Technical Data Sheet
Safety Data Sheet

Alumina Nut

The Alumina Nut is a product within Goodfellow's range of ceramic bolts. With 38 variations, this nut is made of alumina (aluminum oxide), an extremely hard ceramic material. Alumina has excellent corrosion and wear resistance along with high strength and stiffness at elevated temperatures. These properties make Alumina Nuts suitable for applications in harsh environments like automotive engines and chemical processing equipment where high temperature oxidation resistance is critical. The Goodfellow range of Alumina Nuts provides options to select the optimal size and thread specifications for different assembly and fastening needs.
Formula: Al₂O₃
Size: M3
Quantity: 10 Pcs
Standard: ASME B18.2.4.1M-2002 (R2007)
Pitch: 0.5mm
CAS Number: 1344-28-1
UOM Code: 959-446-74
SKU: 1000023284
Product Code: AL60-NU-000103


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Technical 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
Element Value
Compressive strength( MPa ) 2200-2600
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