Black Silicon Carbide
Cost-effective sharpness for cast iron, non-ferrous metals, and stone polishing.
- High hardness (9.3 Mohs) with excellent cutting efficiency
- Cost-effective SiC grade for general abrasive applications
- Good thermal conductivity and chemical resistance
- Versatile — suitable for blasting, grinding, and refractory use
Overview
Black Silicon Carbide (BSiC) is produced by fusing quartz sand and petroleum coke in a resistance-type electric furnace. With an SiC content of 98.5 % or higher, it offers an excellent balance of hardness, toughness, and cost-effectiveness.
Black SiC is widely used across the abrasives, refractories, and metallurgical industries. Its sharp, angular grains provide efficient material removal, while its thermal conductivity and chemical inertness make it suitable for demanding high-temperature environments.
YUMO produces Black SiC in FEPA macro-grit (F12–F220) and micro-powder (F230–F1200) ranges, with strict quality control at every stage of production.
Chemical Composition
| Component | Typical | Max |
|---|---|---|
| SiC | ≥ 98.50% | – |
| Fe₂O₃ | ≤ 0.20% | 0.30% |
| F.C | ≤ 0.20% | 0.30% |
| SiO₂ | ≤ 0.50% | – |
| Moisture | ≤ 0.10% | – |
Physical Properties
| Property | Value |
|---|---|
| Mohs Hardness | 9.3 |
| Knoop Hardness | 2,400–2,500 kg/mm² |
| Bulk Density | 1.2–1.5 g/cm³ |
| True Density | 3.20 g/cm³ |
| Crystal Form | α-SiC (hexagonal) |
| Melting Point | 2,700 °C (decomposes) |
| Color | Black / Iridescent |
Size / Grit Specification
| Grit | Main Size Range |
|---|---|
| F12 | 2,000–1,700 μm |
| F24 | 850–710 μm |
| F46 | 425–355 μm |
| F60 | 300–250 μm |
| F80 | 212–180 μm |
| F120 | 125–106 μm |
| F220 | 75–63 μm |
| F320 | d50 = 29.2 ± 1.5 μm |
| F500 | d50 = 12.8 ± 1.0 μm |
| F800 | d50 = 6.5 ± 0.8 μm |
| F1200 | d50 = 3.0 ± 0.5 μm |
Applications
Packaging & Shipping
- 25 kg woven PP bag with inner PE liner
- 1,000 kg (1 MT) jumbo bag, palletized
- Custom packaging and private labeling available
- Standard export palletizing with shrink-wrap
FAQ
What is the main advantage of Black SiC over fused alumina?
Black SiC is harder (9.3 vs 9.0 Mohs) and provides faster cutting rates, especially on non-ferrous metals, stone, glass, and ceramics.
Can Black SiC be used in metallurgy?
Yes. It is widely used as a deoxidizer and temperature modifier in iron and steel casting.
What grit sizes are available?
We supply the full FEPA range from F12 to F220 (macro) and F230 to F1200 (micro).
Is Black SiC suitable for wet blasting?
Absolutely. Its chemical inertness and toughness make it well-suited for both wet and dry blasting processes.
What is the minimum order quantity?
Standard MOQ is 1 MT. Smaller trial quantities are available for new customers.
Downloads
Technical data sheets and certificates are available upon request. Contact us.
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