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Sapphire Rod

Sapphire Rods are available in a choice of 3 diameters and lengths. They have excellent hardness, thermal conductivity and chemical resistance. Due to these properties, they’re used in applications like high temperature furnace tubes, semiconductor wafer carriers and precision ball bearings. Our range of Sapphire Rods provide customizable solutions for engineering projects and research applications needing a hard, durable ceramic material.
Formula: Al₂O₃ 99.9
Diameter: 1.5mm
Length: 15mm
Surface Finish: Ground
CAS Number: 1344-28-1
UOM Code: 916-109-17
SKU: 1000025248
Product Code: AL66-RD-000115

Tolerances

Rod
Diameter +20% / -10%

Tolerances

Rod
Diameter +20% / -10%
Technical Data Sheet
Safety Data Sheet
£290.16
each
  • Buy 5 for £235.03 each and save 19%
  • Buy 10 for £214.72 each and save 26%
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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
Refractive index 1.71-1.79
Useful optical transmission range 200-5500nm
Apparent porosity( % ) 0
Water absorption - saturation( % ) 0
Density( gcm⁻³ ) 3.985
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
Mechanical Properties
Element Value
Tensile modulus( GPa ) 350-390
Hardness - Knoop( kgf mm⁻² ) 2000
Hardness - Vickers( kgf mm⁻² ) 1600-1800
Tensile strength( MPa ) 250-400
Pultrusions
Element Value
Compressive strength( MPa ) 2100
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