Description
Atomfair Aluminum Oxide Polishing Powder
Product Overview
Atomfair Aluminum Oxide (Al2O3) Polishing Powder is a precision-engineered abrasive designed for high-performance surface finishing across global industrial and laboratory applications. Featuring controlled particle size distribution, exceptional hardness, and uniform grain morphology, this cost-effective solution delivers consistent, scratch-free results on diverse materials?making it a trusted choice for international manufacturing and research.
Ideal for polishing metals (steel, aluminum, alloys), ceramics, glass, and engineering plastics, it balances efficient material removal with ultra-smooth surface quality. Its versatility meets the demands of industries including optics, electronics, metallurgy, precision engineering, and automotive manufacturing worldwide.
Key Features
- Superior Hardness: Mohs hardness 9.0 (ASTM E18-17a compliant)?, ensuring long-lasting abrasive performance and resistance to wear.
- Uniform Grain Structure: Narrow particle size distribution (ISO 6344-2:2021 certified)? for consistent polishing results and reduced rework.
- High Purity: =99.9% Al2O3 content (ASTM F7-95(2021) standard)?, minimizing contamination of workpieces.
- a-Phase Crystal Structure: Offers exceptional thermal stability (melting point ~2050?C) and chemical inertness4, suitable for harsh polishing environments.
- Cost-Effective Versatility: Adapts to small-batch laboratory use and large-scale industrial production, delivering value across applications.
Technical Specifications
| Parameter | Details |
|---|---|
| Chemical Composition | Aluminum Oxide (Al2O3), a-phase |
| Net Weight | 500g per bottle (industrial-grade sealed packaging) |
| Particle Size Range | 0.3, 0.5, 1, 2.5, 3.5, 7, 14, 20, 28, 40 microns (D50, FEPA compliant)5 |
| Purity | =99.9% Al2O3 (trace impurities < 0.1%) |
| Hardness | Mohs 9.0 (equivalent to Vickers hardness ~2000 HV) |
| Bulk Density | 1.75±1.95 g/cm? |
| Tap Density | =3.90 g/cm? |
| Appearance | White, free-flowing powder |
| Packaging | Moisture-proof HDPE bottle (tamper-evident seal) |
International Standard Compliance
- Particle Size: ISO 6344-2:2021 (Coated abrasives?Grain size distribution)?
- Chemical Purity: ASTM F7-95(2021) (Aluminum oxide powder specification)?
- Hardness Testing: ASTM E18-17a (Standard test method for Rockwell hardness)?
- Environmental Safety: RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/20066
- Grain Classification: FEPA (European Abrasive Manufacturers Federation) standards5
Application Guidelines
- Particle Size Selection:
- Coarser sizes (14-40 microns): Initial material removal and shape correction
- Medium sizes (2.5-7 microns): Precision polishing and scratch reduction
- Finer sizes (0.3-1 micron): Ultra-smooth finishing and mirror-effect surfaces
- Optimal Use:
- Use with compatible polishing pads/tools and appropriate lubrication (deionized water recommended)
- Maintain consistent pressure and speed to avoid surface damage
- Gradually reduce particle size between polishing stages to eliminate prior scratches
- Storage Conditions:
- Store in a cool, dry environment (relative humidity < 60%)
- Seal bottle tightly after use to prevent moisture absorption
- Shelf life: 24 months from manufacturing date when stored properly
Safety & Compliance
This product complies with global safety standards for abrasives. For detailed safety information, refer to the Safety Data Sheet (SDS) provided with each shipment. Handle with appropriate personal protective equipment (PPE) to avoid inhalation of dust.
References:
? ASTM E18-17a: Standard Test Methods for Rockwell Hardness of Metallic Materials
? ISO 6344-2:2021: Coated abrasives?Determination and designation of grain size distribution
? ASTM F7-95(2021): Standard Specification for Aluminum Oxide Powder
4 a-Al2O3 Crystal Properties, Advanced Ceramic Materials (2025)
5 FEPA Abrasive Grain Classification Standards (2024)
6 REACH Regulation (EC) No. 1907/2006 & RoHS Directive 2011/65/EU
If you?re interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.
