Product Description：
High temperature silicon nitride thermocouple protection tube is mainly used for casting aluminum and steel. Compared with other types of protective tubes, such as silicon carbide and nitride bonded silicon carbide tubes, it has higher strength and thermal shock resistance, and has a longer life.
Physical and chemical index：
Types | GPSN |
Density | >3.2g/cm3 |
Si3N4 content | >92% |
Flexural strength | >600Mpa |
Compressive strength | >1500Mpa |
Thermal conductivity(W/mk) | >22 |
Porosity | 0 |
Thermal expansion coeff.(RT-1000℃) | 3.2 |
Max temperature in air | 1400℃ |
Hardness(HRA) | >92 |
Features：
1 Moulding: Cold isostatic pressing(CIP)
2 Sintering: GPSN/RSSN (gas pressure sintering, reaction sintering)
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
Recommended Sizes：
OD(mm) | ID(mm) | Length(mm) |
16 | 8 | 300-600 |
22 | 12 | 300-800 |
28 | 16 | 300-1200 |
30 | 18 | 300-1000 |
45 | 25 | 300-1000 |
We can also prodcue other sizes according to your drawing.
Products details:
Application：
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