Discover the Power of 120 Grit Aluminum Oxide for Blasting

Discover the Power of 120 Grit Aluminum Oxide for Blasting
Discover the Power of 120 Grit Aluminum Oxide for Blasting

What is Aluminum Oxide Blast Media?

What is Aluminum Oxide Blast Media?

Aluminum Oxide Blast Media is a synthetic, durable abrasive used in sandblasting operations. Characterized by its angular shape, high hardness, and high density, it effectively removes surface materials such as paint, rust, or other coatings. Aluminum oxide’s toughness and long-lasting sharp edges give it a high cutting efficiency, making it a preferred abrasive for surface preparation in a variety of industries. Its inert properties mean it does not react chemically with the materials it contacts, ensuring the underlying surface is not compromised during the blasting process. This media is available in various grit sizes, with 120-grit aluminum oxide offering a balance between aggressive material removal and a relatively smooth finish.

Understanding the Properties of Aluminum Oxide

The utility of aluminum oxide blast media in surface preparation stems from its unique physical and chemical properties. The key attributes are:

  • Hardness: Aluminum oxide possesses an impressive Mohs hardness rating of 9, which is just below that of diamond, enabling it to abrade rigid materials effectively.
  • Angular Grit Shape: The particle’s shape contributes to the media’s ability to aggressively attack surface irregularities and profiles, achieving efficient cleaning and etching.
  • High Density: Its heavier weight relative to other abrasives allows for a more significant impact on the surface being blasted, ensuring effective results.
  • Inertness: The chemical stability of aluminum oxide means it won’t react with the workpiece, making it suitable for a broad array of blasting projects.
  • Recyclability: This abrasive can be reused multiple times in blasting cabinets or rooms before becoming too fragmented, providing an economical advantage.
  • Variability in Grit Sizes: Aluminum oxide is available in various grit sizes, with each offering a different balance of aggression versus finish quality, demonstrating versatility across applications.

Benefits of Using Aluminum Oxide Blast Media

The utilization of aluminum oxide as a blast media confers several advantages that align with industrial objectives for efficient and quality surface preparation. These benefits encompass:

  • Precision Surface Profiling: Due to its complex and angular nature, aluminum oxide blast media facilitates precise control over surface profiles, allowing operators to achieve specific roughness levels required for optimal coating adhesion.
  • Longevity and Cost-Effectiveness: The durability and recyclability of aluminum oxide contribute to its long service life, reducing the frequency of media replacement and offering cost savings over time.
  • Low Dust Generation: While blasting, aluminum oxide produces comparatively less dust than softer abrasives, contributing to enhanced visibility and reduced contamination, which is crucial for high-quality surface finishes.
  • Versatility in Application: Its inert nature allows for its use on a variety of substrates, including metals, glass, and ceramics, without the risk of chemical alteration or damage to the workpiece.
  • Environmental Considerations: As an environmentally responsible option, aluminum oxide does not contain free silica, eliminating the risk of silicosis and making it a safer medium for the operator and the environment.
  • Efficiency in Cleaning and Material Removal: The high density and sharp edges of aluminum oxide particles enable quick and effective removal of surface contaminants and preparation of substrates for further processing or coating applications.

By incorporating aluminum oxide blast media, industries can substantially enhance the effectiveness and outcomes of surface preparation tasks, emphasizing both the performance and the costs associated with their operations.

How to Choose the Right Abrasive for Your Needs

How to Choose the Right Abrasive for Your Needs

Comparing Grit Sizes: Why 120 Grit Aluminum Oxide Stands Out

When selecting aluminum oxide as an abrasive for surface treatment, the choice of grit size is critical to achieving desired outcomes. In this spectrum, 120 grit stands out as an exceptionally versatile option for several reasons:

  • Optimal Balance Between Roughness and Smoothness: 120-grit aluminum oxide offers an ideal median between coarse and fine abrasives, making it suitable for a variety of substrates where neither a highly roughened surface nor a polished finish is desired.
  • Uniformity in Finish Quality: This medium-range grit size tends to provide a consistent pattern in the resultant surface profile, which is particularly advantageous when preparing components for coatings or treatments that require a predictable surface texture.
  • Versatility Across Industries: Due to its balanced textural properties, 120 grit abrasive finds applications in multiple industries, including automotive, aerospace, and metal fabrication, where it adapts well to diverse technical specifications.
  • Enhanced Efficiency: Its size and hardness contribute to increased removal rates of undesirable material compared to finer grits while still retaining lower material consumption rates in comparison to coarser grits. This efficiency is vital in minimizing both processing times and abrasive costs.
  • Reduction in Substrate Damage: With its moderate abrasiveness, 120-grit aluminum oxide reduces the risk of over-etching or inducing unnecessary stress on the workpiece, a concern significant in delicate applications.

