John Moncrieff: Your Source for High-Purity Quartz Glass Products

John Moncrieff offers a comprehensive range of quartz glass products, meticulously crafted from high-purity silicon oxide glass in three distinct grades to meet varying light transmission requirements. Our offerings include flat glass, tubular glass, and custom-formed shapes such as bowls, hollow ware, and boats.

Key Features of Quartz Glass:

Exceptional Heat Resistance: Withstands temperatures up to 1200°C while maintaining structural integrity.

Superior Hardness: Achieves a Mohs hardness of 7, ensuring durability and resistance to scratches.

Broad Spectrum Transparency: Transmits a wide range of light, from ultraviolet to infrared, with minimal absorption.

Excellent Chemical Resistance: Resists corrosion from most acids and alkalis, demonstrating exceptional chemical stability.

Radiation Resistance: Maintains its properties under exposure to ionizing radiation.

Electrical Insulation: Offers excellent electrical insulation properties, even at high temperatures.

Additional Properties:

Water and Acid Resistance: Resistant to water and strong acids (except hydrofluoric acid).

Thermal Shock Resistance: Withstands sudden temperature changes due to its low thermal expansion coefficient.

High Melting Point: Maintains its solid state at extremely high temperatures.

Applications:

Quartz glass is widely used in industries demanding materials with exceptional heat resistance, chemical stability, and optical clarity. Common applications include:

Semiconductor Manufacturing: Used in various processes, including wafer fabrication and lithography.

Optical Components: Employed in lenses, prisms, and other optical devices.

High-Temperature Applications: Ideal for furnaces, crucibles, and other equipment operating at high temperatures.

Chemical Processing: Utilized in reactors, vessels, and components handling corrosive substances.

Lighting: Employed in various lighting applications, including halogen lamps and ultraviolet sources.