Images are for guidance only and might not represent the final product.
Formula: Al₂O₃
Form: Powder
Material: Alumina
CAS Number: 1344-28-1
Commodity: Ceramics
Goodfellow's Alumina Irregular Powder is a high-purity aluminum oxide (Al₂O₃) product characterized by its non-uniform particle shape and size distribution. This irregularity provides increased surface area and improved sintering properties, making it ideal for applications requiring strong inter-particle bonding. The powder exhibits excellent thermal stability, with a melting point around 2050°C, and remarkable chemical inertness, resisting corrosion from most acids and alkalis. Alumina irregular powder finds extensive use in ceramics manufacturing, refractory production, and as an abrasive in polishing applications. It's a key component in the production of high-performance ceramic parts for aerospace and automotive industries, as well as in the manufacturing of advanced electronic substrates. In cutting-edge research, this powder is being explored for developing novel ceramic composites with enhanced mechanical properties and for creating porous structures for filtration and catalysis applications. Its versatility and reliability make it an invaluable material in both industrial processes and scientific investigations, particularly in fields focused on improving material performance under extreme conditions.
Technical Data Sheet Safety Data Sheet Tolerance Properties
each

We are collecting your products, please wait!...

Shipping restrictions and charges
may apply for some hazardous materials.

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

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

Can't find what you're looking for? For customized options

Other Customers Purchased
  1. Supalox N5003G Alumina Powder Grade: Supalox N5003G
    Formula: Al₂O₃
    Percentage Purity: 99.999%
    Particle Size D10: 0.3µmµm
    Particle Size D50: 0.45µmµm
    Particle Size D90: 0.6µmµm
    Weight: 10000g
    Phase: Gamma
    Colour: White
    CAS Number: 1344-28-1
    UOM Code: 166-247-28

    Starting at $159.13

    each
    Discounts applied for volume purchases
    View Product
  2. Starting at $160.26

    each
    Discounts applied for volume purchases
    View Product
  3. Supalox N5003 Alumina Powder Grade: Supalox N5003
    Formula: Al₂O₃
    Percentage Purity: 99.999%
    Particle Size D10: 0.3µmµm
    Particle Size D50: 0.45µmµm
    Particle Size D90: 0.6µmµm
    Weight: 10000g
    Phase: Alpha
    Colour: White
    CAS Number: 1344-28-1
    UOM Code: 175-103-97

    Starting at $160.10

    each
    Discounts applied for volume purchases
    View Product
  4. Starting at $158.80

    each
    Discounts applied for volume purchases
    View Product
  5. Starting at $155.95

    each
    Discounts applied for volume purchases
    View Product