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Alumina Balls

Alumina Balls are high-purity spherical ceramic shapes available from Goodfellow in a range of quantities. With high hardness, compressive strength and wear resistance, alumina ceramic is valued for applications where resistance to corrosion, abrasion and thermal shock are priorities. Example applications for alumina balls include ball bearings, valve seats, grinding media and milling media. With 28 quantity variations, Goodfellow's alumina balls offer flexibility for prototyping and small-scale manufacturing across diverse industries.
Formule: Al₂O₃
Diamètre: 9525 mm
Quantité: 10 Pcs
Type: Bille de précision
Sphéricité: 0,625 µm
Numéro CAS: 1344-28-1
Code UOM: 858-926-42
SKU: 1000024273
Product Code: AL60-SP-000169

Tolerances

Balls
Diameter Standard ±5%
Diameter Precision See Item

Tolerances

Balls
Diameter Standard ±5%
Diameter Precision See Item
Technical Data Sheet
Safety Data Sheet
€207.75
each
  • Buy 5 for €168.28 each and save 19%
  • Buy 10 for €157.89 each and save 24%
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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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