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Formula: SiO₂
Form: Tube
Material: Quartz - Fused
CAS Number: 14808-60-7
Commodity: Ceramics
Wall Thickness:
1mm
Inside Diameter:
10mm
Outside Diameter:
12mm
Length:
200mm
Quartz - Fused Closed One End Tubes are tubular glass products made from fused quartz, an extremely pure form of silica glass. With low thermal expansion and excellent resistance to thermal shock, fused quartz tubes are valued for their dimensional stability and ability to withstand rapid temperature changes. These transparent quartz tubes with one sealed end have applications in scientific research and industrial processes requiring containment and isolation of high temperature or corrosive environments. Goodfellow offers fused quartz closed one end tubes in a range of diameters and lengths to suit an array of experimental and manufacturing needs.
Tolerances
Tube
| Outside Diameter | =<2mm | ±10% |
|---|---|---|
| Outside Diameter | =<5mm | ±10% |
| Outside Diameter | >5mm | ±10% |
| Wall Thickness | ±20% |
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 |