What is Green Silicon Carbide?
Green Silicon Carbide is an extremely hard (Knoop 2600 or Mohs 9.4) man made mineral that possesses high thermal conductivity (100 W/m-K). lt also has high strength of elevated temperatures (at 1 OOO°C, Green SiC is 7.5 times stronger than Al203). Green SiC has a modulus of elasticity of 410 GPa, with no decrease in strength up to 1600°C, and it does not melt at normal pressures but instead dissociates of 2815.5°C. Green SiC is an entirely new batch composition made from Silica sand and coke, and is extremely pure. lt can be manufactured in many complex bonded shapes, which are utilized for superrefractory purposes. Green SC is also ideal for a wide variety of abrasive applications.
		Applications: Aerospace Blasting Coatings Composites Compounds Honing Stones Kiln Furniture Lapping Polishing Refractories Silicon, Quartz Vitrified and Resinoid Grinding Wheels Wire Sawing Silicon, Quartz

	Some APPLICATIONS for Silicon Carbide
1.	Wire sawing of Silicon Wafers - a single steel wire is wrapped around spools over 300 times to cut 300 wafers at once. Sizes used are JIS 600, JIS 800, JIS 1200, usually Green SIC at semiconductor makers. Each saw uses 300 - 600 lbs./day of silicon carbide.
2.	Gang sawing of Quartz Crystals - same idea except smaller saw using steel bands with oil/silicon carbide mix dripping into cut. Possibly 140 bands in blade pack cut quartz ingot into wafers. Use FEPA F 320, F 360, F 400 Black or Green SiC.
3.	Granite & Marble Polishing Bricks - a bonded brick made of silicon carbide with sodium silicate as binder. Can be pie shape or round with motor to grind like a grinding wheel. Use Black SiC mostly. Use many grit sizes from FEPA F 24 to F 1500.
4.	Fine Hones - Small companies make vitrified abrasive stones for honing inside of cylinders of engines with stones spring-loaded around spindle. Use Green SiC FEPA F 320 to F 1200 (JIS 320 to JIS 4000).
5.	Lapping Ferrites, ceramics, hardened steel - spitfire machine uses segmented cast iron bottom plate with parts (piston rings, seals, any small flat part) inside ring with abrasive/oil dripping onto moving plate. Uses FEPA F 240 to F 500 Black Silicon Carbide.
6.	Brake Uses a) Brake Pads - use F 1200-W Black SiC for wear resistant material mixed in with metal powder in brake pads. b) Disk Brake Rotors - Use FEPA F 500-W size to reinforce aluminium brake rotors. Increases strength and wear resistance by 10 times. Most is Black SiC with Green being developed. Some brake makers buy ingot with SiC already mixed in. grinding for many glass products
7.	Glass Grinding - Same type of machine as for lapping (see point 5.). Great glass producers use FEPA F 80, F 120, F 180, F 320, F 500 grit. Also for telescopes, mirrors, edge grinding, flat
8.	Copy Toner ingredient - FEPA F 1200 used to improve adhesion of carbon in copy toner. Good conductor of heat in toner.
9.	Lapidary - tumbling and lapping of semi-precious stones and gems like agates. 5 step process may start with FEPA F 80 and then, F 220, F 400, F 600, then finish with F 1000 Aluminium Oxide, then finally Cerium Oxide.
10.	Abrasive Foam Polishing Wheels - FEPA F 1200 Green SiC is typical size used to make foam wheels to polish computer hard discs before layer of magnetic iron oxide is added to aluminium. Same diameter as hard disc.
11.	Tumbling - SiC is put in a tumbler with water, brighteners, parts, and tumbled to remove burrs and improve finish. Small parts are good candidates for tumbling, such as bearings, needles, balls, etc.
12.	Metal Matrix Composites - Green Silicon Carbide and Black SiC sizes FEPA F 400 to F 1000 are put in aluminium ingot to reinforce it making it stronger than steel. Used in weight reduction applications in auto, aeroplane, bicycle, and many other applications.
13.	Ceramic Matrix Composites - Green SiC performs (could be any shape but open ended shallow boxes are typical) are infiltrated with molten aluminium to make a very light, strong, base for electrical components.
14.	Polyurethane, Resin Matrix Composites, Fillers - variety of uses in weather resistant coatings, heat conductive coatings on electrodes (boron carbide is even superior here) prevent spalling in steel mill electrodes, strengthening poly shapes, epoxy wear resistant filler for floor patch, lining pipes, etc. Also used in epoxy moulds for short runs is a much cheaper alternative to tempered steel
15.	Valve Lapping - Auto (rear drive) ring and pinion gears, and high pressure valve mating surfaces are run together in sets with oil and fine abrasive to make a perfect seal or reduce vibration (auto).
16.	Abrasion Resistant Filler in Diamond Wheels - small quantities of SiC sizes FEPA F 320 to F 1200 depending on diamond size are mixed with the matrix in diamond wheels to reduce the undercutting or erosion of bond so diamonds do not fall out of the wheels.
17.	High Temperature Cements - Refractory cements that call for fine SiC bonds use 1200/F (2 micron) as the ingredient. Some use FEPA F 400. Others use Washed Fines (similar to DCF) only washed to reduce the reactivity with acid binders used in steel mill formulas.

Physical & Chemical Composition Physical Properties
Hardness:	Knoop 2600 Mohs 9,4
Melting Point	4712°F (2600°C)
Thermal Conductivity*	210 btu/hr/ft²/in/°F of 400 °F 100 btu/hr/ft²/1 n/°F of 1600 °F
Specific Gravity	3.2 g/cc
Particle Shape	Blocky, Sharp
Color	Green
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