Silicon Carbide Sanding Discs

Silicon carbide offers consistent and reliable results when performing rough material removal or final polishing on woodworking projects, providing precise results with its stable abrasive properties that minimize grit deterioration for consistent precision results.

Silicon carbide discs offer cost-effective and versatile abrasives that can help with tasks ranging from woodworking and metalworking to automotive repairs and beyond. Discover how this rugged yet durable abrasive can assist you in accomplishing your next endeavor.


Silicon carbide, also referred to as carborundum or SiC, is a naturally occurring mineral with a hardness rating of 9. This durable material can be found in industrial applications like sanding discs.

Silicon carbide grains differ from aluminum oxide in that they’re much tougher and tend to shed less, helping resist damage during sanding while staying sharp for extended periods. Their hardness also makes silicon carbide perfect for use on tough materials like ceramic and glass.

Silicon carbide is known for being both strong and durable, as well as highly abrasive – perfect for sanding metal surfaces with its hard, abrasive surface. Silicon carbide can also be used to strip old paint away or smooth rough edges on metal pieces; its versatility allows it to serve numerous uses including stripping away old paint layers or smoothing out rough edges; automotive industry applications often utilize silicon carbide in this capacity when priming surfaces for painting.

Silicon carbide’s hard and abrasive qualities make it an attractive alternative to diamond for high-pressure grinding applications, but its hardness can make it brittle; to prevent this from occurring, proper pressure must be used and best practices implemented; including wearing safety equipment like respirators and eye protection, using the appropriate disc speed, and avoiding sudden, unexpected motion.

Sanding discs come in an assortment of grit ratings from very coarse to fine, which determine the rate at which they can remove material and its final finish. A coarse grit disc provides more aggressive sanding action than fine grit discs. Replacement of sanding discs should also be regular or as they show signs of wear, to ensure optimal performance and prevent unnecessary tool damage. You can quickly determine the type of abrasive in any disc by viewing its label; most bonded ones display material, then size/grit size and any special characteristics on one line before any other information.


Silicon carbide is a synthetic material manufactured by heating silica sand and carbon in a furnace at high temperatures, creating durable abrasive grains used in sanding discs. Because this hard, sharp material can withstand the pressures associated with high-speed sanding operations – ideal for heavy duty metal sanding applications – silicon carbide makes a versatile addition to the metal sanding toolbox.

Silicon carbide sanding discs’ sharp edge allows them to cut quickly through material, saving both time and effort on large projects while providing smoother finishes with reduced risk of surface damage.

Silicon carbide sanding discs can be used in woodworking to prepare surfaces for paint application and remove rough edges, as well as between finishing coats sanding between them. Furthermore, they can even be used to deburr metal parts and polish parts in automotive applications.

These discs are suitable for grinding softer materials like marble, glass, cork, stone or medium-density fiberboard, but may not perform as effectively on harder materials like metal or wood due to less resilient abrasive grains that wear down more quickly.

Silicon carbide sanding discs and aluminum oxide sanding discs are often combined when working on metal projects, since aluminum oxide works better on various kinds of metal, while silicon carbide tends to perform less effectively on harder materials like stainless steel or other harder metals. A combination of both disc types will ensure that your project is completed successfully.

Another aspect to keep in mind when purchasing silicon carbide sanding discs is their type of backing. Paper or cloth-backed discs tend to be more flexible for sanding curves and contours while resin bond discs tend to be more durable and suitable for heavy-duty sanding tasks.

BHA provides a selection of sanding discs designed to meet all your project requirements, with sizes and grits to suit every job. Find quick-change compatible abrasive discs for tool-free swap outs at high speeds while maintaining secure attachment.


Silicon carbide (SiC), is an outstanding synthetic material known for its incredible hardness and resilience, making it a fantastic material choice for use in sanding discs to increase performance and precision sanding.

These discs’ abrasive grains are produced by heating sand and carbon to high temperatures in an electric resistance furnace, creating sharp cutting surfaces with superior durability against abrasion and wear that require no replacement after only limited use. As such, they’re suitable for both dry and wet sanding applications without needing replacement in a short amount of time.

Woodworkers love these discs as they’re perfect for scraping old paint off surfaces, smoothing rough edges and shaping surfaces. Automotive restoration and bodywork teams also utilize them as they quickly remove rust, sand out body filler and prepare surfaces ready for painting.

These discs are also ideal for prepping concrete and masonry surfaces, polishing stone and ceramic tiles to a professional finish, as well as for grinding hard materials like concrete and stone with ease. On the contrary, diamond discs perform better on harder materials such as metals which may be damaged by their abrasive surface.

Follow best practices when using these sanding discs, so as to protect both yourself and your workspace. Wear proper safety equipment including eye protection and a dust mask in order to minimize exposure to abrasive particles, as well as to avoid overheating the discs by applying moderate pressure and following recommended speed settings for your application. Keeping them stored away safely when not being used helps limit contamination while prolonging lifespan.

To maximize efficiency when sanding, it is best to start at the lowest grit and work your way upward. Lower grits will remove more material faster while higher grits will smooth and polish surfaces more. As you progress, be sure to switch out discs regularly as worn abrasives may become worn down or clogged with debris; plus these discs tend not to get as clogged up over traditional paper sandpaper, enabling even and effortless sanding which results in polished finished products!


Silicon carbide sanding discs have the hardness required to withstand significant pressure, making them suitable for heavy material removal such as metal sanding. They’re not recommended, however, when working with soft materials like wood as their dust may cause health concerns when inhaled; eye protection and dust masks should therefore always be worn when using these discs.

Silicon carbide boasts remarkable heat resistance, helping prevent thermal degradation during the sanding process and is especially helpful when working with applications that generate an abundance of heat, such as concrete sanding.

Durability-wise, these sanding discs are also highly resistant to impact and abrasion – meaning that they can withstand repeated wear without wearing out or breaking down. In fact, these high-pressure sanding applications such as smoothing down rough surfaces or finening out coarse material are perfect applications of these durable discs.

These sanding discs come in an assortment of sizes and grits, making them a versatile solution for many different projects. Ideal for use sanding glass, stone, wood and more – whether wet or dry applications; with paper backing and/or cloth support; as well as having or without an arbor hole;

when selecting a sanding disc, it’s essential to keep two factors in mind when making your selection: Grit size and backing material type. Grit size determines how rough or smooth the sanding experience will be – for instance a coarse grit disc contains larger grains than fine ones – while backing material can impact how the disc performs and its durability.

Paper backings tend to be more flexible than cloth ones, making them better suited to sanding curves or contours. Furthermore, resin bonds may impact heat tolerance and durability as well as impact pressure handling capacity of discs. Furthermore, its diameter impacts how much pressure can be handled at once.

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