Quartz Plate

Fused Silica Quartz Plate – Heat Resistant

Quartz sheets are made from high-purity quartz material and have the characteristics of high temperature resistance, high light transmittance, and low coefficient of expansion. They can be customized in size and thickness and are widely used in optical windows, semiconductor manufacturing processes, laboratory glassware and other fields. They are key components of optoelectronic and scientific research equipment.

A quartz plate is a flat sheet made from high-purity silicon dioxide (SiO₂), also known as fused quartz plate or quartz glass plate. It is produced by melting natural or synthetic high-purity quartz and then cutting and polishing it into flat panels.

Description of Common Types

Clear quartz plates: General-purpose, high-temperature resistant, and highly transparent; used for viewing windows, optical lenses, and furnace windows.
Frosted quartz plates: Single-sided or double-sided frosted, anti-glare; used in lighting and heating equipment.
Opaque quartz plates: High infrared radiation and excellent thermal insulation; used for far-infrared heating and ovens.
Polished Quartz Sheets: Double-sided optical polishing; used in semiconductors, optical instruments, and laser equipment.

Product Specification

Square quartz plate

Round Quartz Discs

Length × Width	Dimensional Tolerances	Standard Thickness	Thickness Tolerances
10×10	±0.1	0.5 / 1.0 / 2.0	±0.05～±0.1
20×20	±0.1	0.5 / 1.0 / 2.0 / 3.0	±0.05～±0.1
30×30	±0.1	1.0 / 2.0 / 3.0	±0.05～±0.1
40×40	±0.1～±0.2	1.0 / 2.0 / 3.0 / 4.0	±0.08～±0.1
50×50	±0.1～±0.2	1.0 / 2.0 / 3.0 / 5.0	±0.08～±0.1
60×60	±0.2	2.0 / 3.0 / 5.0	±0.1
80×80	±0.2	2.0 / 3.0 / 5.0	±0.1
100×100	±0.2～±0.3	2.0 / 3.0 / 5.0	±0.1
150×150	±0.3	3.0 / 5.0	±0.1～±0.2
200×200	±0.3～±0.5	3.0 / 5.0	±0.1～±0.2

Diameter Φ	Diameter Tolerances	Standard Thickness	Thickness Tolerances
10	±0.1	0.5 / 1.0	±0.05
20	±0.1	0.5 / 1.0 / 2.0	±0.05
25	±0.1	0.5 / 1.0 / 2.0	±0.05
50	±0.1～±0.2	1.0 / 2.0 / 3.0	±0.05～±0.1
70	±0.2	1.0 / 2.0 / 3.0	±0.1
80	±0.2	2.0 / 3.0	±0.1
100	±0.2～±0.3	2.0 / 3.0 / 5.0	±0.1
150	±0.3	3.0 / 5.0	±0.1～±0.2
200	±0.3～±0.5	3.0 / 5.0	±0.1～±0.2

Packaging and Shipping

Why Choose Southeast Quartz?

Southeast Quartz relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier to global customers. All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test, and purity test before leaving the factory to ensure stable performance, no impurities, and no leakage.

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