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Alumina Irregular Powder

Alumina Irregular Powder is an aluminum oxide powder with an irregular particle shape available from Goodfellow in 40 variations. The powder has properties such as high hardness, electrical insulation, and high melting point. Alumina powders find use in applications like abrasives, refractories, ceramics, and electrical insulators. With 40 variations available, Goodfellow's Alumina Irregular Powder provides options for particle size, purity levels, and other specifications to suit different applications.
Percentage Purity: 99.9%
Mean Particle Size: 45µm
Weight: 100g
Technical Name: Alumina
Formula: Al₂O₃
Density: 3.9g/cm³
CAS Number: 1344-28-1
Product Shape: Irregular
UOM Code: 924-360-26
SKU: 1000023336
Product Code: AL60-PD-000110

Tolerances

Powder
Mean Particle Size Nominal
Minimum Particle Size Nominal
Maximum Particle Size Nominal
Maximum Particle Size Nominal
Particle Size D10 Nominal
Particle Size D50 Nominal
Particle Size D90 Nominal
No Minimum order Despatch of products in stock within 48 hours Free technical support *Free delivery worldwide
$178.63
each
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Tolerances

Powder
Mean Particle Size Nominal
Minimum Particle Size Nominal
Maximum Particle Size Nominal
Maximum Particle Size Nominal
Particle Size D10 Nominal
Particle Size D50 Nominal
Particle Size D90 Nominal
Technical Data Sheet
Safety Data Sheet

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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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