Cordierite filter VS SiC filter

The choice between cordierite and silicon carbide filter elements should be based on the specific application scenario and your budget: ‌‌

Performance comparison ‌

SiC filter element ‌ :

It has higher high-temperature resistance (up to 1600℃) and mechanical strength, and is suitable for high-pressure and high-temperature environments (such as exhaust gas treatment for heavy and light trucks).

The filtration accuracy range is wider (0.1μm to 10μm), and it is more stable under extreme working conditions

Cordierite filter element ‌ :

It has a low cost and is suitable for medium and low-temperature, low-pressure scenarios (such as exhaust gas treatment of small and medium-sized diesel engines).

It has a lower coefficient of thermal expansion, but microcracks may occur under long-term high temperatures, affecting its lifespan

Differences in application fields ‌

SiC is mainly used in high-end fields:

Recrystallized silicon carbide has been verified in Europe and America and is applied in high-temperature flue gas dust removal, coal chemical synthesis gas filtration, etc

In diesel particulate filters (DPF), silicon carbide can withstand a higher frequency of regenerative combustion cycles, especially in line with the China National VI emission standards

Cordierite is suitable for the mid-to-low-end market.

It is commonly seen in small equipment that operates intermittently, such as the exhaust gas treatment of some agricultural machinery or urban logistics vehicles

Economic considerations ‌

The price of SiC is usually 2 to 3 times that of cordierite, but its service life can be extended by more than 50%, and the long-term maintenance cost is lower

If your budget is limited and the working conditions are mild (such as fixed generators), cordierite still has a cost-performance advantages.

Conclusion: For harsh working conditions, SiC is preferred; for medium and low-load scenarios, cordierite is more economical. 

Supreme Ceramics can supply high quality cordierite filters and SiC filters for users from EU, Asia, Latin America, and other areas.