Black silicon carbide (Carborundum) is harder than aluminum oxide, and is generally used for the abrasive wheel, slurry, refractory and ceramic industries. Silicon Carbide is special in the way it breaks down. As it breaks down into smaller particles, the media will expose new, sharp edges. Therefore, black silicon carbide can be best used over and over, such as in a rock tumbler. Simply keep adding new coarser grit, and as the media breaks down, it will create a "working blend" of particles.
Silicon Carbide has a lower hardness and abrasive capacity than diamond and boron carbide. Yet because of its much lower cost when compared with diamond or B4C, it is widely used for grinding nonferrous materials, finishing tough and hard materials, as well as filling up ceramic parts. It is therefore perfect for sandblasting, vitrified and resinoid grinding wheels, lapping, compounds, non-slip (anti-skid), wiresawing silicon & quartz, polishing, lapping, and tumbling. Please use our Quote Request Form for Wholesale Price Inquiries.
We can provide purities up to 99.99%, as well as Ready-To-Press (92%+ purity) Formulations and Sinter Grade SiC Powders (up to 99.5% purity), but these are special items and cannot be ordered online.
Sizes Available:
- Macro Grit Sizes: 8 grit - 240 grit (ANSI); P12 - P220 (FEPA).
- Micro Grit Sizes: F280 grit - F1200 grit (FEPA); P240 - P3000 (FEPA)
- Split Sizes: 46/70, 54/70, 60/90, 100/120, 120/220, 150/220, , 180/240, 500/600, 800/F
Minimum order for black silicon carbide is a 10lb box. Wholesale packaging = 200-300lb drums depending on grit size (50 lb bags also available in come cases). Repackaging/Processing lead times are currently around one week (usually ~3 business days), but will ship sooner if possible. Standard packaging is a 300lb drum.
Other common applications include:
- Ceramic, metal lapping, and polishing applications
- Slicing of silicon carbide wafers
- Rock and stone polishing and engraving
- Slicing, lapping, and polishing glass and germanium wafers
- Lapping of piston rings and gears
- Grinding of nonferrous materials
- Finishing tough and hard materials
- Bonded abrasive tool applications
- Glass etching and glass carving industries
- Rock tumbling industries
- Making concrete "sparkle" in the sunshine
Specifications of Silicon Carbide:
- Thermal Conductivity: High (100 W/m-K) approximately.
- High strength at elevated temperatures (at 1000°C, SiC is 7.5 times stronger than Al2O3).
- Black Silicon Carbide contains some free silicon (Si) and carbon (C) and is not as pure as Green SiC.
- Incompatabilities: None
- Gradation: Coarse grades meet both ANSI & FEPA; 220 and Finer grades are FEPA Graded, "P" shaped particles are also available. The entire ANSI and FEPA gradations are available. "P" shaped media cannot be ordered online, you will need to call or email us for pricing.
- Macro Grit Sizes: 8 grit - 240 grit (ANSI); P12 - P220 (FEPA). Micro Grit Sizes: F280 grit - F1200 grit (FEPA); P240 - P3000 (FEPA)
- Typical Packaging: 300lb Drums, 50lb bags, 25lb boxes
- Odor: Odorless
- Safety: Avoid breathing dust; wear protective gear
- Purity: 99% approximate
- Friability: Semi-Friable
- Pricing Based Per: Pound
- Structure: Monocrystalline
- NMF Classification: Class 55
- Fire & Explosion: Fines can cause explosion and smolder
- Keep away from all sources of ignition
- Color: Black
- Hardness: Knoop 2480 - 2550 / Mohs 9.1
- Instability: Stable
- Hazardous? Not listed as hazardous; see other cautions
- Disposal: According to Federal, State, Local regulations
- Grain Shape: Blocky, sharp edged OR we can also sell you "P" material, which is angular, with sharp edges. "P" shaped media cannot be ordered online, you will need to call or email us for pricing.
- Type: Granular or powdery depending on grade
- Specific Gravity: 3.2 (SiC)
- Bulk Density: ANSI B74.12-1988
Wholesale packaging = 200-300lb drums depending on grit size (50 lb bags also available in come cases).
Contact us for wholesale pricing on drum orders.
