Ruby Single Crystal

Ruby Single Crystal is a type of single crystal offered by Goodfellow within their range of advanced engineered materials. Ruby has outstanding hardness, thermal conductivity, and chemical resistance. Its key properties make ruby well suited to applications like bearings, laser optics, and semiconductor substrates. With precise control of structure, Goodfellow produces high-quality ruby single crystals to meet the stringent requirements of research and industry.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Single Crystal

Orientation		See Item
Thickness		+2% / -1%
Length		+2% / -1%

Material Properties for Ceramics

Chemical Resistance

Element	Value
Acids - concentrated	Good
Acids - dilute	Good
Alkalis	Good
Halogens	Good
Metals	Good

Electrical Properties

Element	Value
Dielectric constant	7.5-11.5
Dielectric strength( kV mm⁻¹ )	15-50
Volume resistivity( Ohmcm )	10¹⁴@25

Physical Properties

Element	Value
Useful optical transmission range	150-5500nm
Apparent porosity( % )	0
Water absorption - saturation( % )	0
Density( gcm⁻³ )	3.98

Thermal Properties

Element	Value
Melting point( C )	2050
Upper continuous use temperature( C )	1800-1950
Specific heat( J K⁻¹ kg⁻¹ )	750@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	35-40@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	5.8@20-1000°C