Fused Silica Blocks
Large fused silica blocks that molten metals do not wet, from which any part can be machined.
Service temperature
1300–1500 °C
Related sectors
About this product
Supplied as blocks, fused silica is the starting material for hardware in both the glass and the foundry industry. Since molten aluminium and zinc do not stick to its surface, contact parts such as launders, filters and distributors are machined from it. Blocks are worked to the required geometry in our cutting shop, and our large-size stock keeps lead times short.
Material
Fused silica is produced by melting high-purity quartz and letting it solidify in an amorphous state. Its coefficient of thermal expansion is close to zero, so it does not crack under rapid heating or cooling — which makes it ideal for suspended roof blocks, crown components and any part exposed to frequent thermal cycling. Its non-wetting behaviour against molten aluminium and zinc has also made it common in foundries.
Applications
- Hardware and special part fabrication
- Aluminium transfer launders
- Glass furnace suspension and cover parts
Technical data
- SiO₂ content
- > 99%
- Service temperature
- 1300 – 1500 °C
- Thermal expansion
- ≈ 0.5 × 10⁻⁶ /K
Values are typical ranges for the material family; a batch-specific analysis certificate can be requested.
Ask for a price
Send the size, quantity and delivery point and we will confirm price and lead time the same day.
