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Alumina Round, shallow, straight sides Crucible

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Composition: Al₂O₃ Form: Crucible Material: Aluminum Oxide CAS Number: 1344-28-1 Commodity: Ceramics Purity: 99.8% (2N8)
Alumina Round, shallow, straight sides Crucible is manufactured from high-purity α-alumina, providing exceptional thermal shock resistance, chemical inertness, and mechanical strength at extreme temperatures. The shallow, straight-sided profile is optimized for uniform heating and easy material access, making it suitable for high-precision melting, calcination, and sintering operations. This crucible finds widespread application in metallurgy, semiconductor processing, advanced ceramics, and high-purity chemical synthesis. Specific uses include alloy refining, preparation of ceramic powders, and controlled decomposition reactions where contamination control is critical. Its resistance to corrosive slags, molten metals, and aggressive chemicals ensures prolonged usability in high-demand research and industrial settings. By enabling consistent thermal profiles and maintaining purity under harsh conditions, Alumina Round, shallow, straight sides Crucible plays a pivotal role in advancing high-temperature materials research and manufacturing innovation.
Starting at $70.00 each
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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% (2N8)

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