What Is a Silicon Carbide Disc?

Silicon carbide is an extremely hard and sharp material used to craft various types of abrasive tools. Sanding discs made from this material provide quick removal of debris for smooth results.

These discs feature either paper or cloth backing and use a resin bond to hold their grains securely in place. Available in various grit sizes for coating removal applications.


Silicon carbide is an extremely hard and durable material, making it the ideal material for use in sanding discs. These tools are made from an alloy composed of silicon and carbon arranged in a crystal lattice similar to diamonds; this unique structure allows silicon carbide abrasives to withstand high-pressure applications while still maintaining sharp edges longer than competing abrasives. Furthermore, silicon carbide’s lightweight structure makes it corrosion resistant, making it suitable for aerospace engineering, automotive bodywork repair work, materials science research.

Silicon carbide discs are widely utilized within the automotive industry to smooth and prepare surfaces for painting. Their sharp edges quickly remove old paint or surface rust for a flawless surface ready for paint application. Silicon carbide discs also are frequently employed when sanding or grinding floors and walls; Black Hawk offers various grit sizes so that you can find just the right disc for your project.

Silicon carbide’s hardness and durability make it an excellent material for use in machining applications such as cutting, grinding and water-jet cutting. Furthermore, its low thermal expansion helps maintain an even working temperature when working with heat-sensitive metals; in fact, these qualities also make it suitable for metallography where it serves to prepare samples for microscopic analysis.

Silicon carbide abrasives have increasingly become more advanced and suitable for higher-stress applications, offering razor-sharp grains to cut glass, plastics and medium density fibreboard with light pressure while handling heavy hardwood sanding with ease. Silicon carbide also proves much more suitable than aluminium oxide when it comes to rough sanding or coarse applications as its effectiveness remains consistent over time.

Silicon carbide’s abrasive properties make it an excellent choice for sanding ceramics, stones and metals alike. Washington Mills’ CARBOREX(r) silicon carbide powder from Washington Mills is also used in high performance composite materials used in aerospace, automobiles and power generation applications; offering exceptional durability, resistance to wear and stress resistance as well as being thermal shockproof – helping these critical components meet industry standards and exceed them over time.


Silicon carbide discs resemble belts or disks covered with thousands of razor-sharp knives. Their razor-sharp grains make these abrasives so effective and fast at removing material, and as they wear down, their brittle grains break apart to reveal new sharp edges, providing consistent cutting performance over their lifespan.

As one can expect, abrasives made of these materials have many uses in various fields. Woodworkers might use them for tasks like sanding rough surfaces or prepping woodwork prior to finishing; automotive enthusiasts could use them for smoothing body filler and priming car surfaces for paintwork.

These types of abrasives are also widely used in metalworking applications, where they’re employed to remove mill scale and rust from aluminium castings or mild steel components. Furthermore, they’re found in aerospace companies for polishing titanium alloy aircraft parts.

These abrasives are frequently employed on metal surfaces due to their superior hardness and sharpness, with their ability to maintain shape under heavy pressure while producing fine scratch patterns, making them suitable for grinding or finishing tasks that require precision and accuracy. Furthermore, thermal shock resistance ensures they won’t get damaged during periods of extreme heat or pressure exposure.

Silicon carbide abrasives’ sharp edges and durable construction make them an excellent choice for grinding or polishing hard natural stone materials like marble, granite or stone. Furthermore, they can also be used to sand or grind non-ferrous metals such as fiberglass (boat hulls) and concrete as well as masonry mediums like glass ceramic terrazzo. Their closed coat features ensure optimal grain coverage when being used dry; this allows them to cut through thick epoxy glue sealants or urethane coatings while still producing high quality finishes.


Silicon carbide is one of the hardest materials, making it perfect for applications requiring high levels of pressure when sanding. Furthermore, this material is heat-resistant and can withstand higher temperatures than aluminum oxide discs; however it’s essential that when working with these discs that a protective mask be worn to avoid inhaling dust particles created during sanding.

Silicon carbide can be used not only for sanding but also grinding, cutting and polishing applications. It comes in different grit sizes that can be wet or dry used to suit various applications as well as being resistant to corrosion allowing its use on metals as well as non-metals such as stainless steel.

Silicon carbide’s superior hardness and thermal conductivity make it an invaluable raw material in multiple fields, including aerospace, semiconductors and materials science. Aerospace manufacturers rely on SiC powder for creating engine components designed to withstand extreme temperatures while resisting thermal shock; similarly it enables efficient heat dissipation during wafer processing in semiconductor manufacturing plants.

Silicon carbide sanding discs offer durability and efficiency when it comes to sanding projects, saving both time and money on each task. Their sharp edge helps you remove materials quickly and efficiently – ideal for glass, stone and other masonry surfaces alike. However, when selecting discs for each use it’s essential that safety and durability are both taken into consideration.

As an example, when working on natural stone surfaces it’s recommended that you use a rough sanding disc and for polished finishes a fine one should be used. Furthermore, using the correct speed can prevent premature wearout of discs or gouges in surfaces from occurring.

For those seeking to sand or grind natural stone, the BHA 7″ x 7/8″ Silicon Carbide Resin Fiber Discs are an excellent option. Designed to withstand light to moderate pressure during grinding, sanding and polishing applications – be it wet or dry use – these discs make an ideal alternative to regular sandpaper – made with high quality silicon carbide abrasives that adhere securely to durable vulcanized depressed center/domed backings – ideal for removal of epoxys, sealants, mastics sealants urethanes paint from concrete surfaces as well as other masonry surfaces.


Silicon carbide sanding discs are versatile sanding tools designed to work on many surfaces and with different grit sizes, providing long-term quality results across a range of surfaces and projects. From shaping natural stone, sanding down glass, or refinishing wood flooring – whether shaping natural stone, sanding down glass, or refinishing wood flooring, you will receive high-quality results that last. Silicon carbide is one of the hardest materials available and can withstand even heavy-duty sanding tasks while being very sharp and durable so it cuts through hard materials like metal and wood effortlessly – quickly so your project can be finished quickly and efficiently!

These discs are also durable, so you don’t have to worry about using them repeatedly without worrying about them quickly wearing out. But it is essential that the correct technique be utilized when using these sanding discs; such as wearing eye protection and dust mask when working with them; using recommended disc speeds; applying light pressure while making consistent movements so as to prevent gouges or scratches in material surfaces from goinguges and scratches caused by digging into surfaces using improper pressure; as this will protect both you and your material surface from gouges or scratches from digging into surfaces causing gouges or scratches!

Silicon Carbide discs offer long-term use for metallographic and petrographic coarse grinding of various materials. Made with premium-quality abrasive grain attached to tough resin bonding for increased durability and consistency, these waterproof discs also boast superior flatness which reduces distortion to your samples. Available with either plain or PSA backs in various grit sizes.

Abrasives play an essential role in many industrial applications. Available in all sorts of shapes and sizes, abrasives can be used both hand sanding as well as power sanding. A popular form of abrasive grain is silicon carbide; this material has many applications across numerous industries and can withstand high temperatures making it an excellent option. This material can even be found as powder form so that pastes or discs can be made using them!

Scroll to Top