Technical Data Sheet
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Alumina Rod

Our Alumina Rods are a selection of high-purity alumina ceramic rods with 53 variations to choose from. These rods boast high hardness, exceptional electrical insulation, and superior resistance to wear and corrosion. Their distinctive properties make Alumina Rods popular across a multitude of scientific and industrial purposes, including applications like electrical insulators, wear-resistant components and crucibles for molten metal processing. This versatile ceramic range of rods promotes innovation across a wide array of industries and disciplines.
Formula: Al₂O₃
Diameter: 4mm
Length: 200mm
CAS Number: 1344-28-1
UOM Code: 351-263-66
SKU: 1000023783
Product Code: AL60-RD-000141


Diameter +20% / -10%
No Minimum order Despatch of products in stock within 48 hours Free technical support *Free delivery worldwide
  • Buy 5 for $175.46 each and save 19%
  • Buy 10 for $160.29 each and save 26%

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Diameter +20% / -10%
Technical Data Sheet
Safety Data Sheet

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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 9-10.1
Dielectric strength( kV mm⁻¹ ) Oct-35
Volume resistivity( Ohmcm ) >10¹⁴@25
Physical Properties
Element Value
Apparent porosity( % ) 0
Water absorption - saturation( % ) 0
Density( gcm⁻³ ) 3.9
Thermal Properties
Element Value
Melting point( C ) 2100
Upper continuous use temperature( C ) 1700
Specific heat( J K⁻¹ kg⁻¹ ) 850-900@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 26-35@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8@20-1000°C
Mechanical Properties
Element Value
Tensile modulus( GPa ) 300-400
Hardness - Knoop( kgf mm⁻² ) 2100
Hardness - Vickers( kgf mm⁻² ) 1500-1650
Shear strength( MPa ) 330
Tensile strength( MPa ) 260-300
Element Value
Compressive strength( MPa ) 2200-2600
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