Description
Black Silicon Carbide #70 Grit is a fine-grade silicon carbide abrasive material manufactured from high-purity petroleum coke and silica sand through high-temperature electric furnace smelting, crushing, and precise particle classification processes.
With high hardness, sharp cutting edges, and excellent abrasive stability, Black Silicon Carbide #70 Grit provides reliable cutting performance while producing a smoother and more uniform surface finish. Its refined particle size allows better control during processing, making it suitable for applications requiring improved surface quality and consistent grinding results.
Compared with #60 Black Silicon Carbide Grit, #70 Black Silicon Carbide Grit features a finer grain structure that offers enhanced finishing performance and improved surface refinement while maintaining effective material removal capability. It is widely used for precision grinding, fine abrasive blasting, coated abrasives, bonded abrasive tools, ceramic processing, stone finishing, refractory products, and industrial surface treatment.
Due to its excellent hardness, thermal stability, and consistent grain distribution, Black Silicon Carbide #70 Grit is an ideal abrasive solution for manufacturers requiring fine grinding and high-quality surface finishing performance.
Key Features
High Hardness
Mohs hardness up to 9.2, providing excellent cutting ability, wear resistance and grinding efficiency.
High Abrasive Performance
Sharp crystal structure enables fast material removal and excellent grinding performance.
Good Thermal Stability
Maintains stable abrasive performance under high temperature working conditions.
Wide Application Range
Suitable for blasting, grinding, refractory and industrial surface treatment applications.
Available Sizes
- JIS Grit:#14, #16, #22, #24, #30, #36, #40, #46, #60, #70, #80, #90, #100, #120, #150, #180, #220, #240
- FEPA F Grit:F12, F14, F16, F20, F22, F24, F30, F36, F40, F46, F54, F60, F70, F80, F90, F100, F120, F150, F180, F220
- Customized Sizes:Customized particle sizes are available according to customer requirements for precision grinding, polishing and advanced industrial applications.
Applications
Abrasive Blasting
Used for surface cleaning, rust removal and preparation of metal, stone and other materials.
Grinding Wheels
Suitable for bonded abrasives, grinding tools and general abrasive applications.
Refractory Materials
Applied in refractory products due to excellent thermal stability and wear resistance.
Ceramics & Advanced Materials
Used for grinding ceramics, cemented carbide and engineering materials.
Technical Data
Physical Properties
| Item | Value |
|---|---|
| Appearance | Black Granular |
| Mohs Hardness | 9.2 |
| Bulk Density | 1.45–1.56 g/cm³ |
| True Density | 3.12 g/cm³ |
| Melting Point | 2250°C |
| Crystal Structure | Hexagonal |
| CAS No. | 409-21-2 |
| HS Code | 2849200000 |
Chemical Composition (%)
| Model | Particle Size | SiC | F.C. | Fe₂O₃ |
|---|---|---|---|---|
| C | F4–F90 | ≥98.80 | ≤0.15 | ≤0.15 |
| F100–F150 | ≥98.50 | ≤0.20 | ≤0.20 | |
| F180–F220 | ≥98.30 | ≤0.25 | ≤0.25 |
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