CeramTec 447 Cordierite

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CeramTec 447 Cordierite
Categories:	Ceramic; Oxide; Aluminum Oxide; Magnesium Oxide; Silicon Oxide
Material Notes:	Cordierites have low coefficients of thermal expansion and excellent resistance to thermal shock. They offer a range of thermal expansion, mechanical strength, and porosity criteria. They excel as cost-effective extruded and dry-pressed forms. 447 offers excellent thermal shock resistance with high continuous porosity, suitable for applications such as welding tile.
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Physical Properties	Metric	English	Comments

Density	1.80 g/cc	0.0650 lb/in³	DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption	14 - 17 %	14 - 17 %	DIN EN 623-2 / ASTM-C373

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	280	280	HV 0.5; DINV ENV 843-4
Tensile Strength at Break	17.2 MPa	2490 psi	ACMA Test #4 / DIN EN 843-1
Tensile Modulus	125 GPa	18100 ksi	Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength	23.4 MPa	3390 psi	20 x 40 mm
Compressive Strength	123 MPa	17800 psi	ASTM C-773-88 / DIN 51067T1
Poissons Ratio	0.20	0.20	DINV ENV 843-2
Shear Modulus	50.0 GPa	7250 ksi

Electrical Properties	Metric	English	Comments
Volume Resistivity	700000 ohm-cm @Temperature 900 °C	700000 ohm-cm @Temperature 1650 °F
	4.90e+7 ohm-cm @Temperature 500 °C	4.90e+7 ohm-cm @Temperature 932 °F
	1.00e+13 ohm-cm @Temperature 100 °C	1.00e+13 ohm-cm @Temperature 212 °F	IEC 672-1
	1.00e+14 ohm-cm @Temperature 25.0 °C	1.00e+14 ohm-cm @Temperature 77.0 °F	ASTM-D257
Dielectric Constant	4.1 @Frequency 1e+6 Hz	4.1 @Frequency 1e+6 Hz	IEC 672-1 / ASTM-C150
Dielectric Strength	2.362 kV/mm	59.99 kV/in	6.35 mm (1/4") IEC 672-1
Dissipation Factor	0.012 @Frequency 1e+6 Hz	0.012 @Frequency 1e+6 Hz
Dielectric Loss Index	0.048 @Frequency 1e+6 Hz	0.048 @Frequency 1e+6 Hz	IEC 672-1 / ASTM-D149,150

Thermal Properties	Metric	English	Comments
CTE, linear	0.600 µm/m-°C @Temperature 20.0 - 200 °C	0.333 µin/in-°F @Temperature 68.0 - 392 °F
	1.50 µm/m-°C @Temperature 20.0 - 600 °C	0.833 µin/in-°F @Temperature 68.0 - 1110 °F	ASTM-C373
	1.70 µm/m-°C @Temperature 20.0 - 1000 °C	0.944 µin/in-°F @Temperature 68.0 - 1830 °F
Specific Heat Capacity	0.700 J/g-°C @Temperature 100 - 200 °C	0.167 BTU/lb-°F @Temperature 212 - 392 °F	DINV ENV 821-3
Thermal Conductivity	1.70 W/m-K	11.8 BTU-in/hr-ft²-°F	DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air	1100 °C	2010 °F

Descriptive Properties
Color	Brown
Te Value (°C)	850
Thermal Shock Resistance R1 (K)	800		Hasselman (Experimental)

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CCERA925 / 107525

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