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  6. 3M™ Paper Sheet 346U, 40 D-weight, 9 in x 11 in, 50/Pac, 250 ea/Case

3M™ Paper Sheet 346U, 40 D-weight, 9 in x 11 in, 50/Pac, 250 ea/Case

  • 3M Product Number 346U
  • 3M ID 60070003474
Overall Width (Metric) 279.4 mm
Product Form Sheet
Grit P40
Backing Weight D Weight
Overall Length (Metric) 228.6 cm
Mineral Type Aluminum Oxide

Good on soft materials

Longer life

Durable

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Details

Highlights
  • Good on soft materials
  • Longer life
  • Durable
  • Sheets are conformable to various workpieces and usable by either hand or machine
  • Sheets come in a number of sizes to accommodate various applications

An aluminum oxide open coat sheet constructed on a D weight paper backing.

Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.

Learn more about 3M™ Industrial Products for Metalworking (PDF, 13 Mb)

Typical Properties

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