CeramTec 433 Alumina, 99.9%

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CeramTec 433 Alumina, 99.9%
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	433 (99.9%) is an alumina that exhibits high hardness. Its fine, equiaxial microstructure provides excellent sliding and abrasive wear resistance. This material is ideal for corrosive conditions. A higher degree of surface finish (approaching 0.2 µin., Ra) is available for applications such as textile guides and mechanical seals.
Key Words:	Al2O3, aluminum oxide
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Physical Properties	Metric	English	Comments

Density	4.00 g/cc	0.145 lb/in³	DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption	0.00 %	0.00 %	DIN EN 623-2 / ASTM-C373

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	2000	2000	HV 0.5; DINV ENV 843-4
Tensile Strength at Break	241 MPa	35000 psi	ACMA Test #4 / DIN EN 843-1
Tensile Modulus	400 GPa	58000 ksi	Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength	414 MPa	60000 psi	20 x 40 mm
Compressive Strength	2700 MPa	392000 psi	ASTM C-773-88 / DIN 51067T1
Poissons Ratio	0.30	0.30	DINV ENV 843-2
Fracture Toughness	4.20 MPa-m½	3.82 ksi-in½	DIN 51109
Shear Modulus	138 GPa	20000 ksi

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+14 ohm-cm	>= 1.00e+14 ohm-cm	ASTM-D257
Dielectric Constant	10 @Frequency 1e+6 Hz	10 @Frequency 1e+6 Hz	IEC 672-1 / ASTM-C150

Thermal Properties	Metric	English	Comments
CTE, linear	8.00 µm/m-°C	4.44 µin/in-°F	DIN EN 821-1
	6.70 µm/m-°C @Temperature 20.0 - 200 °C	3.72 µin/in-°F @Temperature 68.0 - 392 °F
	7.70 µm/m-°C @Temperature 20.0 - 600 °C	4.28 µin/in-°F @Temperature 68.0 - 1110 °F	ASTM-C373
	8.20 µm/m-°C @Temperature 20.0 - 1000 °C	4.56 µin/in-°F @Temperature 68.0 - 1830 °F
Specific Heat Capacity	0.900 J/g-°C @Temperature 100 - 200 °C	0.215 BTU/lb-°F @Temperature 212 - 392 °F	DINV ENV 821-3
Thermal Conductivity	37.0 W/m-K	257 BTU-in/hr-ft²-°F	DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air	1550 °C	2820 °F

Component Elements Properties	Metric	English	Comments
Al2O3	99.9 %	99.9 %

Descriptive Properties
Color	Light Pink
Thermal Shock Resistance R1 (K)	225		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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CCERA935 / 107535

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