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Silicon carbideSilicon carbide (sic) is produced in an electric furnace at temperatures in excess of 2200? C. sic is produced by fusing coke and high purity silica sand. The result is the formation of sic crystals which are very hard. Sic also has a very high thermal conductivity and is very strong at elevated temperatures.Sic is used in a variety of industries including bonded abrasives (grinding wheels) , coated abrasives (sandpaper and cloth) , wire sawing granite, blasting grain, polishing compounds, refractories, structural ceramics, heating elements, and other applications.Typical chemical analysisAlpha silicon carbide which crystallizes as modifications of the hexagonal system.Sic 98. 5%Sio2 0. 5%SI 0. 3%Fe 0. 08%Al 0. 1%C 0. 3%Ball mill toughness: on crude sic, 55 minimum. Finished product is much higher but not tested on a routine basis.Particle shape: blocky, Sharp.Available sizesANSI / ISO grits: # 8, 10, 12, 14, 16, 20, 22, 24, 30, 36, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220, 240, 280, 3f-fine.Also fepa / ISO in above sizes.Fepa-f grits (water classified) : f320, 360, 400, 500, 600, 800, 1000, 1200, 1200 and finer, 2. 5 micron.1 and sub-micron under development. 1f, 2f, 3f, 4f, 800 / f, 800 / 1000.JIS grits (water classified) : # 360, 400, 500, 600, 800, 1000, 1200, 1500, 2000, 2500, 3000, 4000. 6000 under development.# 1 refractory & abrasive splits: (suitable for bonded abrasives, refractories, etc.) 4 / 10, 4 / 8, 6 / 8, 8 / 16, 10 / 16, 16 / 35, 30 / 50, 50 / 100, 35 / 70, 100f, and custom sizes. Lapidary splits 46 / 70, 60 / 90, 100 / 120, 120 / 220# 1 refractory: run-of-mill 6 / f, 8f, etc. plus above splits (low fe2o3 (typ. 0. 1)Dust collector fines cr, ct, ctc fines, 270 / f washed.# 1 refractory: pan milled 4 / 8, 6 / 8, 8 / 16, 16 / 35, 35 / 70, 80 / f.Typical chemical analysisTotal sic 99. 5%Total sio2 0. 2%Total SI 0. 03%Total fe 0. 04%Total c 0. 1%Grit sizes availableANSI / ISO grits# 14, 16, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220, 240Fepa grits( water classified) f 320, 360, 400, 500, 600, 800, 1000, 1200, 1500, 2. 5 micronSubmicron under development.JIS grits( water classified) # 360, 400, 500, 600, 800, 1000, 1200, 1500, 2000, 2500, 3000, 4000, 6000 under development.Splits and custom sizes are available on request.
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