Each abrasive grit size serves a specific purpose in the spectrum of surface preparation, and understanding the distinctive properties of 120-grit aluminum oxide equips operators with the knowledge to choose the most appropriate media for their particular surface finishing requirements.

Factors to Consider When Selecting Blast Media

When selecting the appropriate blast media for a given application, several critical factors must be taken into account to ensure both effective and efficient surface treatment. These factors include:

  • Material Composition: Different media materials, such as aluminum oxide, glass beads, or steel shot, have varying effects on the substrate due to differences in hardness and density, consequently influencing the finish achieved.
  • Grit Size and Shape: The size and angularity of the abrasive particles determine the aggressiveness of the media. Finer grits yield smoother finishes, while more significant, angular grits are more aggressive and carve deeper profiles.
  • Substrate Hardness: It is essential to match the hardness of the blast media to the substrate to prevent substrate deformation. Softer media are preferred for more delicate materials to minimize damage.
  • Desired Surface Finish: Whether the objective is to achieve a matte, satin, or polished finish directly impacts the choice of media. This decision influences subsequent coating or treatment adhesion.
  • Blasting Equipment Capabilities: The type of blasting equipment available may restrict the choice of media based on factors like machine operating pressures, media recovery systems, and nozzle sizes.
  • Operating Costs: The cost per use, including media lifespan, equipment wear, and disposal fees, should be considered for the overall process economy.
  • Health and Safety Concerns: Some media generate harmful dust or pose risks due to their composition, requiring careful selection to ensure operator safety and environmental compliance.

Understanding these factors facilitates the precise tailoring of the blasting process to meet specific technical requirements, resulting in optimal surface preparation outcomes.

Exploring Different Applications of 120 Grit Aluminum Oxide

Exploring Different Applications of 120 Grit Aluminum Oxide

Surface Preparation with Aluminum Oxide

Aluminum oxide, with a particulate size of 120 grit, is commonly deployed in surface preparation tasks where a balance between removal of existing coatings and substrate preservation is required. Its angular morphology contributes to effective surface etching, providing an ideal profile for coating adhesion. Due to its medium-range grit size, 120 aluminum oxide is versatile enough to manage a plethora of substrates, from metals to composites, without causing detriment to the integrity of the material. Appropriate use of this media demands a meticulous assessment of operating parameters, such as pressure settings and nozzle distance, to ensure uniform coverage and prevent over-blasting, which can undermine surface properties. In this context, surface preparation with aluminum oxide demands a strategic approach, integrating technical knowledge with practical proficiency to achieve the desired surface finish while maintaining structural integrity.

Benefits of Using Aluminum Oxide in Blasting Cabinets

  • High Abrasive Efficiency: Aluminum oxide’s high hardness level leads to superior cutting speeds and more efficient stock removal during blasting operations.
  • Reusability: The longevity of aluminum oxide grit, due to its durability, supports multiple reuse cycles, making it a cost-effective choice for industrial applications.
  • Versatility: Suitable for a wide range of materials, aluminum oxide can be used on ferrous metals, alloys, wood, and composites, giving it a broad application scope.
  • Consistent Finish: The grit size of 120 aluminum oxide ensures a consistent and uniform surface finish, critical for subsequent processing like coating or painting.
  • Health Safety: Comparatively less harmful than silica sand, aluminum oxide generates lower levels of dust and reduces the risks associated with silicosis in blasting cabinet operations.
  • Environmental Impact: Due to its lower dust production, aluminum oxide minimizes contamination and pollution, aligning with environmental compliance and workplace safety standards.

Tips for Effective Sandblasting with Aluminum Oxide

Tips for Effective Sandblasting with Aluminum Oxide

Maximizing Efficiency with the Right Equipment: Ensuring Safety and Quality in Sandblasting Practices

