Premium Silicon Carbide Polishing, Tumbling, and Lapidary Abrasive Media. Condition is New. Shipped with USPS Priority Mail.

Silicon Carbide (SiC)is an extremely hard (9.5 on MOHS scale) abrasive with sharp edges. It is well suited for non-metallic materials such as concrete, stone, glass, Carbide, and other hard materials. SiC is the hardest blasting media available, allowing for shorter blasting times. It is very fast cutting and can be reused multiple times. Silicon carbide is used as additive in paint and epoxy, wire sawing, etching glass and for tumbling rocks, as well as for pressure blasting very hard materials. Rock tumbling with silicon carbide is typically done in steps, starting with a coarser grit like 60/90, followed by tumbling with120/220 grit, then pre-polish (400 to 600 grit silicon carbide or aluminum oxide), and final polish with micro-grit aluminum oxide 2 to 6 micron. Almost all of our aluminum oxide and silicon carbide loose abrasive grains are considered very environmentally friendly because they are made by recycling grinding wheels, otherwise destined for the landfill.

Uses

  • Rock Tumbling
  • Blasting
  • Metal Lapping
  • Rock and Stone Polishing
  • Glass Lapping and Polishing
  • Finishing Strong/Hard Materials
  • Gears and Engine Component Lapping
  • Grinding Non-ferrous Metals
  • Glass Engraving, Etching, Carving
  • Other Applications: Grinding Wheel Manufacture, Non-Slip & Abrasion Resistant Aggregate/Grit/Media

SAME DAY SHIPPING on all orders placed before 1:00 Central Time!
Significant SAVINGS by ordering larger quantities
SAVE by combining grit sizes (up to 25 lbs. per box), List sizes and request total


We offer our silicon carbide in three different package sizes: 4 lbs., 20 lbs., and 40 lbs. Our 40 lbs. package is shipped in two 20-pound boxes and the others come in a single box.

We are able to size to any grit and offer grit sizes 20, 24, 36, 46, 46/70, 60, 60/90, 80, 100, 120, 120/220, 150, 180, 220, 240. These grit sizes conform to the American National Standards Institute (ANSI) B74.12-2001 ANSI Table 2 Allowable Limits for the Sizing of Aluminum Oxide and Silicon Carbide Abrasive Grain for Grinding Wheel Manufacture and General Polishing Purposes.

* Photos are of the correct type of abrasive blast media, not necessarily the exact grit size.

Silicon Carbide (SiC)

Synthetic Silicon Carbide is a silica-free, inert compound with a tough, crystalline structure and a uniform hardness of 9.5 on the MOHS scale (Diamond is 10). It performs as an excellent blast cabinet media where the grit is contained for re-use, capable of up to 8 or more reuses. These properties combined with uniform particle sizing provide high-speed production with excellent visibility (very low dusting) and lower air requirements. Unlike most other blast media, which are natural or by-products, synthetic SiC has uniform properties without random natural weaknesses, making it the most widely used abrasive in the world.

Abrasive Applications

  • Rock Tumbling
  • Polishing
  • Deburring
  • Wire Sawing
  • Surface Preparation to Increase Bond Strength of Paint or Coating
  • Etching, Frosting, or Producing a Matte Finish on Metal, Glass, or Stone
  • Water Jetting Media
  • Jobs Requiring a High Production Rate or Non-Ferrous Media
  • Blasting/Cutting Hard Materials
  • Removal of Rust, Paint, Scale, etc. from Fabricated Components
  • Cutting Stone, Metal, Glass, etc.
  • Creating Specific Surface Profile

Characteristics

  • Consistent Uniform Properties and Particle Sizes
  • Sharp, Angular Shape
  • 98.5% Minimum Purity
  • Wide Range of Specific Grit Sizes From Fine Powder to Large, Coarse Aggregate)
  • Reusable (number of uses mainly determined by air pressure)
  • High Hardness of 9.5 on the Mohs Scale (Diamond is 10)
  • Uniform Particle Size (no chunks, no dust)
  • Usable at Lower Air Pressures, Reducing Compressed Air Costs
  • Fast Production Rate
  • Controlled Consistent Properties
  • No Free-Silica

Looking for a more affordable alternative?

Try our aluminum oxide EconoblastTM! It's a special blend of white, pink, and brown aluminum oxides, as well as other abrasives that makes for a tougher and more economic choice in many applications. It performs as well as, if not better than, white aluminum oxide in most cases.

United Abrasive Inc.

United Abrasive Inc. is an industrial supplier with over 80 years of experience in the abrasive industry that recycles high energy-consuming, synthetic abrasive grains otherwise destined for the landfill, to provide quality, cost-effective abrasive for our valued customers. We can satisfy your needs with our extensive line of grinding, cutting, and grit blasting products. Whether it's for an at-home hobbyist or a metal fabrication facility, we strive to provide products that get the job done right. Our unique knowledge of abrasives qualifies us to provide competent answers to your questions, and capable to supply you with the most efficient abrasive products, saving you time, money, and frustration.

We stock a complete line of blast media, for shipping in all grit sizes, including our Aluminum Oxide (Brown, White, Econoblast, Type "W"), Slag, Corn Cob, Silicon Carbide, Sinter Balls, Steel Shot, Steel Grit, Walnut Shells, Glass Beads, Crushed Glass, Baking Soda, and Plastic Media.