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CeramTec Rubalit® A 1896 Alumina

Category	Ceramic , Oxide , Aluminum Oxide
Manufacturer	CeramTec North America
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	CeramTec Rubalit® A 1896 Alumina.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Rubalit® A 1896 (96%) is an aluminum oxide ceramic with an optimum price/performance ratio. Its outstanding properties are low density, low weight, high corrosion and wear resistance, excellent electrical insulation, and anti-friction properties for sliding materials such as sintered metal, carbon, and glass-fiber reinforced plastic. A polishing process opens the pores on the sliding surfaces, enabling the material to absorb lubricants and solid particles.

Physical Properties	Metric	English	Comments
Density	3.73 g/cc	0.135 lb/in³	DIN EN 623-2
Water Absorption	0.00 %	0.00 %	DIN EN 623-2
Porosity	5.0 %	5.0 %	closed (approximate vol. %)
Permeability	0.00	0.00	%, Gas
Weibull Modulus	>= 10	>= 10	DINV ENV 843-5

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	1520	1520	HV 0.5; DINV ENV 843-4
Tensile Strength at Break	330 MPa	47900 psi	ACMA Test #4 / DIN EN 843-1
Tensile Modulus	330 GPa	47900 ksi	Young's; DINV ENV 843-2
Flexural Strength	330 MPa	47900 psi	DIN EN 843-1
Compressive Strength	3400 MPa	493000 psi	DIN 51067T1
Poissons Ratio	0.23	0.23	DINV ENV 843-2
Fracture Toughness	4.00 MPa-m½	3.64 ksi-in½	K<sub>IC</sub>; DIN 51109
Shear Modulus	134 GPa	19400 ksi	Calculated

Thermal Properties	Metric	English	Comments
CTE, linear	5.40 µm/m-°C @Temperature 20.0 - 200 °C	3.00 µin/in-°F @Temperature 68.0 - 392 °F	DIN EN 821-1
	6.90 µm/m-°C @Temperature 20.0 - 400 °C	3.83 µin/in-°F @Temperature 68.0 - 752 °F	DIN EN 821-1
	7.50 µm/m-°C @Temperature 20.0 - 600 °C	4.17 µin/in-°F @Temperature 68.0 - 1110 °F	DIN EN 821-1
	8.30 µm/m-°C @Temperature 20.0 - 1000 °C	4.61 µin/in-°F @Temperature 68.0 - 1830 °F	DIN EN 821-1
Specific Heat Capacity	0.900 J/g-°C @Temperature 20.0 - 100 °C	0.215 BTU/lb-°F @Temperature 68.0 - 212 °F	DINV ENV 821-3
Thermal Conductivity	24.0 W/m-K @Temperature 20.0 - 100 °C	167 BTU-in/hr-ft²-°F @Temperature 68.0 - 212 °F	DIN EN 821-2
Maximum Service Temperature, Air	1450 °C	2640 °F
Maximum Service Temperature, Inert	1450 °C	2640 °F

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+7 ohm-cm @Temperature 800 °C	>= 1.00e+7 ohm-cm @Temperature 1470 °F	IEC 672-1
	>= 1.00e+11 ohm-cm @Temperature 400 °C	>= 1.00e+11 ohm-cm @Temperature 752 °F	IEC 672-1
	>= 1.00e+14 ohm-cm @Temperature 20.0 °C	>= 1.00e+14 ohm-cm @Temperature 68.0 °F	IEC 672-1
Dielectric Constant	10 @Frequency 1.00e+7 Hz	10 @Frequency 1.00e+7 Hz	IEC 672-1
Dielectric Strength	20.0 kV/mm	508 kV/in	IEC 672-1
Dielectric Loss Index	0.0010 @Frequency 1.00e+7 Hz	0.0010 @Frequency 1.00e+7 Hz	IEC 672-1

Descriptive Properties	Value	Comments
Color	White
Surface Contact Area (%)	60-80
Thermal Shock Resistance R1 (K)	118	R1 = [s? (1-µ)] / (a·E)

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