Wholesale Heat Resistant Quartz Lamp Holder for Industrial Use Manufacturer, Products

Quartz lamp holders are made of high-purity quartz glass, which is resistant to high temperatures, has excellent insulation and light transmittance, and is compatible with light sources such as halogen lamps and infrared heating lamps. They can withstand high-temperature radiation and current surges, and are the core component of lighting and heating equipment, ensuring stable operation of the light source.

Quartz inner and outer lamp caps refer to the end components of quartz lamps, such as UV lamps, infrared lamps, and halogen lamps. They are used for electrical connection, sealing, and structural support.

Inner cap: connected to the internal electrode or light-emitting structure

Outer cap: external part used for electrical connection and mounting

Product Description

Product Specifications
Chemical Composition (Trace Elements PPM)
Grade Al Ca Mg Cr Cu Fe Ni Mn Li Na K Ti B
FD-5 14 0.5 <0.1 <0.03 <0.03 0.3 <0.03 <0.2 0.4 0.8 0.6 1.2 <0.1
Physical & Thermal Properties of Quartz Glass
Mechanical & Physical Parameter Standard Value
Density 2.2 g/cm³
Compressive Strength 1100 MPa
Flexural Strength 67 MPa
Poisson's Ratio 0.14 ~ 0.17
Young's Modulus 72000 MPa
Modulus of Rigidity 31000 MPa
Mohs Hardness 5.5 ~ 6.5
Transformation Point 1280 °C
Softening Point 1780 °C
Annealing Point 1250 °C
Specific Heat (20 ~ 350 °C) 670 J/kg·°C
Thermal Conductivity (20 °C) 1.4 W/m·°C
Index of Refraction 1.4585
Low Thermal Expansion Coefficient 5.5 × 10⁻⁷ cm/cm·°C
Thermal Processing Temperature 1750 ~ 2050 °C
Short-Term Operating Temperature 1300 °C
Long-Term Operating Temperature 1100 °C
Base Material Silicon Dioxide (Natural Quartz)
Color & Clarity Transparent / Colorless
Surface Quality No air bubble, no line
Strain Level 1270 °C Fused Quartz Glass Brick
PPM Grade Options Controlled 10 / 20 / 100 PPM
Form / Shape Circle
Available Thickness 2 mm - 20 mm
Frequently Asked Questions (FAQ)
Q What is the maximum working temperature of this quartz glass?
This quartz glass supports continuous long-term operation at temperatures up to 1100°C and short-term applications reaching 1300°C. Its softening point is 1780°C, providing exceptional thermal stability under extreme environments.
Q What are the standard thickness and dimension specifications?
The standard shape offered is circular with a thickness range between 2mm and 20mm. Custom dimensions and precision-cut configurations can also be supplied according to technical drawings.
Q How does the material prevent thermal shock breakage?
Thanks to its ultra-low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C, the fused quartz structure tolerates drastic temperature variations without warping or cracking, ensuring high performance in rapid thermal processes.
Q What is the chemical purity grade of the FD-5 series?
FD-5 is manufactured from high-purity natural quartz (Silicon Dioxide) with strict impurity controls, keeping metallic trace elements (such as Fe, Cr, Cu, and Ni) below tight sub-PPM tolerances.
Q What optical clarity and surface standards are guaranteed?
The material is completely colorless and transparent, boasting a refractive index of 1.4585. The surface undergoes rigorous quality inspections to ensure it is free from air bubbles, inclusions, or draw lines.

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