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Formula: SiO₂
Form: Powder
Material: Quartz - Fused
Commodity: Ceramics
Quartz - Fused Powder is a high purity silica powder produced by melting high purity silica sand and allowing it to cool and solidify into glass. It’s characterized by high chemical purity, low thermal expansion and high resistance to thermal shock. With 31 variations available, our range of Quartz - Fused Powder caters to diverse applications, including optics, semiconductors, crucibles and laboratory ware. Its tightly controlled particle size distribution also makes it suitable as a filler for adhesives, plastics, rubbers and paints.
Tolerances
Powder
| Mean Particle Size | Nominal | |
|---|---|---|
| Minimum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Maximum Particle Size | Nominal | |
| Particle Size D10 | Nominal | |
| Particle Size D50 | Nominal | |
| Particle Size D90 | Nominal |
Material Properties for Ceramics
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alkalis | Fair |
| Halogens | Good |
| Metals | Fair |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant | 3.8 |
| Dielectric strength( kV mm⁻¹ ) | 25-40 |
| Volume resistivity( Ohmcm ) | 10¹⁸@25 |
Physical Properties
| Element | Value |
|---|---|
| Refractive index | 1.46 |
| Useful optical transmission range | 180-2500nm |
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 2.2 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1715 |
| Upper continuous use temperature( C ) | 1100-1400 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 670-740@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 1.46@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 0.54@20-1000 |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 72-74 |
| Hardness - Knoop( kgf mm⁻² ) | 820 |
| Hardness - Vickers( kgf mm⁻² ) | 1000 |
| Shear strength( MPa ) | 70 |
| Tensile strength( MPa ) | 48 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 1100 |