Scotch-Brite™ EXL Unitized Block

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EXL material offers great durability and edge retention for tough burrs and sharp edges

Highly durable block is suitable for a wide range of deburring and finishing applications

Cut-to-size block may be shaped according to application

Frequently viewed resources

Safety Data Sheet (PDF)

Abrasive Material

Grade

Density

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Details

Highlights

EXL material offers great durability and edge retention for tough burrs and sharp edges
Highly durable block is suitable for a wide range of deburring and finishing applications
Cut-to-size block may be shaped according to application
Available in a range of grades, minerals and densities
Nylon fibers break down to expose fresh mineral, leading to more consistent finishes
Gaps between fibers permit debris to escape, helping with load resistance

Scotch-Brite™ EXL Unitized Block is a strong, durable high-performance block built for a wide range of deburring and finishing applications. One of the best benefits of a unitized block is that it can be converted into another form: shape it into mounted points, use it by hand or bond it to tools for honing.

Tailored to Fit: Picking Mineral, Grade and Density
Scotch-Brite™ EXL Unitized Block comes in a few variations, making it easy for operators to find an abrasive tailored to their application. Unitized densities, for example, range from 2 to 8. Likely, a density of 2 is a good choice when trying to keep part geometry intact. Flexible and soft, low-density abrasives tend to conform better to the workpiece. Conversely, if a workpiece requires a stiffer, harder abrasive, a density of 8 may be a better choice. Priorities shift depending on the workpiece and application; we created the unitized block in a few different densities for these reasons.

Density	Grade	Grain
5 = Soft	1 = Coarse	1 = A/O
6 = Soft/Medium	2 = medium	2 = S/C
7 = Medium/Hard	2 = medium	4 = S/C
8 = Hard		Firm*
9 = Extra Hard		*Available only as a Type 524

In addition to densities, operators can choose from different grades of aluminum oxide and silicon carbide. Aluminum oxide is a synthetic mineral known for its high cut-rate, hardness, strength and low heat retention. It is suitable on a wide variety of substrates in both woodworking and metalworking, including ferrous alloys. Silicon carbide is used for creating different aesthetic finishes. It tends to wear faster than aluminum oxide but leave brighter finishes.

Mineral Performance Comparison
Our Standard Abrasives™ Surface Conditioning GP Belt is engineered to provide a consistent cut-rate while producing a uniform finish. Constructed of resin-reinforced non-woven fibers, this belt resists loading and minimizes under-cutting or gouging of the workpiece.

Our Standard Abrasives™ Surface Conditioning GP Belt is engineered to provide a consistent cut-rate while producing a uniform finish. Constructed of resin-reinforced non-woven fibers, this belt resists loading and minimizes under-cutting or gouging of the workpiece.

Built for Strength
Scotch-Brite™ EXL Unitized Block does offer uniform benefits, including durability and consistency. Unitized products are produced by compressing and curing multiple layers of abrasive material together. The tough and layered unitized construction gives the abrasive more durability, helping it resist wear and stand up to tough areas like edges and contours.

It is suitable on a wide variety of substrates in both woodworking and metalworking, including ferrous alloys.

Open web construction for the toughest jobs

The Many Benefits of Scotch-Brite™ Abrasives
Altogether, nonwoven technology makes our Scotch-Brite™ industrial abrasives unique. A combination of fiber strands, resin, and abrasive mineral forms a thick, open web. The spring-like nature of the fibers responds to contours and effectively removes unwanted burrs, soils, and contaminants while maintaining the geometry of the workpiece, which in turn reduces rework and boosts productivity. Gaps in the web allow swarf to escape, so debris does not clog the mineral. Fibers in the web continually break down with use to reveal fresh mineral for consistency, sharp cut and long service life.

From aesthetic finishing to weld blending, deburring, and more, Scotch-Brite™ abrasives work fast and deliver consistent results, part after part.

Typical properties

Details

Abrasive Material	Aluminum Oxide, Silicon Carbide
Backing Material	Non-woven
Brands	Scotch-Brite™
Density	2 , 3 , 4 , 6 , 8
Density Rating	Hard, Soft/Medium
Grade	Coarse, Fine, Very Fine, Medium
Product Color	Gray
Product Form	Unitized Block

Dimensions and Classifications

Overall Length (Imperial)	25 in
Overall Length (Metric)	635 mm
Overall Thickness (Imperial)	0.125 in, 0.25 in, 0.375 in, 0.5 in, 0.75 in, 1 in
Overall Thickness (Metric)	3.175 mm, 6.35 mm, 9.525 mm, 12.7 mm, 19.05 mm, 25.4 mm
Overall Width (Imperial)	12.5 in
Overall Width (Metric)	317.5 mm

Resources

3M™ Scotch-Brite™ EXL Unitized Debur and Finishing Wheels, Blocks, 4A FIN, 6A FIN

Safety Data Sheets

Document Number: MSDS_2602696_US_EN

(PDF)

3M™ Scotch-Brite™ Products, EXL Unitized AMED, Products, Wheels, Blocks, Discs, Roloc™ TR; TS

Safety Data Sheets

Document Number: MSDS_2667285_US_EN

(PDF)

3M™ Scotch-Brite™ Products, EXL Unitized S FIN, S MED, S VFN Products, Wheels, Blocks, Discs, Roloc™ TR, Roloc™ TS

Safety Data Sheets

Document Number: MSDS_2666923_US_EN

(PDF)

3M™ Scotch-Brite™ Products, EXL Unitized Wheels, Blocks, Slabs A-CRS

Safety Data Sheets

Document Number: MSDS_2435329_US_EN

(PDF)

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.