Crucibles (ceramic crucibles, graphite crucibles, refractory crucibles)
Ceramic Crucibles, Graphite Crucibles, Refractory Crucibles,For Drying, Burning, Melting Or Heating
We offer a range of crucibles suitable for calcinating and melting various alloys.The main quality of a crucible is its ability to withstand temperatures above the melting temperatures of the alloys deposited by metallurgists without altering or polluting the molten metal. In some cases, when a crucible is brought to these very high temperatures, it must be strong enough to withstand being moved for the casting of parts (bronze foundry for example).
Crucibles (ceramic crucibles, graphite crucibles, refractory crucibles) are containers for drying, burning, melting or heating various substances for use in metallurgy, glass industry, growing crystals, laboratory equipment, various high-temperature equipment.
Our team is available to help you choose the crucible and the material that best meet your requirements.
Related Data
| Main component | 99%Al2O3 | S-SiC | ZrO2 | Si3N4 |
Physical
Property | Density | g/cm3 | 3.9 | 3.1 | 6 | 3.2 |
| Water Absorption | % | 0 | 0.1 | 0 | 0.1 |
| Sinter Temperature | °C | 1700 | 2200 | 1500 | 1800 |
Mechanical
Property | Rockwell Hardness | HV | 1700 | 2200 | 1300 | 1400 |
| Bend Strength | kgf/mm2 | 3500 | 4000 | 9000 | 7000 |
| Compression Intensity | Kgf/mm2 | 30000 | 20000 | 20000 | 23000 |
Thermal
Property | Maximum working
temperature | °C | 1500 | 1600 | 1300 | 1400 |
thermal expansion
coefficient
0-1000°C | /°C | 8.0*10-6 | 4.1*10-6(0-500°C) | 9.5*10-6 | 2.0*10-6(0-500°C) |
| 5.2*10-6(500-1000°C) | 4.0*10-6(500-1000°C) |
| Thermal Shock resistance | T(°C) | 200 | 250 | 300 | 400-500 |
| Thermal Conductivity | W/m.k(25°C | 31 | 100 | 3 | 25 |
| 300°C) | 16 | 100 | 3 | 25 |
Electrical
Property | Resisting rate of Volume | ◎.cm | | | | |
| 20°C | >1012 | 106-108 | >1010 | >1011 |
| 100°C | 1012-1013 | – | – | >1011 |
| 300°C | >1012 | – | – | >1011 |
Insulation Breakdown
Intensity | KV/mm | 18 | semiconductor | 9 | 17.7 |
| Dielectric Constant (1 MHz) | (E) | 10 | – | 29 | 7 |
| Dielectric Dissipation | (tg o) | 0.4*10-3 | – | – | – |
Technical Ceramics offers crucibles from the following materials:
- aluminum oxide (corundum, alundum, high-alumina ceramics);
- zirconia;
- silicon carbide;
- graphite and graphite-containing materials;
- graphite with pyrolytic coating;
- pyrolytic boron nitride;
- quartz ceramics and quartz glass;
- refractory ceramics;
- refractory composite materials;
Product Tags:
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White Refractory Ceramic Crucibles Graphite Melting Crucible For Drying Burning Images
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