  • Proper Nozzle Selection: Utilize nozzles that are designed for aluminum oxide media to enhance the precision and efficiency of the blasting process. Choosing the appropriate size and material, such as tungsten carbide or boron carbide, can significantly reduce wear and maintain consistent performance.
  • Optimized Blasting Pressure: Calibration of blasting pressure is crucial. A high pressure may cause excessive media breakdown and substrate damage, while a low pressure may lead to insufficient surface cleaning. A balance must be achieved for optimal results.
  • Blast Cabinet Maintenance: Regular inspection and maintenance of the blast cabinet, including seals, gloves, and viewing windows, is essential to ensure operator safety and prevent leaks that could lead to environmental contamination.
  • Dust Collection Systems: Employing a robust dust collection system not only enhances visibility within the cabinet but also reduces airborne particulates, contributing to a safer and cleaner working environment.
  • Protective Gear for Operators: Implementing a strict protocol for the use of protective clothing and equipment, such as respirators, gloves, and protective suits, is essential to safeguard operators against exposure to harmful dust and debris.
  • Media Recycling Practices: Incorporate media recycling methods that allow for the separation of dust and broken-down media from reusable grit, ensuring consistent blasting results and reducing material costs.
  • Quality Control Procedures: Establish systematic quality control measures post-blasting, such as visual inspections and surface profile measurements, to ensure that the surface finish meets the specified requirements.
  • Training and Certification: Ensure personnel operating the equipment have received thorough training in sandblasting techniques and safety procedures and are certified where required to uphold the highest standards of operation.

Frequently Asked Questions

Frequently Asked Questions

Q: What is the description of 120 Grit Aluminum Oxide for Blasting?

A: 120 Grit Aluminum Oxide is a premium abrasive media used for blasting applications. It is a high-quality blasting abrasive that is ideal for sandblasting and polishing metal surfaces.

Q: Where can I find additional information about 120 Grit Aluminum Oxide?

A: You can find additional information about 120 Grit Aluminum Oxide on our website or by contacting us directly for any inquiries.

Q: What is included in a blasting kit using 120 Grit Aluminum Oxide?

A: A blasting kit using 120-grit aluminum Oxide typically includes blasting guns, abrasive media, and all necessary equipment for sandblasting applications.

Q: How much does a package of 120 Grit Aluminum Oxide weigh?

A: A package of 120 Grit Aluminum Oxide can weigh different amounts, with standard options being 50 lbs, 8 lbs, or other specified quantities.

Q: Why is 120 Grit Aluminum Oxide preferred for metal blasting?

A: 120-grit aluminum oxide is preferred for metal blasting due to its hardness, durability, and ability to remove coatings and debris from metal surfaces effectively.

Q: What is the shipping process for 120 Grit Aluminum Oxide?

A: Depending on your location, shipping options for 120 Grit Aluminum Oxide may vary. Please check with us for details on shipping and freight arrangements.

Q: What are some other products that I may like if I use 120 Grit Aluminum Oxide?

A: If you use 120-grit Aluminum Oxide, you may also like brown aluminum oxide, white aluminum oxide sandblasting media, or other polishing and deburring products.


  1. 120 Grit Aluminum Oxide Blast Media – Amazon – A product listing providing details about the abrasive force and longevity of this specific grade of aluminum oxide.
  2. 120 Aluminum Oxide – Amazon – Another product listing emphasizing the hardness of aluminum oxide and its effectiveness on various surfaces, including glass.
  3. Aluminum Oxide Blast Media 120 grit – Giant Finishing – Manufacturer’s website detailing the toughness and medium density of their 120 grit aluminum oxide blast media.
  4. Brown Aluminum Oxide, 120 to 120 Mesh, Blast Media – Grainger – An industrial supplier’s listing highlighting the aggressive cleaning, stripping, and surface preparation capabilities of brown aluminum oxide.
  5. 120 Grit Aluminum Oxide Blast Media – Aeropost – Product description discussing the long-lasting nature of aluminum oxide blast media compared to glass blasting media.
  6. Aluminum Oxide Sandblasting Media 100 Micron (120 Grit) – Vaniman – Manufacturer’s product details the multi-purpose nature of aluminum oxide, including cutting, drilling, deburring, surface preparation, devesting, and texturing.
  7. Where do you guys get your aluminum oxide for abrasive… – Garage Journal – A forum discussion about sourcing aluminum oxide for abrasive blasting, providing insights from user experiences.
  8. ALC 25 lbs. Aluminum Oxide Blasting Abrasive – Home Depot – A product listing that provides information about different grit levels of aluminum oxide.
  9. Aluminum Oxide Sandblasting Media 100 Micron (120 Grit) – Vaniman – Another product listing from Vaniman highlighting the versatility of aluminum oxide as an abrasive media.
  10. Aluminum Oxide Sandblasting Abrasive Media Bulk Supplier – Blast One – A supplier’s website discusses the wide range of sizes available for aluminum oxide, emphasizing its versatility as a sandblasting medium.
Product From RUISHI
Recently Posted
Contact RUISHI
Contact Form Demo
Scroll to Top
Get in touch with us
Leave a message
Contact Form Demo