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Formula: Al₂O₃
Form: Foil/Film/Sheet
Material: Alumina
CAS Number: 1344-28-1
Commodity: Ceramics
Alumina Sheet, also known as aluminum oxide (Al₂O₃) sheet, is a versatile material renowned for its exceptional properties and wide-ranging applications. Characterized by high thermal conductivity, excellent mechanical strength, and superior electrical insulation, alumina sheets are indispensable in various high-tech industries. These sheets are particularly valued in aerospace for their high-temperature resistance and in advanced manufacturing for their durability and wear resistance. Additionally, alumina sheets are crucial in industrial furnaces and automotive applications due to their ability to withstand extreme conditions. Goodfellow offers premium-quality alumina sheets that meet stringent industry standards, ensuring reliability and performance. With Goodfellow’s alumina sheets, industries can achieve enhanced efficiency and longevity in their applications.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Foil/Film/Sheet
Thickness ±20%

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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