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Alumina Point Bottom Crucible

Available Configurations

Properties common to all products in this list

Composition: Al₂O₃ Form: Crucible Material: Aluminum Oxide CAS Number: 1344-28-1 Commodity: Ceramics Purity: 99.8%
Alumina Point Bottom Crucible is engineered from high-purity alumina ceramic, offering exceptional thermal stability, chemical inertness, and mechanical strength for high-temperature processing. The pointed base design enables efficient collection of molten or precipitated material, ensuring optimal sample recovery and minimizing residual waste. This crucible excels in metallurgical analysis, advanced ceramics processing, and catalyst research, where precise thermal control and contamination-free environments are paramount. Common uses include calibrating thermocouples through eutectic point determination, conducting high-purity alloy synthesis, and facilitating controlled crystallization in material science studies. Its resilience against aggressive molten metals, slag, and corrosive chemicals allows it to maintain structural integrity over repeated heating cycles. In research and industrial innovation, Alumina Point Bottom Crucible provides a reliable vessel for precise, contamination-free processing, enabling breakthroughs in high-temperature chemistry and materials engineering.
Starting at $74.00 each
No Minimum order Approx. 2 weeks leadtime Free technical support *Free delivery worldwide

Material Properties

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
each

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Available Configurations

Properties common to all products in this list

Composition: Al₂O₃ Form: Crucible Material: Aluminum Oxide CAS Number: 1344-28-1 Commodity: Ceramics Purity: 99.8%

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Tolerances

Point Bottom
Outer Diameter ±10%
External Height of Cylinder ±10%
External Height Overall ±10%
Internal Height Overall ±10%
Internal Diameter at Top ±10%
Outer Diameter Bottom ±10%