Green Silicon Carbide also known as Green Carborundum is an extremely hard (Knoop 2600 or Mohs 9.2, microhardness 2940-3320) man made mineral that possesses high thermal conductivity (100 W/m-K). It also has high strength at elevated temperatures (at 1000°C, Green SiC is 7.5 times stronger than Al2O3). Among abrasives, silicon carbide’s hardness is higher than corundum, and ranked below diamond, cubic boron nitride and boron carbide. Density generally viewed is 3.20-3.25g/cm3, bulk density is 1.2-1.6g/cm3.
Green Silicon Carbide is an entirely new batch composition made from silica sand and petroleum coke, appended with salt, then smelted in electric arc furnace, and is extremely pure. It can be manufactured in many complex bonded shapes, which are utilized for super refractory purposes. Green silicon carbide is also ideal for a wide variety of abrasive applications.
▼Usage:
●The main use of grit size sand
As the abrasive, it is suitable for grinding carbide, hard and brittle metal and non-metallic materials, e.g. copper, brass, aluminum and magnesium metals, gems, optical glass, ceramics and other non-metallic materials.
Mainly used for glass polishing, crystal grinding, solar and semiconductor wafer wire sawing, ceramic polishing, as well as precision grinding wheel manufacturing, plastic products, etc.
●The use of green silicon carbide powder
Polish machine parts, metal products, cylinder, piston ring, pump, nozzles, bearings, roller ball and precision measuring instruments and polishing glass lenses, prisms, flat polished crystal and other products.
Silicon carbide powder is also widely used in refractory, wear-resistant floors, ceramic foam, special coatings, corrosion-resistant paint, flow separation and environmental protection industries.
▼Chemical Analysis
|
Purpose |
Specification |
Chemical Composition (%) |
Magnetic material content(%)max |
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|
Abrasives grade |
SIC min |
F.C max |
Fe2O3 max |
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|
F |
12-80 |
99 |
0.20 |
0.2 |
0.0180 |
|
|
90-150 |
98.5 |
0.25 |
0.5 |
0.0150 |
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|
180-220 |
97.5 |
0.25 |
0.7 |
0.0120 |
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|
240-1200 |
96 |
0.30 |
0.8 |
— |
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|
Refractory grade |
Section sand |
0-1mm 1-3mm 3-5mm 5-8mm |
99 |
0.35 |
0.7 |
— |
|
Fine Powder |
-180mesh -200mesh -240mesh -320mesh |
98 |
0.35 |
0.7 |
— |
|
▼Physical Properties
|
Crystal Form |
Alpha SiC hexagonal system |
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Chemical nature |
Slight acid |
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Reaction with acids |
Very slight surface action with hydrofluoric acid |
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Reaction with Alkalis |
Attacked at high temperature by alkalis and iron oxide |
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Oxidation-reduction effects |
Starts to oxide slowly at 800°C. No reduction |
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True Density (g/cm3) |
3.20-3.25 |
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Hardness |
Knoop (kg/cm2) |
2500-2900 |
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Moh’s |
9.2 |
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Color |
Green |
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Color after firing |
Green |
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Decomposition point |
2600°C |
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Max Usable temperature |
1900°C in air |
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Specific heat (cal/g.oC ) |
0°C |
500°C |
1000°C |
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|
0.14 |
0.28 |
0.13 |
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Coefficient of thermal conductivity (cal/cm2.sec.oC) |
600°C |
800oC |
1000°C |
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|
0.080 |
0.061 |
0.051 |
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Electrical resistivity(Wcm) |
25°C |
100°C |
400°C |
800°C |
1400°C |
|
|
50 |
46.4 |
26.6 |
7.8 |
0.65 |
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|
Coefficient of liner expansion (x10-6) |
25°C -500°C |
25°C -1000°C |
25°C-1500°C |
25°C-2000°C |
25°C-2500°C |
|
|
4.63 |
5.12 |
5.48 |
5.77 |
5.94 |
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All data based upon Runlong Enterprise standard test methods. We could supply grit size according to FEPA, JIS, ANSI, GB & P Standard.
Good quality green silicon carbide for making bonded abrasives and coated abrasives with unit price [USD1350~2900/Ton FOB Tianjin] from China manufacturer.
▼Shipping Package
|
pvc bags |
paper bags |
jumbo bags |
jumbo bags |
pvc bag+pallet |
paper |
|
25kg net |
25kg net |
1000kg |
1500kg |
1000kg |
1000kg |
Other package also could be supplied as required.
▼Our Advantages:
a. Assure the high quality of products.
b. Equipped full line of test method. The laboratory is certified by government Inspection Bureau, that assures its quality stability.
c. All products will be supplied according to customers different requirements.
d. One-stop service
e. A grade products with high purity
f. Professional abrasives manufacturer since 1999
g. Production capacity:1000-1500 metric ton/month
▼Payment:
1).Our first choice is T/T. For a large order 40% T/T in advance is earnest money, the rest to be paid in 7-10 days after getting B/L copy. For a small order,100% T/T in advance.
2).Second choice is L/C. We can accept irrevocable L/C at sight. For a large order 40%T/T, 60%L/C. We couldn’t accept L/C for a small order. The best way of payment we advise is T/T, because L/C is very complicated and a lot of extra fee to give the bank.
3).The others: West Union, Paypal.
▼After Sales Service:
1).We are very glad that customer give us some suggestion for price and products.
2).If any question, please let us know it by E-mail or Telephone at the first time. We can deal with them for you in time.
▼Factory Visit:
1).Welcome any customer to visit our factory directly
2).If customer have any scheduling in China, please let us know. We would like to help you book the hotel and pick up you from airport or railway station.
