Aluminum Oxide Vs Zirconia

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Aluminum oxide is a popular and well-known abrasive material. It's low in iron which helps prevent rusting when used on metals and it also suppresses heat while cutting. You'll find it in a wide variety of products like sandpaper, grinding wheels and abrasive blasting materials. It's the workhorse of abrasives and you can use it for anything from rough grit to fine sanding on woods or smoothing a surface.

It's produced from a sedimentary rock called bauxite that is melted at very high temperatures to create the material we know as aluminum oxide. When used in abrasives it's usually sorted by grit size and then broken down into small particles that are ready for production as sandpaper, sanding discs or grinding wheels. Aluminum Oxide is an economical and versatile choice.

Zirconia, or zirconium alumina, is another high-performance grain that's becoming increasingly popular in sanding applications. It's heat-resistant and lasts a long time compared to other abrasives. Zirconia alumina is available in coarse to fine grits on sanding belts and disks for power sanding units. Both seasoned and novice workers find this grain easy to use and durable for challenging or time-consuming projects.

It works wonders on difficult metal and heat-resistant materials such as tungsten, carbon steel, stainless steel and titanium. It's especially useful for getting rid of rough patches in a material or removing burrs from very hard metals. Zirconia alumina is commonly employed in foundry or casting processes as it's firmer than aluminum oxide and can withstand incredibly heavy loads.

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