Black Silicon Carbide Abrasive Grains
Black Silicon Carbide Abrasive Grains are sharp, angular black crystalline particles with a slight metallic luster, produced by smelting quartz sand and petroleum coke at high temperature in an electric resistance furnace. With a Mohs hardness of about 9.2, second only to diamond and boron carbide, and excellent cutting ability, thermal stability and chemical inertness, this material is widely used in the photonics and optics industry for grinding, lapping and polishing of optical glass, lenses, prisms, crystals and semiconductor wafers, as well as for manufacturing bonded and coated abrasive tools.
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Overview
Specifications
| Parameter | Value |
|---|---|
| SiC Content | ≥98.5% |
| Free Carbon (F.C) Content | ≤0.2% |
| Fe2O3 Content | ≤0.15% |
| Magnetic Material Content | ≤0.02% |
| Mohs Hardness | 9.2 |
| Knoop Hardness | 2500-2800kg/mm² |
| True Density | 3.20-3.25g/cm³ |
| Bulk Density | 1.20-1.60g/cm³ |
| Melting Point | ≥2600°C |
| Thermal Conductivity | 100-150W/(m·K) |
| Linear Expansion Coefficient | 4.0-5.0×10⁻⁶/K |
| Grit Size Range (Coarse Grinding) | F8-F220 |
| Grit Size Range (Fine Grinding & Polishing) | F230-F1200 |
| Color | Black |
| Crystal Structure | α-SiC (Hexagonal) |
| Grain Shape | Angular, sharp-edged |
Applications
Key Features
Datasheet
Supplier Information
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