Green silicon carbide is used to grind hard and brittle metal, non-ferrous metals like copper, brass, aluminum and magnesium, and non-metallic materials such as gem, optical glass, ceramics, etc.
Green silicon carbide (GC) is produced by petroleum coke, quality silicon sand and appended with salt in an electric arc furnace at high temperatures. The hardness is higher than synthetic corundum, but lower than diamond. Mechanical strength is higher than corundum. The materials are used to grind hard and brittle metal, non-ferrous metals like copper, brass, aluminum and magnesium, and non-metallic materials such as gem, optical glass, ceramics, etc.
| Grain Usages and Types | ||
| Usage | For bonded abrasives | For coated abrasives |
| Type | GC | GC-P |
| Physical Characteristics | |||||
| Item | Basic mineral | Crystal system | Crystal color | Mohs hardness | Density |
| Green silicon carbide | α- SiC | Hexagonal | Green | 9.15 | ≥3.18g/cm3 |
| Item | Micro hardness | Electrical resistivity | Grinding ability (compared with diamond as one) | Linear expansion coefficient (when 900℃ α•10-6k-1) | |
| Green silicon carbide | HV3280-3400 | 3×105-3×107Ω•cm | 0.28 | 4.6 | |
| Chemical Composition (GB/T 2480-2008) | ||||
| Type | Grit | Chemical composition（%，by weight） | ||
| SiC | F.C | Fe2O3 | ||
| GC | F4-F90 | ≥99.10 | ≤0.20 | ≤0.20 |
| F100-F150 | ≥98.60 | ≤0.25 | ≤0.45 | |
| F180-F220 | ≥98.00 | ≤0.25 | ≤0.50 | |
| F230-F280 | ≥98.00 | ≤0.30 | ≤0.50 | |
| F320-F500 | ≥97.50 | ≤0.30 | ≤0.50 | |
| F600-F800 | ≥97.00 | ≤0.35 | ≤0.50 | |
| F1000-F1200 | ≥96.50 | ≤0.40 | ≤0.50 | |
| GC-P | P12-P100 | ≥99.10 | ≤0.20 | ≤0.20 |
| P120-P150 | ≥98.60 | ≤0.25 | ≤0.45 | |
| P180-P220 | ≥98.00 | ≤0.25 | ≤0.50 | |
| P240-P360 | ≥98.00 | ≤0.30 | ≤0.50 | |
| P400-P1000 | ≥97.50 | ≤0.30 | ≤0.50 | |
| P1200-P1500 | ≥97.00 | ≤0.35 | ≤0.50 | |
| P2000-P2500 | ≥96.50 | ≤0.40 | ≤0.50 | |
| Note: Special requirement on chemical composition can be satisfied through discussion. | ||||
| Optional Particle Sizes |
| F4-F220, F240-F1200, P12-P220, P240-P2500, JIS240#-4000# etc. |
| Note: Special specification can be customized according to customer's requirements. |
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