CeramTec 950 Zirconia Toughened Alumina (ZTA), Al2O3•ZrO2

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CeramTec 950 Zirconia Toughened Alumina (ZTA), Al2O3•ZrO2
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	950 has a combination of high strength (from zirconia) and high hardness (from the alumina phase). It has excellent wear resistance, both in sliding and abrasive conditions. This material offers a good compromise between toughened zirconia and alumina. It is a good choice for applications that require higher strength but lower hardness compared with alumina (e.g., textile wear parts). Produced with total dispersion of the zirconia phase in the alumina phase, 950 offers consistent performance, lot to lot.
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Physical Properties	Original Value	Comments

Density	4.40 g/cc	DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption	0.00 %	DIN EN 623-2 / ASTM-C373

Mechanical Properties	Original Value	Comments
Vickers Microhardness	1500	HV 0.5; DINV ENV 843-4
Tensile Strength at Break	414 MPa	ACMA Test #4 / DIN EN 843-1
Tensile Modulus	289 GPa	Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength	680 MPa	20 x 40 mm
Compressive Strength	2890 MPa	ASTM C-773-88 / DIN 51067T1
Poissons Ratio	0.22	DINV ENV 843-2
Fracture Toughness	6.00 MPa-m½	DIN 51109
Shear Modulus	126 GPa

Thermal Properties	Original Value	Comments
CTE, linear	8.80 µm/m-°C	DIN EN 821-1
	6.90 µm/m-°C @Temperature 20.0 - 200 °C
	7.80 µm/m-°C @Temperature 20.0 - 600 °C	ASTM-C373
	8.30 µm/m-°C @Temperature 20.0 - 1000 °C
Specific Heat Capacity	0.600 J/g-°C @Temperature 100 - 200 °C	DINV ENV 821-3
Thermal Conductivity	15.0 W/m-K	DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air	1500 °C

Descriptive Properties
Color	Buff
Te Value (°C)	> 1000
Thermal Shock Resistance R1 (K)	250	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 go back to viewing the property data in MatWeb's normal format.

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CCERA936 / 107536

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