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Ceramic Substrate
As a special kind of chemical reaction device, the catalyst converter is used for the control of automobile exhaust emissions with the ceramic substrate as its key part. Now the world recognized kind is the honeycomb ceramic substrate.
The ceramic substrate has very low thermal expansion coefficient, high specific surface area, low pressure drop, rapid light-off and unique structures. Thousands of cells provide high surface for precious metal catalysts that convert noxious emission into water vapor, carbon dioxide and so on.
 
Chemical Composition & Physical Properties:
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Items
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Parameters
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Chemical Composition
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SiO2(%)
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49~51
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Al2O3(%)
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33~35
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MgO(%)
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13~14
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Wall thickness
(mm)
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100CPSI
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0.43
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200CPSI
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0.32
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300CPSI
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0.30
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400CPSI
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0.18
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600CPSI
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0.15
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Compressive Strength
(MPa)
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A—Cut (Parallel to Channels)
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≥8
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B—Cut (Vertical to Channels)
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≥1.5
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Water Absorption (%)
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25±2
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Coefficient of Thermal Expansion(40-800℃)/℃
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0.8~2.0×10-6
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Maximum Operating Temperature(℃)
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≥1370
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Bulk Density(Kg/L)
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0.43~0.75
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