Technical specifications of abrasive materials
Abrasive materials are essential for grinding, polishing, cutting, and surface preparation across many industries.
To choose the right product, it’s important to understand its technical properties.
This article breaks down the key performance characteristics of abrasives and what they mean for real-world applications.
1. Grit Size (GRIT)
This indicates the size of abrasive particles and determines the surface finish.
- P24–P60 — heavy stock removal
- P80–P150 — general-purpose sanding
- P180+ — fine finishing
📌 The higher the number, the finer the grain.
Choose grit size based on the material and processing stage.
2. Grain Type
The type of abrasive grain impacts durability, cut speed, and application area:
- Aluminum oxide — versatile, for wood and metal
- Silicon carbide — sharp and brittle, ideal for stone and glass
- Zirconia alumina — durable, for high-pressure metal grinding
- Ceramic grain — long-lasting, self-sharpening
⚙️ Selecting the right grain ensures cutting efficiency and material savings.
3. Backing Material
Backing affects flexibility, wear resistance, and use case:
- Paper — for hand sanding
- Cloth — for machine sanding and durability
- Film — for precision finishing
Stronger backings are better for aggressive grinding.
4. Bond Type
The bond holds abrasive grains to the backing:
- Resin bond — flexible and heat-resistant
- Rubber or ceramic bonds — for special applications
Reliable bonding ensures consistent tool performance.
5. Special Coatings
Modern abrasives may feature:
- Anti-loading layers (steart)
- Cooling additives
- Heat-resistant coatings
These reduce clogging and overheating, improving lifespan and finish.
Understanding abrasive specifications is key to selecting the right product.
At Stark Abrasive, we offer materials with an ideal balance of grit, backing, and bonding — engineered to perform in any application.
Scotch-Brite radial brushes™ BB-ZB are usually used on stationary equipment, for example, on grinding and grinding machines with manual feed of the part to the machine or on pass-through machines with automatic feed of the part.
To remove paint, stains , adhesives, weld burns, rust, heavy oxides and surface contamination from various metals, use Scotch Brite™ Radial Bristle Brush. Brushes use our proprietary 3M™ Ceramic Abrasive Grain, including aluminum oxide, with molded, flexible yet firm bristles that provide more surface contact than brushes. We have increased the life compared to wire and other abrasive discs. Abrasives wear down gradually over the life of the product, and they work well on a variety of metals, including aluminum, brass, bronze, carbon steel, cast iron, stainless steel, and more. Ceramic abrasive grain is a ceramic mineral manufactured using the 3M process to increase grain strength and hardness. Discs Scotch Brite™ uses aluminum oxide mixed with a ceramic abrasive grain, and the result is one of the hardest, longest-lasting minerals. Ceramic abrasives are designed to cut and machine quickly under intense heat and stress. Ceramic abrasive grain is superior to aluminum oxide abrasives in terms of speed and durability. It can be used for industrial grinding and finishing. Scotch Brite Industrial Abrasives are unique surface preparation products with abrasives embedded in non-woven nylon or synthetic fibers. Combining abrasives with fibers creates an abrasive system that provides consistent results throughout the life of the product.
Scotch-Brite™ The 7447+ sanding sheet combines flexibility with efficient and precise processing. Our sanding sheet provides consistently excellent sanding results for a variety of tasks, including: rough cleaning. Fine-grained aluminum oxide abrasives allow for quick and precise machining to achieve a uniform surface.
Use Scotch Brite™ Hand Pad 7447+ to produce consistent finish results across a variety of tasks, even the most demanding tasks. Our hand pads combine flexibility, cutting efficiency and precise manual control for ease of use. They are suitable for use on wood, metal, plastics, ceramics, porcelain, glass, rubber or composites.
Petals End Conical Disc 3M ™ 577F with P40 grain and 125mm diameter consists of aluminum zirconate in a dense polyester base. It is used for hard metals, stainless steel.
3M™ Flap Disc 769F – is our durable, high-performance abrasive flap disc with precision-shaped grains from 3M™ Precision-Shaped Grain and durable polyester base.
3M™ Flap Disc 769F – convenient, strong, efficient and universal petal disc. Our discs are coated with 3M™ Precision-Shaped and proven to be more effective than traditional zirconium corundum petal discs. This abrasive is constantly breaking down to form sharp particles that cleanly cut metal, unlike traditional abrasives that tend to plow through the substrate. This breaking down into particles, together with the destruction of individual petals to release fresh layers of mineral, ensures a high grinding speed that is stable throughout the life of the disc. Polyester base additionally extends durability. Together with the high adhesion, this makes the discs an ideal choice for high-pressure jobs such as beveling, grinding welds and deburring edges. In addition, they create clean surfaces, which makes them indispensable for smoothing and surface preparation. In many cases, 3M™ Flap Disc 769F provides sanding and finishing without changing the abrasive tool. This is possible because under normal conditions the 769F disc finish is one step thinner than a fiber disc of the same grade. Although the fiber disc grinds faster, this petal disc simplifies the process flow, eliminating the need to change tools, which saves time and increases productivity. An ideal choice for processing carbon steel, stainless steel and other alloys sensitive to high temperatures.
