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Ruby exhibits identical properties to those of Sapphire. Small amounts of impurities give Ruby a red colour.
See where Ruby falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.
3.98 g/cm³ at 20 °C
Water absorption, equilibriumcwater,equib
0 % at 20 °C
Coefficient of thermal expansionα
5.8E-6 1/K at 100 °C
Max service temperature, continuousTmax,cont
1800 - 1950 °C
Specific heat capacitycp
750 J/(kg·K) at 25 °C
35 - 40 W/(m·K) at 20 °C
7.5 - 11.5 [-] at 20 °C
15 - 50 kV/mm at 20 °C
1.00E+12 Ω·m at 25 °C
Good chemical resistance to: Acids (concentrated and diluted), alkalis, halogens, metals
Useful optical transmission range: 150-5500nm
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This material data has been provided by Goodfellow.