Complaint
Silicon carbide is an inorganic substance with a chemical formula of SiC. It is made by high temperature smelting of raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt is needed to produce green silicon carbide) through a resistance furnace. Silicon carbide also exists in nature, a rare mineral, moissanite. Among the non-oxide high-tech refractory materials such as C, N, and B, silicon carbide is the most widely used and most economical one.
Green silicon carbide is made from petroleum coke and high-quality silica as the main raw material, adding salt as an additive, and smelted at high temperature in a resistance furnace. Its hardness is between corundum and diamond, and its mechanical strength is higher than that of corundum.
Black Silicon Carbide is produced at high temperature in an electric resistance type furnace with quartz sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synthetic diamond. The mechanical intensity of it is higher than that of fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. Black silicon carbide is suitable for grinding cast iron, non-ferrous metal, leather, rubber, wood, rock, it also be used as high grade refractory material.
| Grit | SiC | F.C. | Fe2O3 |
| F12-F90 | 98.50Min | 0.20Max | 0.60Max |
| F100-F150 | 98.00Min | 0.30Max | 0.80Max |
| F180-F220 | 97.00Min | 0.30Max | 1.20Max |
| F230-F400 | 96.00Min | 0.40Max | 1.20Max |
| F500-F800 | 95.00Min | 0.40Max | 1.20Max |
| F1000-F1200 | 93.00Min | 0.50Max | 1.20Max |
| P12-P90 | 98.50Min | 0.20Max | 0.60Max |
| P100-P150 | 98.00Min | 0.30Max | 0.80Max |
| P180-P220 | 97.00Min | 0.30Max | 1.20Max |
| P230-P500 | 96.00Min | 0.40Max | 1.20Max |
| P600-P1500 | 95.00Min | 0.40Max | 1.20Max |
| P2000-P2500 | 93.00Min | 0.50Max | 1.20Max |
| Item | Black silicon carbide | Green silicon carbide |
| Basic mineral | α-SIC | α-SIC |
| Crystal system | hexagonal | hexahonal |
| Crystal color | Black | Green |
| Density | ≥3.12g/cm3 | ≥3.18g/cm3 |
| Mohs hardness | 9.15 | 9.15 |
| Micro hardness | HV3100-3280 | HV3200-3400 |
| Grinding ability(compared with diamond as one) | 0.25 | 0.28 |
| Liner expansion coefficient when 900ºC.α·10-6k-1 | 4.4 | 4.6 |
| Electrical resistivity | 3×105-3×107Ω.cm | 3×105-3×107Ω.cm |
Q1:Are you a factory? Where are you located?
A: We are a professional manufacturer with more than 20 years production experience of composite materials, Our own factory locate in shijiazhuang city, hebei province.
Q2:What's the MOQ?
A: Usually 1 Ton, depend on what products you need.
Q3:Package & Shipping.
A: Normal package:by carton, we accept OEM packing.
Q4:When can I offer?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price pls call us or tell us in your email , so that we can reply you priority.
Q5:How do you charge the sample fees?
A: If you need a samples from our stock, we can provide to you for free, but the free charge should be on your side. If you need a special size, We will charge the sample making fee which will be refund when you place an order.
Q6:What's your delivery time for production?
A:If we have stock , can delivery in 1-7 days ; if without the stock, need 5-30 days, depend on quantity.
