive strength MPa 3820
  Young's modulus of elasticity GPa 290
  Poisson's ratio - 0.28
  Fracture toughness MPa√m 5
Thermal characteristics Linear thermal expansion coefficient 40-400℃ ×10-16/℃ 2.6
    40-800℃   3.2
  Thermal conductivity W/(m·K) 20
  Specific heat J/(kg·K) 0.66×103
  Thermal shock resistance(Put into the water) 550
Electrical characteristics Dielectric strength V/m 10×106
  Volume resistivity 20℃ Ω·cm >1014
    300℃   1012
    500℃   1010
  Dielectric constant (1MHz) - -
  Dielectric loss angle (1MHz) (×10-4) -
  Loss factor (×10-4) -
Chemical properties Nitric acid (60%) 90℃

WT Loss


  sulfuric acid (95%) 95℃   0.40
  Sodium hydroxide (30%) 80℃   0.36



Packing and Delivery

We pack our goods in wooden case.

We send goods by Sea/Air/Express timely and saftely.

High Purity Silicon Nitride Ceramic Thermal Conductivity , Strengthful Ceramic Heating Rod 0



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