Ruby Bar

Ruby Bar is made of synthetic ruby which is an extremely hard and durable material composed of aluminum oxide crystals. The hardness and strength of ruby make this product well-suited for applications requiring high wear resistance, such as bearings for precision instruments. The corrosion resistance of ruby also makes it ideal for use in harsh environments. With its exceptional physical properties, Ruby Bar can meet demanding mechanical and chemical performance requirements across many industries.

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Tolerance

Properties

Reference & Citations

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Tolerances

Bar

Side Length	=<10mm	±10%
Side Length	>10mm	±1mm
Side Length (Of Longer Side)	>10mm	±1mm
Side Length (Of Longer Side)	=<10mm	±10%
Length	<100mm	±1mm
Length	>=100mm	+5% / -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