catalytic converter substrate

Performance and Material Selection for Metallic Substrates in Extreme Heat

Catalytic converter substrate. High-temperature applications. Gasoline and diesel engines. Turbocharged engines. Heavy-duty vehicles. Metallic substrates.

FeCrAl alloys commonly used. Aluminum-based alloys also applied. Material choice affects thermal stability, mechanical strength, and durability. Substrate wall thickness, cell density, and geometry influence heat distribution. Thin walls. High surface area.

Efficient exhaust flow. Thick walls. Improved mechanical resistance. Thermal cycling. Repeated heating and cooling generate stress. Substrate must withstand expansion and contraction.

Coating adhesion critical. Oxidation-resistant metals reduce degradation. Mounting and system integration affect vibration and thermal load. High-flow systems demand stronger metallic cores. Performance testing includes thermal shock, flow resistance, vibration endurance.

Proper substrate material, geometry, and coating ensure long-term reliability in extreme heat environments.