Black Aluminum Oxide 70 mesh

Aggressive Cutting for Tough Surface Preparation

Black Aluminum Oxide 70 mesh is a fused, high-purity alumina abrasive known for its extreme hardness and angular particle shape. The 70 mesh grade offers an optimal balance of aggressive stock removal and surface profile control, making it the go-to choice for removing heavy rust, mill scale, and thick coatings from steel and hard metals.

Unlike softer, rounder media that can bounce off tough contaminants, the sharp, blocky grains of black aluminum oxide fracture on impact, continuously exposing fresh cutting edges. This self-sharpening characteristic ensures a consistent blast pattern and high productivity throughout the media's usable life. It is widely used in air-blast and wheel-blast equipment across fabrication, foundry, and maintenance operations.

Key Performance Characteristics

• High Hardness: Mohs 9 hardness provides deep, rapid cutting on hard substrates.
• Angular Grain Shape: Maximizes etch profile for superior coating adhesion.
• Low Iron Content: Suitable for applications where ferrous contamination must be controlled.
• Recyclable: Tough grain structure allows multiple blast cycles, reducing media consumption cost.
• Dust Control: Generates less dust compared to mineral slags, improving operator visibility.

Typical Industrial Applications

This 70 mesh grade is specified where a defined anchor profile and rapid cleaning rate are required. Common uses include blasting structural steel before intumescent or epoxy coating, preparing turbine blades and engine components, etching hard metals for thermal spray bonding, and removing tough powder coatings from automotive and aerospace parts. It is also used in non-slip surface texturing and decorative matte finishing on granite and stone.

Packaging and Supply Options

SPA2Z understands that abrasive consumption varies by project. We supply Black Aluminum Oxide 70 mesh in 25 kg bags, 50 kg bags, 1-ton jumbo bags, bulk totes, and drum packs. This flexibility helps small workshops and large-scale blasting yards manage inventory, handling, and cost effectively. Contact us with your estimated monthly or project-based volume for a tailored quotation.

About SPA2Z — Your Source for Black Aluminum Oxide 70 Mesh

SPA2Z is a focused supplier of industrial blasting and surface preparation consumables, including the Black Aluminum Oxide 70 mesh abrasive. We support manufacturing companies, surface preparation contractors, and fabrication workshops in sourcing the right media for their specific blasting parameters. Our team helps you confirm grade compatibility, select the most economical pack size, and manage logistics for both spot purchases and scheduled bulk deliveries.

Whether you are setting up a new blasting line, qualifying a surface profile for a coating specification, or simply need a reliable ongoing supply of 70 mesh black aluminum oxide, SPA2Z is ready to assist with practical, no-nonsense support. Request a quote today to discuss your grade, quantity, and delivery requirements.