Technical Information Clear Fused Quartz

Why choose fused quartz products?

Fused quartz is made from the melting of crushed natural crystalline quartz, with purity above 99.995%. Quartz products feature excellent thermal shock resistance because of its low coefficient of thermal expansion. Quartz products can work under a wide thermal operating range and withstand rapid temperate changes.

What's the highest temperature that fused quartz products can withstand?

The recommended maximum operating temperature of our quartz products is 1200°C (2192°F).

Some key thermal properties are:

fused quartz thermal

What is the chemical composition of your clear fused quartz products?

fused quartz composition

How is the chemical resistance of fused quartz products?

Compared with most other materials, quartz products exhibit excellent chemical resistance to most acid, alkaline and neutral materials. The only exceptions are hydrofluoric acid which attacks quartz products at all temperatures, and phosphoric acid which attacks quartz at temperature above 150°C.

What are the engineering properties of your quartz products?

fused quartz density

How to clean and dry quartz products?

Quartz products should be cleaned before use. Use distilled or deionized water to remove dirt, grease, or stains. Products that were badly contaminated, or would be used under high temperature or reprocessed, should be washed by detergent, and then cleaned by distilled or deionized water, followed by rapid drying.

The detergent that's commonly used is prepared by mixing 40% hydrofluoric acid and water in the proportion of 1 : 2~3. Dip the quartz products in the acid solution for no more than 5 minutes, then clean it with deionized water, and dry it rapidly.

The products must be dried in a clean and dustless environment or in special drying equipment to avoid being polluted again.

How to transport and store quartz products?

Quartz products after cleaning must be packed with clean packing materials or be used immediately. Wearing gloves instead of using your bare hands when touch the products. Use good cushion materials for packaging. As quartz products are fragile, be very careful to avoid collision during packing, transportation, storage and usage.

What should I pay attention to when I use quartz products?

  • High temperature can accelerate devitrification, esp. when in presence of alkaline solution, salts, vapors or oxidation environment. Devitriciation can be forestalled by washing the quartz surface in the hydrofluoric acid detergent (as describe above), rinsing it thoroughly by deionized water, and drying it rapidly.
  • Compared with other materials, quartz products are less expanded when temperature increases. Therefore, care should be taken when quartz products are connected with other materials.
  • When using large and thick quartz products or irregular shapes, be careful not to heat up or cool down too quickly.
  • When used under heavy load in high temperature, thicker quartz products should be considered.