DENSE CORDIERITES. This group includes dense cordierite, either alkaline earth or zircon based. Cordierite C410 is often found in insulating applications, heating cartridges or electrical engineering. The group C500 includes the aluminosilicate magnesium materials. The most important crystalline phase in these compositions is cordierite (2MgO.2Al₂O₃.5MgO), and the most important property is its low thermal expansion coefficient and its good mechanical resistance. Some examples of applications are the following: insulators for continuous flow electric water heaters, heating element pipes, heating element supports in furnaces, link heaters, heating cartridges for soldering irons, gas heater inserts, spark protectors and catalyst carriers in car industry.
POROUS CORDIERITES. In the past years, cordierite-based porous ceramics have become more and more important, as light structural materials, thermal insulating or catalyst supports, among other examples. This group includes the sub-groups C510, C511 and C512, which are compositions with different cordierite and porosity contents. C520 compositions have higher cordierite content and less porosity. C530 compositions have some mullite percentage due to its higher alumina content. Cordierite materials behave inertly towards heating element alloys at temperatures up to 1,000°C or even at 1,200°C (there is no reaction between the heating element and the ceramic). For this reason, cordierites are often found in electric heating applications. Some examples of current applications are: flow electric water heaters, heating element pipes, heating element supports in furnaces, link heaters, heating cartridges for soldering irons, gas heater inserts, spark protectors catalyst carriers in car industry and so on.
Some of our standard cordierite products are: COR-22-AT, COR-NEX-AT, COR-CANDEL-AT, COR-MUL-PO. See our Technical Ceramics catalogue and don’t hesitate to contact us for more information (Technical Data Sheets) or any new development you may need