Corundum-saggers (also referred to as corundumcrucibles or saggars) are ceramic vessels used for high temperature applications that feature corundum crystals from aluminum oxide (Al2O3) that possess superior chemical and thermal resistance properties.
Corundum is often utilized in industries like ceramics, metallurgy and powder processing. Engineered to withstand extreme temperatures while providing protection for materials during heat or firing processing processes. These saggars exhibit exceptional thermal stability, being capable of withstanding temperatures as high as 1800C (3270degF).
Corundum Saggars boast outstanding chemical resistance, making them ideal for use in atmosphere or corrosive substances. Corundum saggars boast durable mechanical properties that enable them to withstand even extreme conditions without losing integrity of their structure. Resistant to thermal shock and capable of withstanding several cycles of heating and cooling without suffering major damages, corundum saggars offer optimal performance under adverse circumstances.
Corundum saggars are frequently utilized for firing ceramics and sintering powders at high temperatures, heat treating metals and other processes requiring high temperatures that require material protection at such extreme temperatures. Corundum saggars serve as solid containers that must ensure chemical and thermal stability as well as mechanical strength during processing of high temperature materials requiring special protection during processing.
Properties | Unit | Corundum |
Al₂O₃ | % | ≥90 |
Al2O3+ SiO2(%) | % | >97 |
Fe2O3(%) | % | <0.5 |
Refractoriness under load | ℃ | ≥1700 |
Apparent Porosity | % | 13-20 |
Bulk Density | g/cm3 | 2.85-3.2 |
Normal temperature compressive strength | Mpa | ≥70 |
Thermal shock reslatance | Good |