White Aluminum Oxide Grit
White Aluminum Oxide Grit is a >99% ultra-pure grade of abrasive media. It is increasingly being used in critical, high-performance processes that are sensitive to contamination and cleanliness.
WHITE ALUMINUM OXIDE BLAST MEDIA FOR PRECISION SURFACE PREPARATION AND FINISHING
White Aluminum Oxide Blast Media is a high-purity, durable abrasive designed for precision surface preparation, cleaning, etching, and finishing applications. Its sharp, angular grain provides fast cutting action while its high purity makes it suitable for processes where cleanliness and contamination control are important.
Kramer Industries offers White Aluminum Oxide Grit in a wide range of mesh sizes for different blasting and surface finishing requirements. The appropriate grade depends on the material being treated, the desired surface profile, and the level of material removal required.
What Is White Aluminum Oxide Blast Media Used For?
This abrasive is used for surface preparation, cleaning, etching, deburring, and finishing applications where a hard, consistent cutting action is required. White Aluminum Oxide Blast Media is particularly useful for precision applications involving hard metals, ceramics, glass, and other compatible materials.
Its high purity and angular grain allow it to produce an effective cutting action without introducing significant unwanted contaminants into the finishing process.
Benefits
- High Purity with Minimal Contaminants
- Highly Durable and Reusable
- Long Lasting
- Harder Than Most Blasting Media
- Fast Cutting Action
- Very Heavy to Light Etching on Multiple Types of Surface
- Available in a Wide Variety of Mesh / Grit Sizes
- Lighter Than Metallic Media with a Denser Blast Stream
- Silica Free
Blasting Applications
- Etching Medical and Dental Parts
- Prepping Surfaces for High-Performance Coatings
- Engine Heads, Valves, and Pistons
- Cleaning Turbine Blades
- Surface Preparation for Metalizing and Welding
- Preparation for Bonding
General Applications
- Microdermabrasion & Exfoliating Creams
- Wood Parts Tumbling / Sanding
- Non-Skid Flooring
- Abrasion Resistance
- Slurry Polishing
- Paint Filler
- Grinding
- Cue Tip Chalk
- Edge Rounding in Tumbling
- Wear Resistance
- Wet and Dry Barrel Tumbling
Precision Surface Preparation
The combination of hardness, angular grain shape, and high purity makes this abrasive suitable for applications that require controlled material removal and a consistent surface finish. It can be used before coating, plating, welding, bonding, or other finishing processes.
For precision components, the selected mesh size should match the material, required profile, and desired final appearance. Finer grades can provide more controlled surface treatment, while coarser grades are better suited to heavier cutting and material removal.
Selecting the Right Mesh Size
Mesh size has a direct effect on cutting action and the resulting surface texture. White Aluminum Oxide Grit is available in grades ranging from coarse particles to very fine powders, allowing the abrasive to be matched to different processing requirements.
For example, white aluminum oxide 80 grit can be considered for applications requiring a relatively coarse abrasive and more aggressive surface preparation. Finer grades can be selected when a smoother or more controlled finish is required.
When evaluating white aluminum oxide 80 grit, consider the substrate hardness, coating thickness, blasting pressure, nozzle configuration, and desired surface profile rather than choosing mesh size alone.
Fine and Precision Abrasive Applications
For applications that require a finer abrasive, white aluminum oxide abrasive 220 grit can provide more controlled cutting and surface treatment than coarser grades. It may be appropriate for precision preparation, light etching, and applications where a finer surface texture is required.
The selection of white aluminum oxide abrasive 220 grit should take into account the substrate, operating conditions, desired finish, and amount of material that needs to be removed.
Industrial Uses and Contamination Control
White Aluminum Oxide Blast Media is used in industries where surface cleanliness and consistent abrasive performance are important. Its high-purity composition makes it suitable for applications involving medical and dental components, aerospace-related parts, electronics, ceramics, glass, and other precision components.
Kramer Industries can support abrasive selection based on the application, material, mesh requirement, and desired surface result.
Reusability and Media Life
One of the advantages of this abrasive is its durability and ability to be reused in suitable blasting systems. Repeated use can help extend media life when the blasting process includes appropriate recovery and separation of broken-down particles.
Actual media life depends on factors such as blasting pressure, substrate hardness, equipment configuration, contamination, and the required surface finish. As the abrasive breaks down and becomes less effective, the blasting load should be replaced according to the requirements of the application.
