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Goodfellow Ruby, Al2O3

Category	Ceramic , Oxide , Aluminum Oxide
Manufacturer	Goodfellow
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Goodfellow Ruby, Al2O3.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Ruby exhibits identical properties to those of sapphire. Small amounts of impurities, especially chromium oxide, give ruby a red coloration. Useful optical range from 150 - 5500 nm.Information provided by Goodfellow.

Physical Properties	Metric	English	Comments
Density	3.98 g/cc	0.144 lb/in³
Water Absorption	0.00 %	0.00 %
Porosity	0.00 %	0.00 %	apparent

Mechanical Properties	Metric	English	Comments
Knoop Microhardness	2000	2000	kg(f)/mm²
Vickers Microhardness	2500 - 3000	2500 - 3000	kg(f)/mm²
Tensile Strength at Break	250 - 400 MPa	36300 - 58000 psi
Tensile Modulus	350 - 390 GPa	50800 - 56600 ksi
Compressive Strength	2100 MPa	305000 psi

Thermal Properties	Metric	English	Comments
CTE, linear	5.80 µm/m-°C @Temperature 20.0 - 1000 °C	3.22 µin/in-°F @Temperature 68.0 - 1830 °F
Specific Heat Capacity	0.750 J/g-°C	0.179 BTU/lb-°F
Thermal Conductivity	35.0 - 40.0 W/m-K	243 - 278 BTU-in/hr-ft²-°F
Melting Point	2050 °C	3720 °F
Maximum Service Temperature, Air	1800 - 1950 °C	3270 - 3540 °F	Continuous

Electrical Properties	Metric	English
Electrical Resistivity	1.00e+14 ohm-cm @Temperature 25.0 °C	1.00e+14 ohm-cm @Temperature 77.0 °F
Dielectric Constant	7.5 - 11.5	7.5 - 11.5
Dielectric Strength	15.0 - 50.0 kV/mm	381 - 1270 kV/in

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