0.1-0.3µm Calcined Alumina Powder | 9 Mohs High Hardness for Precision Polishing

Product Description:

Our Calcined Alumina Powder is engineered for precision polishing applications where surface quality is critical. With a controlled particle size of 0.1-0.3 micrometers and exceptional 9 Mohs hardness, this premium alumina powder delivers outstanding polishing performance for the most demanding industrial applications.

Key Product Advantages:

• Exceptional Hardness - 9 Mohs hardness ensures effective material removal and superior surface finishing
• Narrow Particle Distribution - Controlled 0.1-0.3µm size range guarantees consistent, scratch-free results
• Excellent Suspension Stability - Maintains uniform dispersion in polishing compounds and slurries
• Optimized Crystal Morphology - Round-shaped crystal structure prevents surface damage and enables fine polishing
• High Purity Composition - Minimum 99.2% Al₂O₃ content ensures reliable, contaminant-free performance

Technical Specifications:

Primary Applications:

Semiconductor Industry:

• Monocrystalline silicon wafers and substrates

• Semiconductor component finishing

Optical Manufacturing:

• Optical glass lenses and components

• Cathode ray tube (CRT) glass shells

• Computer hard disk substrates

• Precision optical elements

Advanced Materials Processing:

• High-end stone polishing (granite, marble)

• Precious metal finishing

• Automotive and aerospace components

• Medical device surfaces

Product Forms & Uses:

This calcined alumina serves as an essential skeletal material for formulating:

• High-performance polishing pastes

• Advanced polishing solutions

• Chemical-mechanical polishing (CMP) slurries

• Industrial abrasive compounds

Why Choose Our Alumina Powder?

The unique combination of high hardness, controlled particle morphology, and narrow size distribution makes our calcined alumina powder ideal for applications requiring mirror-like finishes without subsurface damage. Its excellent suspension characteristics ensure consistent performance throughout the polishing process, reducing waste and improving efficiency.

For precision polishing results that meet the highest industry standards, our 0.1-0.3µm calcined alumina powder delivers unmatched performance and reliability.

Founded in 2017, Kegu is a leading advanced materials developer based in China’s Xixian New District, Qinhan New City—strategically positioned near major transport links including the Xianyang East Expressway. With a registered capital of 35.5 million RMB (approx. 5 million USD), we operate from a modern 5-acre production facility where we combine materials science innovation with precision manufacturing.

We specialize in engineering high-performance ceramic components for mission-critical industries such as New Energy, Chemical Processing, Pharmaceuticals, and Aerospace. Our products are known for exceptional thermal stability, excellent chemical resistance, and outstanding mechanical properties.

Leveraging a strong R&D foundation, we deliver customized ceramic solutions that meet stringent international quality standards while enhancing operational performance and reducing lifecycle costs for OEMs and innovators worldwide. At Kegu, we’re solving tomorrow’s material challenges—today.