SiC Powders are specifically manufactured to be used for general abrasive applications in bonded abrasive tools, lapping and polishing processes. With a lower hardness and abrasive capacity than diamond or boron carbide, it is widely used for grinding nonferrous materials, finishing tough and hard materials, as well as filling up ceramic parts due to its lower cost.
Sizes Available: Grit sizes range from coarse grades down to a 1500 mesh size.
Note: We do not sell silicon carbide disks or forms other than the actual loose sandblasting abrasive grits and powders.
Technical data
| Application | Grade | Grit Size |
SIC mass % - min. |
Fe(Iron) mass % - max |
C(Carbon) mass % -max |
Magnetic admixture mass %- max |
|---|---|---|---|---|---|---|
| Abrasive | AG | F12-F20 | AG | 0.3 | 0.3 | 0.13 |
|
|
F24-F90 | 98.0 | 0.3 | 0.3 | 0.2 | |
| F100-F120 | 97.0 | 0.4 | 0.4 | 0.2 | ||
| F150-F180 | 98.0 | 0.5 | 0.4 | 0.2 | ||
| F230-F280 | 98.0 | 0.4 | 0.4 | 0.2 | ||
| F320-F600 | 98.0 | 0.5 | 0.5 | 0.2 | ||
| F800-F1000 | 95.0 | 0.7 | 0.6 | 0.2 | ||
| F1200 | 92.0 | 0.9 | 0.7 | 0.2 | ||
| Application | Grade | Grit Size |
SIC mass %- min. |
Free C (Carbon) mass % mass % -range |
Total C (Carbon) mass % - range |
S (Sulfur) mass % - range |
moisture mass % - range |
|---|---|---|---|---|---|---|---|
| Metallurgical | MG | 0-20mm | 88-92 | 3-6 | 30-33 | 0.1-0.2 | 1-3 |
| Structure | : | Monocrystalline | |
| Particle shape | : | Blocky, sharp edged | |
| Color | : | Black | |
| Friability | : | Semi-friable | |
| Knoop hardness (100 scale) | : | 2480 | |
| Bulk density | : | ANSI B74.12-1988 | |
| Specific gravity | : | 3.20 |
Particle size distribution for available grits.
Grading: FEPA Standard
| Grit size |
3% max., larger than, um |
50% min., in size range, um |
94% min., larger than, um |
Grit size |
3% max., larger than, um |
50% min., in size range, um |
94% min., larger than, um |
|---|---|---|---|---|---|---|---|
| F12 | 2000 | N/A | 1400 | F120 | 125 | N/A | 90 |
| F14 | 1700 | N/A | 1180 | F150 | 106 | N/A | 63 |
| F16 | 1400 | N/A | 1000 | F180 | 90 | N/A | 53 |
| F20 | 1180 | N/A | 850 | F220 | 75 | 50.0-56.0 | 45 |
| F24 | 850 | N/A | 600 | F240 | 70 | 42.5-46.5 | 28 |
| F30 | 710 | N/A | 500 | F280 | 59 | 35.0-38.0 | 22 |
| F36 | 600 | N/A | 425 | F320 | 49 | 27.7-30.7 | 16.5 |
| F40 | 500 | N/A | 355 | F360 | 40 | 21.3-24.3 | 12 |
| F46 | 425 | N/A | 300 | F400 | 32 | 16.3-18.3 | 8 |
| F54 | 355 | N/A | 250 | F500 | 25 | 11.8-13.8 | 5 |
| F60 | 300 | N/A | 212 | F600 | 19 | 8.3-10.3 | 3 |
| F70 | 250 | N/A | 180 | F800 | 14 | 5.5-7.5 | 2 |
| F80 | 212 | N/A | 150 | F1000 | 10 | 3.7-5.3 | 1 |
| F90 | 180 | N/A | 125 | F1200 | 7 | 2.5-3.5 | 1 |
| F100 | 150 | N/A | 106 | ||||
Green Vs Black - What's the difference?
Black SiC is a man made mineral with a high thermal conductivity rating of 100 W/m-K. It is extremely hard, around a Mohs 9.1 or 2550 Knoop. It has high strength at elevated temperatures. For example, at 1000oC, SiC is 7.5 times stronger than Al203 (aluminum oxide). Black SiC will contain some free silicon and carbon and thus is not as pure as green SiC. Black will range in purity from 97-99% pure, depending on grit size. Green SiC is made from Silica sand and coke, and is extremely pure. Hexagonally shaped, it breaks into very sharp particles. Our green SiC is 99.5% pure, exceeding JIS, ISO, & FEPA standards.
Green SiC is harder than black, coming in at a 9.4 Mohs and 2600 on the Knoop scale. Green is often the media of choice when it comes wire sawing. The micronization process of manufacturing our green SiC is controlled by a computer. Then the material is water classified/separated - this produces a very tight particle size distribution, as well as a reduction in fines, as preferred for accurate wire sawing applications. Unless your application requires an extremely pure SiC, by default, black is preferred due to its more economic pricing.
