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What is SiC silicon carbide tube?
SiC (silicon carbide) protection tube is a type of ceramic tube is used to shield temperature sensors from damage in challenging conditions, especially high temperatures and corrosive atmospheres.
The silicon and carbon combination used to make SiC protection tubes offers superior mechanical strength, heat conductivity, and resistance to oxidation and corrosion.
Silicon carbide protection tube is silicon carbide products for Industrial and Sintering Applications, with high-strength properties comparable to diamond.
Silicon carbide tubes properties
Silicon carbide protective tube is an ideal high performance material, the most commendable properties of this material are as follows:
It can withstand high temperature of 2000℉ without significant reduction in material strength
Good thermal shock resistance
Universal corrosion resistance. The product is resistant to acid and alkali corrosion. It is an ideal substitute for domestic chemical industry
Its high thermal conductivity is five times that of stainless steel
Special wear resistance — 1.5 times of tungsten carbide
SiC Silicon Carbide Thermocouple Protection Tube
The products have the characteristics of high flexing strength at elevated temperatures, high thermal shock resistance. High corrosion resistance and high thermal conductivity, high resistivity against alkalis.
Silicon Carbide Tube Specifications
Available Tube Diameter: 3/4″ to 9″ for American size and 20 mm to 150 mm for metric unit.
| Recrystallized SiC | Sintered SiC | Reaction Bonded SiC | |
| Purity of Silicon Carbide | 99.5% | 98% | > 88% |
| Max. Working Temp. (`C) | 1650 | 1550 | 1300 |
| Bulk Density (g/cm3) | 2.7 | 3.1 | > 3 |
| Appearance Porosity | 2.5 | 0.1 | |
| Flexural strength (MPa) | 110 | 400 | 380 |
| Compressive strength (MPa) | > 300 | 2200 | 2100 |
| Thermal expansion (10^-6/`C) | 4.6 (1200℃) | 4.0 ( | 4.4 ( |
| Thermal conductivity (W/m.K) | 35~36 | 110 | 65 |
| Main characteristics | High temp. High resistance. High purity |
Fracture Toughness | Chemical Resistance |
Recrystallization and reaction sintering silicon carbide tubes
Silicon carbide protective tube includes two kinds of recrystallization and reaction sintering.silicon carbide reaction sintering can be up to 1300 degrees.
Recrystallized products are produced at 2200 degrees of high temperature,it can withstand 1800 degrees of high temperature and it is also invariable.
It has the characteristics of high compactness, impermeable to water, air permeability, strong bending resistance, acid resistance, alkali resistance, wear resistance, corrosion resistance.
It can be used in copper water, aluminum water, and other alloy solution. It is the best protection of thermocouple.
It can also be used for the protection of silicon carbon rods.
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