Alumina Granules

Alumina Granules are part of Goodfellow’s wide range of ceramic materials. With high hardness, strength and wear resistance, they’re an excellent choice for abrasives and grinding media, and can be used in sandblasting applications or as a polishing agent. With 5 size variations available, we can offer Alumina Granules in the right form for your specific application needs. So, whether you require a coarse abrasive or a fine polishing powder, we have the Alumina Granules to meet your requirements.

Formula: Al₂O₃
Percentage Purity: 99.99%
Weight: 20g
Type: Injection Moulding
CAS Number: 1344-28-1
UOM Code: 380-148-93

SKU: 1000023263

Product Code: AL60-GL-000100

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£227.66

each

Buy 5 for £184.41 each and save 19%
Buy 10 for £168.47 each and save 26%

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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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Alumina Granules

Material Properties for Ceramics