Product Description

HUAO Calcined Alumina Fine Powder is made from high-quality low sodium raw materials through micro grinding and advanced thermal refining processing. It is widely used in architectural ceramics, electronic components, structural ceramics, refractory materials, wear-resistant items, and polishing media. This multifunctional material has excellent mechanical strength, high hardness, outstanding electrical resistivity, and excellent thermal conductivity.

Technical Parameters

Grain size can be prepared according to customer requirements.

Key Features

• Processed to precise D50 specifications (4–5 μm) with tight mesh residue control, ensuring consistent particle packing and reactivity.
• Strictly control the content of sodium oxide in the formula to improve electrical insulation and high-temperature material stability.
• Achieves α-Al₂O₃ crystal conversion rates exceeding 93% to 94%, ensuring dense structural integrity.
• Controlling SiO₂ and Fe₂O₃ impurities helps maintain chemical purity and reduce unwanted effects during high-temperature processing

Advantages

• Exceptional Dielectric Performance: High resistivity provides strong insulation performance and is an ideal substrate and filling material for advanced electronic devices.
• Superior Thermal Management: High thermal conductivity enables rapid heat dissipation for thermal interface products, electronic substrates, and high-temperature fire-resistant frames.
• Enhanced Mechanical Durability: Excellent hardness and high density (up to ≥ 3.94 g/cm ³) provide excellent wear resistance and structural load-bearing reliability under heavy mechanical stress.
• Reliable Volume Stability: High melting point and low loss on ignition (LOI ≤ 0.1%) can prevent structural deformation or shrinkage during intense thermal cycling.

Applications

Widely utilized as a core fine matrix filler and primary raw material across electronic substrates, structural ceramics, high-temperature refractories, wear-resistant engineered components, and architectural glazes, it also plays an essential role in high-precision polishing compounds and lapping media engineered for superior surface finishing.

Customization & Packaging

Export packaging configurations include reinforced 25 kg double woven bags or 1000 kg / 1250 kg /1350 kg jumbo bags with moisture barrier. All packages are fixed to fumigated or non-fumigated wood and wrapped with stretch wrap to prevent damage during long-distance ocean transportation. We also support neutral packaging and OEM printing of custom brandmarks and shipping marks. Products and packaging are customized according to customer requirements.

FAQ

We also provide other alumina products. If you would like to learn more about Tabular Alumina, please click here.