Abrasives

There are so many options when it comes to choosing the right blast media for a particular finish.

Productivity and cost must be the first consideration when making this decision, although, sometimes a specific finish can only be achieved with a media that may be more expensive than others.

Factors to consider when choosing the right media:

  • Particle size
  • Particle shape
  • Material density
  • Material hardness
  • Friability (how easily it shatters)

Below is a very comprehensive list of abrasives wetblasting.com can provide. I think that you will quickly see how difficult it is to make this choice. Do some research and remember, you can always… ask Rick!

 

Products Image Mesh/Grit Size Range Grain Shape Color Mohs Hardness Typical Application Metal Removal
3M© Colorquartz 1 12 & 40 mesh Sub-angular Various 6.5-7 Decorative floors, pools, anti-slip N/A
Alumina (Calcined) 2 1-50 micron Hexagonal, platy White 9 Polishing, lapping, refractories, ceramics, fire retardants/smoke suppressant Slight
Alumina Zirconia 3 4-1200 Grit Hexagonal crystals Gray 9 Abrasive blasting, casting & foundry applications Medium to Heavy
Aluminum Oxide-Brown (fused alumina, corundum) 4 4-1200 Grit Hexagonal crystals Brownish Gray 9 Cleaning, anti-slip Medium to Heavy
Aluminum Oxide-White (fused alumina, corundum) 5 4-1200 Grit Hexagonal crystals White 9 Polishing, lapping, abrasive micro blasting, anti-slip Medium
Anthracite 6 N/A Hexagonal crystals Blackish Brown 8 Water Filtration N/A
Armex® Sodablast OLYMPUS DIGITAL CAMERA 60 – 180 Mesh Crystalline White 2.5 Cleaning, paint removal, degreasing, mold removal None
Bauxite Beads 8 12/18 – 60/100 Mesh Spherical Beads Black 6.5 Abrasive blasting Medium to Heavy
Boron Carbide 9 4 – 1200 Grit Blocky, sharp edges Black 9.3 Grinding wheels, cutting tools, scratch & wear resistant tools Medium to Heavy
Cab-O-Sil Fumed Silica 10 Sub Micron Fine Powder White 7 Increases Bulk Density for adhesives, sealants, coatings, cosmetics, pharmaceuticals, composites, elastomers, foods, and inks N/A
Calcium Carbonate  11 4-200 Mesh Fine Powder White 3 Paint extender, filler for plastics, adhesives, sealants, additive to cement None
Ceramic Beads  12 60-325 Mesh Spherical Beads White 9 Abrasive cleaning, peening and finishing Slight
Cerium Oxide  13 Micron Sizes Fine Powder Pale yellow-white 2.5 Glass polishing, filler for ceramics Slight
Coal Slag  14 12/30, 12/40, 20/40, 30/60, 40/80 Mesh Hexagonal crystals Black 8 Abrasive blasting, turf filler Medium to Heavy
Colored Glass  15 1/2″ – 1/32″ Blocky, sharp edges Various 5 Decorative conrete, terrazzo applications N/A
Corn Cob Grit  16 10/14 – 80 & Finer Mesh Blocky Brownish Yellow 4.5 Abrasive cleaning & finishing, polishing, slight deburring, absorbent media None
Crushed Glass  17 14/18 – 170 & Finer Mesh Angular, sharp edges Mixed colors, clear, crystal clear 5 Abrasive cleaning, anti-slip, filtration Medium
Diamond Compound  18 Micron Sizes Liquid Various 10 Lapping, mold, tool & die polishing Medium
Diamond Powder  19 Micron Sizes Fine Powder Various 10 Lapping, mold, tool & die polishing Medium
Diamond Slurry  20 Micron Sizes Liquid Various 10 Lapping, mold, tool & die polishing Medium
Dry Ice  21 1/8″ Pellet White < 2 Gentle cleaning None
Emery  22 Micron Sizes Fine Powder Dark Gray to Black 8.5 Abrasive polishing Medium
Feldspar  23 325 Mesh and Finer Fine Powder Light Gray 6 Filler for ceramics and glazing materials N/A
Filter Sand  24 1/2″ to 325 Mesh Sub-round Light Brown to Light Beige 7 Liquid filtration N/A
Fluidized Bed Media  25 40-200 Mesh Sub-round Light Brown to Light Beige 9 Heat Treating or Vulcanization N/A
Garnet  26 8 – 1200 Grit Angular to Sub Angular Red 6.5 Abrasive cleaning, liquid filtration Medium to Heavy
Glass Beads  27 20/30 – 270 & Finer Mesh Sub-round to Round Clear 5.5 Abrasive cleaning, peening and finishing None to Slight
Gravel  28 1/2″- 1/8″ Sub-round Light Brown to Light Beige 7 Liquid filtration, concrete manufacturing, decorative landscaping N/A
Hollow Glass Spheres  29 10-300 microns Spherical Gray 5 Lightweight additive for resin systems (cement, sealants, grout) N/A
Military Specification Materials  30 Specification Dependent N/A N/A N/A Blasting and other uses N/A
Nepheline Syenite  31 100 Mesh and Finer Fine Powder White 6 Used in production of ceramics and glazing materials N/A
Novaculite  32 100 Mesh and Finer Fine Powder White 7 Filler for resin systems, abrasive wet cleaning Slight
Optical Polishing Powders  33 Micron Sizes Fine Powder Pale yellow-white to light tan 2.5 Glass polishing, filler for ceramics Slight
Plastic Grit  34 10 – 200 Mesh Sub-round to Angular Various 3.5 Light to heavy abrasive cleaning and finishing None
Porous Glass Spheres  35 16 mm to 100 micron Spherical Off White 5 Lightweight filler and insulator for resin systems (cement, rubber, plastic) N/A
Pumice  36 1/4″ -Micron Sizes Fine Powder Off White 5.5 Additive for cement, polishing Slight
Quartz  37 12/20 – 325 & Finer Mesh Angular, sharp edges Opaque 7 Abrasive cleaning, concrete filler N/A
Silica Flour  38 140 Mesh to Micron Sizes Fine Powder Light Beige 7 Filler for resin systems N/A
Silica Sand  39 4 to 270 Mesh Sub-round Beige to Light Beige 7 Liquid filtration, manufacturing of glass and anti-slip application N/A
Silicon Carbide  40 8 – 1200 Grit Angular, sharp edges Black 9.5 Lapping, cutting tools, anti-slip Medium to Heavy
Slurries  41 240 – 1200 Grit Liquid Various 10 Lapping, mold, tool & die polishing Slight
Starblast®  42 30/60 – 70/140 Mesh Angular, sharp edges Dark Brown, Maroon 6.5 Abrasive cleaning, anti-slip, filtration Medium
Steel Grit  43 10 – 120 Grit Angular, very sharp edges Grayish Black 40 – 60 HRC Cleaning, coatings Heavy
Steel Shot  44 780 – 70 SAE Sizes Round Black 40 – 51 HRC Cleaning, peening and finishing Slight to Medium
Vinyl Chips  45 1/16″ – 1″ Asymmetrical Various < 2 Decorative flooring, wall systems N/A
Walnut Shell  46 6 – 325 Mesh Angular, multi-faceted Dark Brown 3.5 Cleaning, paint removal, degreasing, mold removal None
Zircon  47 120 Mesh Average Sub round Light Brown 7.5 Foundry, investment castings, refractory, ceramics N/A