Sialons Type Si3N4(Sintered Silicon Nitride)Thermocouple Protection Ceramic Tube
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.
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