Syalon Silicon Nitride Tube Thermocouple Sheath
Product Description
1. Introduction
Silicon nitride thermocouple protection tube usually made by CIP (cold isostatic pressing) / RB(reaction bonded) , both are have excellent abrasion resistance and corrosion resistance , and can be used under 1400°C .
2. Physical and chemical index
Types |
GPSN |
RSSN |
Density |
>3.2g/cm3 |
>2.4g/cm3 |
Si3N4 content |
>92% |
>92% |
Flexural strength |
>600Mpa |
>200Mpa |
Compressive strength |
>1500Mpa |
|
Thermal conductivity(W/mk) |
>22 |
>14 |
Porosity |
0 |
<15% |
Thermal expansion coeff.(RT-1000ºC) |
3.2 |
2.8 |
Max temperature In air |
1400ºC |
1400ºC |
Hardness(HRA) |
>92 |
>85 |
3. Features
1, Moulding: Cold isostatic pressing(CIP)
2, Sintering: GPSN/RSSN
3, High strength and good compactness
4, Low thermal expansion coefficient
5, Excellent thermal shock resistance
6, No wetting by molten aluminum and non-ferrous metal
7, Good corrosion resistance
4. Recommended Sizes
OD(mm) |
ID(mm) |
Length(mm) |
16 |
8 |
300-750 |
22 |
12 |
300-900 |
28 |
16 |
300-1200 |
30 |
18 |
300-1000 |
45 |
25 |
300-1000 |
We can also produce other sizes according to your drawing.
5. Application:
Widly used in aluminium alloy casting ,non-ferrousmetal metallurgy ect.