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Quatz Tubes

QUARTZ TUBES FOR RESISTORS | INFRARED LAMPS | INFRARED HEATER | TOASTERS

 


Clear Quartz Tubes

 

Clear quartz tubes are made of high-purity fused quartz (SiO₂ ≥ 99.9%), offering an infrared radiation transmission of over 90%.

Their completely transparent and smooth structure allows for excellent thermal and optical efficiency, so they are widely used in infrared lamps, electric heating systems, toasters, industrial ovens, and optical sensing devices.

These tubes are highly resistant to thermal shock, withstand extreme temperatures, and feature high chemical and dielectric stability, ensuring reliable and long-lasting performance even in demanding environments.

 

 

Opaque | Satin | Translucent  Quartz Tubes

 

Opaque or translucent quartz tubes are made of sintered or milky quartz, providing an even diffusion of heat and radiation.

Thanks to their micro-porous structure, these tubes reduce the direct emission of visible radiation, improving thermal distribution and protecting the heating elements.

They are particularly suitable for electric heating elements, toasters and industrial ovens, where thermal homogeneity and resistance to thermal shock are required.

Its white or semi-transparent appearance also provides additional thermal insulation and protection against oxidation of the internal elements.



Technical Parameters of Quartz Tubes 

 

Mechanical properties

Standard value

Thermal and Optical Properties

Standard value

Density

2.2 g/cm³

Crumple Point

1280°C

Compressive Strength

1100 Mpa

Softening Point

1780°C

Flexural Strength

67 Mpa

Annealing Point

1250°C

Tensile strength

48 Mpa

Specific heat (20-350°C)

670 J/(kg·°C)

Poisson coefficient

0.14-0.17

Thermal conductivity (20°C)

1.4 W/(m·°C)

Young's Module

72000 Mpa

Refractive Index

1.4585

Stiffness Modulus

31000 Mpa

Coefficient of thermal expansion

5.5×10-7

5.5×10−7

cm/(cm·°C)

Mohs Hardness

5.5-6.5

Hot working temperature

1750-2050°C

Short-term use temperature

1300°C

Long-term use temperature

1100°C

 

 

Electrical properties

Standard value

Resistivity

7×107

7×107

Ω·cm

Dielectric Strength

250-400 kV/cm

Dielectric Constant

3.7-3.9

Dielectric Absorption Factor

<4×104

<4×104

Dielectric Loss Factor

 


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