3M™ Microfinishing Film Sheet 472L

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Micron-graded silicon carbide mineral cuts sharp and fast while producing extremely consistent, fine finishes

High-strength 5 mil polyester backing won’t yield or deflect when run, contributing to aggressive cut

May be used on metal, plastic, wood and various other substrates

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Details

Highlights
  • Micron-graded silicon carbide mineral cuts sharp and fast while producing extremely consistent, fine finishes
  • High-strength 5 mil polyester backing won’t yield or deflect when run, contributing to aggressive cut
  • May be used on metal, plastic, wood and various other substrates
  • Open coat construction reduces loading
  • Available in a range of grades

The 3M™ Microfinishing Film Sheet 472L is designed to deliver uniform, consistent finishes on parts where a close tolerance finish is essential. Micron-graded silicon carbide mineral is ideal for finishing metals, plastics, wood and various other substrates. The sheet comes with an anti-slip backsize.

Built for Microfinishing
On flat parts, like die castings, and cylindrical or contoured workpieces such as auto parts — consistent and predictable finishes are key. 3M™ Microfinishing Film Sheet 472L helps produce fine finishes and achieve close tolerances by way of a durable, uniform film backing and micron-graded mineral. Recommended applications are finishing on metals, plastic, wood and various other substrates.

Available in a sheet form, the film may be cut to match the dimensions of a back-up pad or hand pad. This flexibility enables operators to reap the benefits of a microfinishing film and still tackle tough areas that might be inaccessible to other tools and machines.

Smooth, High-Strength Polyester Backing
Compared to conventional cloth and paper backings, the uniform smoothness of film provides a far more consistent substrate for the precise application of resins and micron-graded mineral. The high-strength 5 mil polyester backing won't yield or deflect when run, which is helpful when close tolerances are important. With uniform backing the abrasive maintains consistent contact with the workpiece to maintain critical geometries.

Micron-Graded Silicon Carbide Mineral Bonded with Type E Resin
We engineer Microfinishing Film Sheet 472L by adhering micron-graded silicon carbide mineral to the film backing with a resin bond. In order to achieve an extremely consistent scratch for microfinishing, we use micron-graded mineral, which is measured at a very tight tolerance for size. The resin bond helps ensure reliable, durable performance.

Silicon carbide mineral is very hard and fractures easily, resulting in freshly exposed sharp edges that cut extra fast and produce a bright finish. Film Sheet 472L is available in a variety of grades, so operators can tailor the grade to their part.



Open Coat
Open coat construction helps prevent loading, which occurs when swarf clogs the surface of the sheet and the abrasive and can quickly make the sheet ineffective. With the abrasive grains spaced apart in an open coat that swarf can exit via the spaces rather than loading the sheet. Additionally, the open coat feature provides a more aggressive cut than a comparable closed coat abrasive of the same grade, for faster results.

Get Close to the Close Tolerance
Across industries, from transportation to heavy equipment, from general industrial to aerospace, professionals value part integrity and consistency. Combining the strength of a polyester film backing with the aggressive cutting qualities of micron-graded silicon carbide, 3M™ Microfinishing Film Sheet 472L is a good match for workpieces that require precise and uniform cutting action.

Learn More About 3M Abrasive Products for:
3M™ Microfinishing Films
Product Mineral Backing Caliper
(0.001")
Backside Grades (Microns)
9 15 20 30 40 45 50 60 74 80 100 125
372L Aluminum
Oxide
5 Type S      
372L Type 2*
(colored)
Aluminum
Oxide
5 Type S          
373L Aluminum
Oxide
5 Type Q      
373L Type 2*
(colored)
Aluminum
Oxide
5 Type Q          
382L Type 2
(colored)
Aluminum
Oxide
6 Type S              
362L Aluminum
Oxide
3 Type S          
272L** Aluminum
Oxide
5 Type S      
472L Silicon
Carbide
5 Type S              
675L Diamond 5 Type S                
Diamond 6 Type S                    

*Suggest to specify the 372L or 373L type 2 (colored) film whenever possible to assist with Error-proofing.
**European Lead Product. Plus wide rolls and belts globally.

Typical properties

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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.