Description
Black Silicon Carbide Powder #400 is a premium-grade silicon carbide micropowder manufactured from high-purity petroleum coke and silica sand through high-temperature electric resistance furnace smelting, followed by crushing, milling, and precision particle classification.
Featuring excellent hardness, sharp angular particles, and highly consistent particle size distribution, Black Silicon Carbide Powder #400 provides efficient cutting action while producing finer and more uniform surface finishes. Its refined particle size makes it suitable for applications requiring precise material removal and excellent surface quality.
Compared with Black Silicon Carbide Powder #240, #400 offers a finer particle distribution, resulting in improved surface smoothness and greater processing accuracy while maintaining excellent abrasive efficiency. It is widely used in precision grinding, lapping, polishing, ceramic processing, optical glass, stone finishing, refractory materials, and other industrial applications.
With outstanding wear resistance, thermal stability, and reliable performance, Black Silicon Carbide Powder #400 is an ideal abrasive material for manufacturers seeking consistent micropowder quality for precision finishing and advanced industrial processing.
Key Features
High Hardness
Mohs hardness up to 9.2, providing excellent cutting ability
and abrasive efficiency.
Excellent Grinding Performance
Sharp silicon carbide crystals provide fast material removal
and precision processing capability.
Stable Physical Properties
Maintains reliable performance under high temperature,
wear and demanding industrial conditions.
Wide Industrial Applications
Suitable for precision lapping, polishing, ceramics and
advanced material processing.
Available Sizes
- FEPA F Micro Grit: F240, F280, F320, F360, F400, F600, F800, F1000, F1200, F1500, F2000, F2500
- FEPA P Grit: P240, P360, P400, P800, P1000, P1200, P1500, P2000, P2500
- JIS Grit: #240, #320, #400, #600, #700, #800, #1000, #1200, #1500, #2000, #2500, #3000, #4000, #6000
- Micron Size: Custom particle sizes are available according to customer requirements for precision grinding, polishing, ceramic processing and advanced industrial applications.
Applications
Precision Lapping
Used for precision lapping and polishing of metals,
ceramics and advanced materials.
Surface Finishing
Suitable for fine grinding, polishing and surface treatment
applications.
Ceramics & Refractory Materials
Used for processing ceramics, cemented carbide and
high temperature materials.
Precision Abrasive Applications
Applied in fine abrasive tools and industrial precision
processing.
Technical Data
Physical Properties
| Item | Value |
|---|---|
| Appearance | Black Powder |
| 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 | F230–F280 (#240–#360) | ≥98.30 | ≤0.25 | ≤0.25 |
| F320–F500 (#400–#800) | ≥98.10 | ≤0.25 | ≤0.30 | |
| F600–F800 (#1000–#1500) | ≥97.80 | ≤0.25 | ≤0.30 | |
| F1000–F1200 (#2000–#2500) | ≥97.50 | ≤0.25 | ≤0.30 | |
| #3000–#6000 | ≥96.00 | ≤0.25 | ≤0.30 |
Particle Distribution (μm)
| Particle Size | D0 | D3 | D50 | D94 |
|---|---|---|---|---|
| #240 | ≤127 | ≤103 | 58.6±3.0 | ≥40.0 |
| #280 | ≤112 | ≤87.0 | 49.4±3.0 | ≥33.0 |
| #320 | ≤98.0 | ≤74.0 | 41.1±2.5 | ≥27.0 |
| #360 | ≤86.0 | ≤66.0 | 36.1±2.0 | ≥23.0 |
| #400 | ≤75.0 | ≤58.0 | 30.9±2.0 | ≥20.0 |
| #500 | ≤63.0 | ≤50.0 | 26.4±2.0 | ≥16.0 |
| #600 | ≤53.0 | ≤43.0 | 21.1±1.5 | ≥13.0 |
| #700 | ≤45.0 | ≤37.0 | 17.9±1.3 | ≥11.0 |
| #800 | ≤38.0 | ≤31.0 | 14.7±1.0 | ≥9.0 |
| #1000 | ≤32.0 | ≤27.0 | 11.9±1.0 | ≥7.0 |
| #1200 | ≤27.0 | ≤23.0 | 9.9±0.8 | ≥5.5 |
| #1500 | ≤23.0 | ≤20.0 | 8.4±0.6 | ≥4.5 |
| #2000 | ≤19.0 | ≤17.0 | 6.9±0.6 | ≥4.0 |
| #2500 | ≤16.0 | ≤14.0 | 5.6±0.5 | ≥3.0 |
| #3000 | ≤13.0 | ≤11.0 | 4.0±0.5 | ≥2.0 |
| #4000 | ≤11.0 | ≤8.0 | 3.0±0.4 | ≥1.3 |
| #6000 | ≤8.0 | ≤5.0 | 2.0±0.4 | ≥0.8 |
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