Silica Sand / FOUNDRY
Foundry Silica Sand
High purity silica sand used for mold and core making in the foundry industry. Superior refractory properties with 98%+ SiO₂ content.
Technical Specifications
Purity
SiO₂ ≥ 98%
AFS Grain Sizes
AFS 30-35, 40-45, 50-55, 60-70
Packaging
25 kg bag / Big-bag (1000 kg)
Origin
Turkey (Bilecik, Sile)
Key Features
- High SiO₂ purity (98%+)
- Low thermal expansion
- Provides good surface finish
- High refractoriness (1700°C+)
- Regular grain shape (round-angular)
- Low clay and dust content
Applications
- Green sand molding
- Resin bonded (shell molding)
- Cold box core production
- Hot box core production
- Investment casting
- Steel casting molds
Dimension Table
| AFS Grain Number | Mesh Size | SiO₂ (%) | Application |
|---|---|---|---|
| 30-35 | 20-40 mesh | ≥98 | Heavy casting, steel casting |
| 40-45 | 30-50 mesh | ≥98 | General casting, iron casting |
| 50-55 | 40-70 mesh | ≥98 | Medium-fine casting, aluminum casting |
| 60-70 | 50-100 mesh | ≥98 | Fine casting, core production |
Technical Notes
- 01Lower AFS number means larger grain size.
- 02AFS 30-45 range preferred for steel casting.
- 03AFS 50-70 range is ideal for aluminum casting.
- 04Moisture content should be kept below 0.3%.
- 05Clay content adjusted to 8-12% for green sand molding.