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Alumina Tapered Wall Crucible

Formula: Al₂O₃
Form: Crucible
Material: Alumina
CAS Number: 1344-28-1
Commodity: Ceramics
Purity: 99.8%
Goodfellow's Alumina Tapered Wall Crucible is a specialized ceramic vessel designed for precision in high-temperature applications. Crafted from high-purity aluminum oxide (Al₂O₃), it offers exceptional thermal stability up to 1800°C and excellent chemical inertness, ensuring minimal contamination during experiments or processes. The tapered wall design facilitates easy removal of solidified materials and promotes efficient heat transfer, making it ideal for applications involving melting and casting. These crucibles are widely used in metallurgy, materials science, and chemical analysis industries. They excel in applications such as metal alloy preparation, glass melting, and high-temperature chemical synthesis. In research settings, these crucibles play a crucial role in developing new materials, studying phase transitions, and investigating the behavior of substances at extreme temperatures. Their unique design enhances thermal efficiency and sample handling, making them indispensable tools for both industrial processes and academic research, especially in fields exploring material properties and chemical reactions under extreme conditions.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Tapered Wall
Outer Diameter Top ±10%
Outer Diameter Bottom ±10%
External Height ±10%

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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