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Alumina Round, shallow, straight sides Crucible

Alumina Round Shallow Straight Sides Crucibles are available in 16 variations in Goodfellow's range of crucibles. Alumina crucibles are made of aluminum oxide, which has high hardness, strength, and corrosion resistance at high temperatures. These properties make alumina suitable for use as crucibles in applications like melting metals at high temperatures or calcining powder samples. The round shallow straight-sided shape allows for the easy stirring of samples while heating. With a wide range of sizes to choose from, Goodfellow's Alumina crucibles can accommodate a wide choice of sample volumes for laboratory and industrial use.
Capacity: 35ml
Outside Diameter: 50mm
Height: 25mm
Technical Name: Alumina
Formula: Al₂O₃
Percentage Purity: 99.8%
Density: 3.9g/cm³
Product Shape: Round, shallow, straight sides
CAS Number: 1344-28-1
UOM Code: 637-127-23
SKU: 1000022863
Product Code: AL60-CB-000220

Tolerances

Round, shallow, straight sides
Outside Diameter ±10%
Inside Diameter ±10%
External Height Overall ±10%
No Minimum order Despatch of products in stock within 48 hours Free technical support *Free delivery worldwide
€64.30
each
  • Buy 5 for €52.08 each and save 19%
  • Buy 10 for €47.58 each and save 26%

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Tolerances

Round, shallow, straight sides
Outside Diameter ±10%
Inside Diameter ±10%
External Height Overall ±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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