White Aluminum Oxide Compared With Other Abrasives
White Aluminum Oxide Blast Media provides a combination of high purity, hardness, and angular cutting action. Compared with softer or rounder abrasives, it can provide more aggressive cutting and a more defined etched surface.
The appropriate abrasive depends on the substrate, desired finish, production requirements, contamination considerations, and recovery system. For applications where abrasive purity and controlled surface preparation are important, white aluminum oxide can be a suitable option.
Specifications
White Aluminum Oxide Grit Specifications |
||
|---|---|---|
Mesh |
Average Particle Sizethe smaller the mesh number, the coarser the grit |
Spec Sheet |
|
8 Mesh
|
45% 8 mesh (2.3 mm) or larger |  |
| 10 Mesh | 45% 10 mesh (2.0 mm) or larger | |
| 12 Mesh | 45% 12 mesh (1.7 mm) or larger | |
| 14 Mesh | 45% 14 mesh (1.4 mm) or larger | |
| 16 Mesh | 45% 16 mesh (1.2 mm) or larger | |
| 20 Mesh | 70% 20 mesh (0.85 mm) or larger | |
| 22 Mesh | 45% 20 mesh (0.85 mm) or larger | |
| 24 Mesh | 45% 25 mesh (0.7 mm) or larger | |
| 30 Mesh | 45% 30 mesh (0.56 mm) or larger | |
| 36 Mesh | 45% 35 mesh (0.48 mm) or larger | |
| 40 Mesh | 45% 40 mesh (0.42 mm) or larger | |
| 46 Mesh | 40% 45 mesh (0.35 mm) or larger | |
| 54 Mesh | 40% 50 mesh (0.33 mm) or larger | |
| 60 Mesh | 40% 60 mesh (0.25 mm) or larger | |
| 70 Mesh | 45% 70 mesh (0.21 mm) or larger | |
| 80 Mesh | 40% 80 mesh (0.17 mm) or larger | |
| 90 Mesh | 40% 100 mesh (0.15 mm) or larger | |
| 100 Mesh | 40% 120 mesh (0.12 mm) or larger | |
| 120 Mesh | 40% 140 mesh (0.10 mm) or larger | |
| 150 Mesh | 40% 200 mesh (0.08 mm) or larger | |
| 180 Mesh | 40% 230 mesh (0.06 mm) or larger | |
| 220 Mesh | 40% 270 mesh (0.046 mm) or larger | |
| 240 Mesh | 38% 325 mesh (0.037 mm) or larger | |
| 280 Mesh | Median: 33.0 – 36.0 micron | |
| 320 Mesh | 60% 325 mesh (0.037 mm) or finer | |
| 360 Mesh | Median: 20.1-23.1 micron | |
| 400 Mesh | Median: 15.5-17.5 micron | |
| 500 Mesh | Median: 11.3-13.3 micron | |
| 600 Mesh | Median: 8.0-10.0 micron | |
| 800 Mesh | Median: 5.3-7.3 micron | |
| 1000 Mesh | Median: 3.7-5.3 micron | |
| 1200 Mesh | Median: 2.6-3.6 micron | |
Note: Images are for comparison purposes only.
Frequently Asked Questions (FAQs)
Q1. What is the best media for blasting aluminum?
The best blasting media depends on the aluminum surface, desired finish, coating or contamination being removed, and blasting pressure. Softer abrasives may be preferred for delicate aluminum surfaces, while harder abrasives can be used when more aggressive cleaning or preparation is required.
Q2. Where can I buy aluminum oxide blast media?
Aluminum oxide blast media is available from industrial abrasive suppliers in a range of mesh sizes and package quantities. Kramer Industries offers white aluminum oxide for precision blasting, surface preparation, etching, and other finishing applications.
Q3. What is aluminum oxide blasting media used for?
It is used for surface preparation, cleaning, etching, deburring, coating preparation, and other abrasive finishing processes. It can be selected for applications involving metals, ceramics, glass, medical components, turbine parts, and other compatible materials.
Q4. What is the difference between white and brown aluminum oxide?
White aluminum oxide is a high-purity abrasive commonly selected for applications where cleanliness and controlled surface treatment are important. Brown aluminum oxide is generally used for broader-purpose abrasive applications where economy and durability are priorities.
Q5. Can white aluminum oxide grit be reused?
Yes. It can be recovered and reused in suitable blasting systems. The number of usable cycles depends on blasting pressure, substrate, equipment, contamination, and how much the abrasive breaks down during use.
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