Technical Data Sheet
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Alumina Cylindrical Crucible

The Alumina Cylindrical Crucible is a part of Goodfellow's range of crucibles for high temperature applications. Available in a variety of sizes, with diameters between 10 mm and 150 mm, and heights between 10 mm and 300 mm, there are 40 different variations in total. The high purity alumina construction gives the crucibles excellent thermal shock resistance and chemical inertness. Typical applications include container vessels for high temperature melting and reactions, such as in metallurgy, glass making, and crystal growth.
Capacity: 2.5ml
Outside Diameter: 16mm
Inside Diameter: 13.5mm
Height: 21mm
Technical Name: Alumina
Formula: Al₂O₃
Percentage Purity: 99.8%
Density: 3.9g/cm³
Product Shape: Cylindrical
CAS Number: 1344-28-1
UOM Code: 106-670-20
SKU: 1000019695
Product Code: AL60-CB-000114

Tolerances

Cylindrical
Outside Diameter ±10%
Inside Diameter ±10%
Height ±10%
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€40.52
each
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Tolerances

Cylindrical
Outside Diameter ±10%
Inside Diameter ±10%
Height ±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
Pultrusions
Element Value
Compressive strength( MPa ) 2200-2600
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