Green Silicon Carbide is produced in an electric resistance furnace from quartz sand, petroleum coke and salt at high temperature. It is semi-transparent in green color with friability, high purity and high hardness. It is suited for grinding hard, brittle and non-metallic such as cemented carbides, optical glass, ceramics, etc.
Chemical & Physical Properties
Crystal Form Alpha SiC hexagonal system
Chemical nature Slight acid
Reaction with acids Very slight surface action with hydrofluoric acid View full description
Green Silicon Carbide is produced in an electric resistance furnace from quartz sand, petroleum coke and salt at high temperature. It is semi-transparent in green color with friability, high purity and high hardness. It is suited for grinding hard, brittle and non-metallic such as cemented carbides, optical glass, ceramics, etc.
Chemical & Physical Properties
Crystal Form Alpha SiC hexagonal system
Chemical nature Slight acid
Reaction with acids Very slight surface action with hydrofluoric acid
Reaction with Alkalis Attacked at high temperature by alkalis and iron oxide
Oxidation-reduction effects Starts to oxide slowly at 800°C. No reduction
True Density (g/cm3) 3.20
Hardness Knoop (kg/cm2) 2500-2900
Mohs 9.5
Color Green
Color after firing Green
Decomposition point 2300oC
Max Usable temperature 1540oC in air
Specific heat (cal/g.oC ) 0oC 500oC 1000oC
0.14 0.28 0.13
Coefficient of thermal conductivity (cal/cm2.sec.oC ) 600oC 800oC 1000oC
0.080 0.061 0.051
Electrical resistivity(Wcm) 25oC 100oC 400oC 800oC 1400oC
50 46.4 26.6 7.8 0.65
Coefficient of liner expansion (x10-6) 25oC -500oC 25oC -1000oC 25oC -1500oC 25oC-2000oC 25oC-2500oC
4.63 5.12 5.48 5.77 5.94
SiC 99.0 min 98.0 min 97.5 min 97.0 min 95.5 min 94.0 min
F.C 0.20 max 0.25 max 0.25 max 0.30 max 0.30 max 0.50 max
Fe2O3 0.20 max 0.50 max 0.70 max 0.70 max 0.70 max 0.70 max
Magnetic Material Content (% by weight) Grit Magnetic material Content
16#-30# <0.0180
36#-60# <0.0150
70#-120# <0.0120
150#-220# <0.0100
Available Sizes
10-F220, F230-1200,W63-W5,JIS240-JIS3000.
Other sizes can be also available according to customers requirements
Applications Grinding wheels Electrical
Coated tools Heating elements
Polishing Ceramic
Lapping Refractory
Packing 25 kgs or 50 kgs packed in three layers bags, or can be packed on request.
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Black Silicon Carbide is produced in an electric resistance furnace from quartz sand and petroleum coke or anthracite at high temperature. The hardness and sharp particle shape of this material make it suitable for manufacturing of grinding wheels, coated products, wire saws, superior refractory materials and deoxideiser as well as for lapping, polishing and blasting.
Chemical & Physical Properties
Crystal Form Alpha SiC hexagonal system
Chemical nature Slight acid
Reaction with acids Very slight surface action with hydrofluoric acid
Reaction with Alkalis Attacked at high temperature by alkalis and iron oxide
Oxidation-reduction effects Starts to oxide slowly at 800oC. No reduction
True Density (g/cm3) 3.20
Hardness Knoop
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