White Fused Alumina
Mirror polishing · >99% α-phase
Al₂O₃ 99.81% · Mohs hardness 9.0
GC
Green Silicon Carbide
Petroleum coke and high-purity silica reacted above 1800 °C in a resistance furnace. Harder than corundum and mechanically stronger, with high thermal conductivity and semiconducting behaviour — the standard choice for slicing and lapping hard, brittle materials.
SiC ≥99.0%Mohs hardness 9.5Density 3.20–3.25 g/cm³Grades GC800#–GC10000#
Specification
Chemistry and physical properties
Typical production values. Batch certificates are issued against your own specification on request.
| Constituent | Value (%) |
|---|---|
| SiC | ≥99.0 |
| Free carbon | 0.12 |
| Fe₂O₃ | 0.12 |
| Form | Range |
|---|---|
| Production grades | GC800# · GC1000# · GC1200# · GC1500# · GC2000# · GC2500# · GC3000# · GC4000# · GC6000# · GC8000# · GC10000# |
| Property | Value |
|---|---|
| Crystal form | Hexagonal |
| Colour | Green |
| Mohs hardness | 9.5 |
| Vickers microhardness | 3000–3300 kg/mm² |
| Knoop hardness | 2670–2815 kg/mm² |
| Microhardness | 3280–3400 kg/mm³ |
| Specific gravity | 3.20–3.25 |
| Bulk density | 1.2–1.6 g/cm³ |
| Ranking | Above corundum; behind diamond, cBN and boron carbide |
Applications
Where GC is used
- Slicing and lapping solar silicon wafers, semiconductor silicon wafers and quartz chips
- Polishing crystal and pure iron; precision polishing of special steels
- Bonded and coated abrasives, cutting discs, grinding wheels; free lapping and polishing
- Machining cemented carbide, glass, ceramics and non-metallic materials
- Lapping glass, stone, agate and high-grade jewellery and jade
- Advanced refractories, engineering ceramics, heating and thermal elements
- Silicon carbide heating rods and far-infrared source substrates
- Honing cylinder liners and fine grinding high-speed steel tooling
Gallery
Green Silicon Carbide in production
Also available
Other material families
Tabular Alumina
Scratch-free CMP · hexagonal platelets
Al₂O₃ 99.72% · Mohs hardness 9
Brown Fused Alumina
Tough workhorse · F4 – F320
Al₂O₃ 95.0–97.0% · Microhardness HV 1800–2200
Next step
Quote Green Silicon Carbide to your specification
Tell us the grading standard, particle size band, chemistry limits and monthly tonnage for your GC requirement and we will confirm the closest grade or quote a custom one.
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