CeramTec Rubalit® A 1896 brown Alumina

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CeramTec Rubalit® A 1896 brown Alumina
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	CeramTec AG's seal and regulator discs are made mainly of Rubalit® A 1896, a material developed especially for this application that is noted for the following special properties: outstanding hardness - A diamond-grade surface hardness effectively prevents wear. Solid foreign particles are crushed and flushed out; chemical inertia - The material does not react with water. Given its resistance to acid and caustic attack, Rubalit® A 1896 is suitable not only for sanitary fittings but also for industrial use; and no aging - The material's all-mineral structure remains unchanged over extended periods of use.
Key Words:	Al2O3, aluminum oxide
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Physical Properties	Original Value	Comments

Density	3.82 g/cc
Water Absorption	0.00 %
Permeability	0.00	Gas
Weibull Modulus	>= 12

Mechanical Properties	Original Value	Comments
Vickers Microhardness	1330	HV 0.5
Tensile Modulus	350 GPa	Young's
Flexural Strength	350 MPa
Compressive Strength	3490 MPa

Thermal Properties	Original Value	Comments
CTE, linear	4.20 µm/m-°C @Temperature 20.0 - 200 °C
Specific Heat Capacity	0.900 J/g-°C @Temperature 20.0 - 100 °C
Thermal Conductivity	24.0 W/m-K @Temperature 20.0 - 100 °C

Descriptive Properties
Color	Brown
Ra = Arithmetic Mean Roughness Value (µm)	0.2
Surface Contact Area (%)	60-80
Thermal Shock Resistance R1 (K)	150

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CCERA962 / 107562

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