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Supalox D4003 Alumina Powder

Grade: Supalox D4003
Formula: Al₂O₃
Form: Powder
Material: Alumina
CAS Number: 1344-28-1
Commodity: Ceramics
Purity: 99.99%
Particle Size D10: 0.3µm
Particle Size D50: 0.45µm
Particle Size D90: 0.6µm
Phase: Alpha
Color: White
Goodfellow's Supalox D4003 Alumina Powder is a high-purity aluminum oxide (Al₂O₃) product designed for advanced ceramic applications. This fine powder exhibits excellent sinterability, high density, and superior mechanical properties when processed into ceramic components. Its controlled particle size distribution ensures uniform shrinkage during sintering, resulting in precise dimensional control of the final product. Supalox D4003 is widely used in industries such as electronics, aerospace, and advanced manufacturing. It serves as a raw material for producing high-performance ceramic components like substrates for electronic circuits, wear-resistant parts for machinery, and thermal barrier coatings. In cutting-edge applications, this powder is utilized in the development of transparent ceramics for optical applications and in the production of advanced ceramic matrix composites. In research settings, Supalox D4003 plays a crucial role in studying novel ceramic processing techniques and in developing new materials with enhanced properties. Its consistency and reliability make it an invaluable resource for both industrial ceramic production and scientific investigations, particularly in fields focused on improving the performance and functionality of ceramic materials.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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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

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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