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Formula: BeO 99.5
Form: Rod
Material: Beryllium Oxide
CAS Number: 1304-56-9
Commodity: Ceramics
Length: 150mm
Beryllium Oxide Rod exhibits an exceptional combination of high thermal conductivity, electrical insulation, and mechanical strength, making it a critical material in advanced electronics, aerospace, and nuclear engineering. Its unique ability to conduct heat while electrically isolating components enables efficient thermal management in high-power semiconductor devices, microwave tubes, and laser systems. Industries rely on beryllium oxide rods for components in high-frequency electronics, precision optical mounts, and thermal control elements in space hardware. Specific applications include heat spreaders in RF amplifiers, dielectric supports in vacuum electronics, and substrates for high-reliability circuit assemblies. In research, Beryllium Oxide Rod is valued for studying thermal transport in ceramics, developing radiation-resistant insulators, and designing next-generation high-temperature electronic packaging. The rare combination of thermal efficiency, dielectric properties, and structural integrity ensures its continued importance in both industrial innovation and scientific exploration.

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Tolerances

Rod
Diameter +20% / -10%

Material Properties for Ceramics

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Fair
Alkalis Fair
Halogens Fair
Metals Good
Electrical Properties
Element Value
Dielectric constant 6.5-7.5
Dielectric strength( kV mm⁻¹ ) Oct-14
Volume resistivity( Ohmcm ) >10¹⁴@25
Physical Properties
Element Value
Apparent porosity( % ) 0
Water absorption - saturation( % ) 0.07
Density( gcm⁻³ ) 2.86
Thermal Properties
Element Value
Upper continuous use temperature( C ) 1800-1900
Specific heat( J K⁻¹ kg⁻¹ ) 1020-1120@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 260-300@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.4-9@20-1000°C
Mechanical Properties
Element Value
Tensile modulus( GPa ) 340-400
Hardness - Vickers( kgf mm⁻² ) 1100-1300
Shear strength( MPa ) 180-250
Pultrusions
Element Value
Compressive strength( MPa ) 1550-1850

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