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Technical Data Sheet
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Alumina Cylindrical Crucible - OD 42mm ID 38mm H 33mm

Alumina Cylindrical Crucible is a high-performance ceramic vessel crafted from high-purity aluminum oxide, offering excellent thermal stability, chemical inertness, and mechanical strength at temperatures above 1600 °C. Its cylindrical geometry ensures uniform heat distribution, making it ideal for high-temperature synthesis, metal melting, and controlled atmosphere experiments. Industries such as metallurgy, advanced ceramics, and semiconductor manufacturing rely on these crucibles for applications where contamination control and thermal endurance are critical. Specific uses include alloy development in aerospace-grade metallurgy, calcination of oxide powders in materials research, and molten salt electrolysis for specialized chemical production. Current research explores optimizing slip casting formulations for dimensional precision, integrating gas stirring systems to enhance melt homogeneity, and designing crucibles with slag holes for efficient separation in alloy refining. This form factor remains essential in both laboratory and industrial settings, ensuring reliable, repeatable performance in extreme thermal and chemical environments.
Formula: Al₂O₃
Percentage Purity: 99.8%
Capacity: 27ml
Outside Diameter: 42mm
Inside Diameter: 38mm
Height: 33mm
CAS Number: 1344-28-1
UOM Code: 900-554-50
Legacy Code: AL608932
Distributor Code:
GF90055450
SKU: 1000022753
Product Code: AL60-CB-000132

Tolerances

Cylindrical
Outside Diameter ±10%
Inside Diameter ±10%
Height ±10%

Tolerances

Cylindrical
Outside Diameter ±10%
Inside Diameter ±10%
Height ±10%
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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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