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 in 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 high wear resistance.
- 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 workpiece contamination.
- α-Phase Crystal Structure: Provides excellent thermal stability (melting point ~2050 °C) and chemical inertness, suitable for harsh polishing environments.
- Cost-Effective Versatility: Suitable for both small-batch laboratory R&D and large-scale industrial production, delivering reliable value across applications.
Technical Specifications
| Parameter | Details |
|---|---|
| Chemical Composition | Aluminum Oxide (Al₂O₃), α-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) |
| 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/cm³ |
| Tap Density | ≥3.90 g/cm³ |
| Appearance | White, free-flowing powder |
| Packaging | Moisture-proof HDPE bottle with tamper-evident seal |
International Standard Compliance
- Particle Size: ISO 6344-2:2021 (Coated abrasives — Grain size distribution)
- Chemical Purity: ASTM F7-95(2021) (Standard specification for aluminum oxide powder)
- Hardness Testing: ASTM E18-17a (Standard test method for Rockwell hardness)
- Environmental Safety: RoHS Directive 2011/65/EU and REACH Regulation (EC) No 1907/2006
- Grain Classification: FEPA (European Abrasive Manufacturers Federation) standards
Application Guidelines
Particle Size Selection
- Coarser sizes (14–40 microns): Initial material removal and shaping
- Medium sizes (2.5–7 microns): Precision polishing and scratch reduction
- Finer sizes (0.3–1 micron): Ultra-smooth finishing and mirror polishing
Optimal Use
- Use with compatible polishing pads/tools and appropriate lubricants (deionized water recommended)
- Maintain consistent pressure and speed to avoid surface damage
- Gradually reduce particle size between polishing steps to eliminate scratches
Storage Conditions
- Store in a cool, dry environment (relative humidity < 60%)
- Keep the bottle tightly sealed after use to prevent moisture absorption
- Shelf life: 24 months from the manufacturing date under proper storage
Safety & Compliance
This product complies with global safety standards for abrasives. For detailed safety information, refer to the Safety Data Sheet (SDS) supplied with each shipment. Always wear appropriate personal protective equipment (PPE) to avoid dust inhalation.
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
- α-Al₂O₃ Crystal Properties, Advanced Ceramic Materials (2025)
- FEPA Abrasive Grain Classification Standards (2024)
- REACH Regulation (EC) No 1907/2006 & RoHS Directive 2011/65/EU
For inquiries, questions, or custom specifications, please contact us at: inquiry@atomfair.com
