Quartz Glass: High Temperature Glass

Quartz Glass: High Temperature Glass Resistant

Quartz glass is resistant to water and strong acids and low resistance to alkali.

Quartz glass is made from almost pure silica (SiO2 ≥ 99.9%) that makes it a heat proof glass. that makes it a heat proof glass.

Quartz Glass is resistant to water and strong acids (excluding hydrofluoric acid) and low resistance (as compared with other types of glass) to alkali.

Quartz glass has a high melting point and a low coefficient of thermal expansion, which makes it resistant to sudden changes in temperature (thermal shock resistance).

SPECIFICATION

PRINCIPAL QUALITIES

Fused quartz begins to soften at about 1700°C. It can be worked at 1100°C for a long period while for a short period it can endure 1450°C.

Almost no acid react with quartz, except for HF. Due to the construction of pure SiO2, the anti-acid capability of quartz is 30 times better than ceramics, and 150 times better than stainless steel. Its chemical inertia or stabilization is hardly comparable by any other common material.

The thermal expansion coefficient of quartz is so low that it can endure steep temperature change. For example, heat a quartz panel to 1100°C and then immerse it into water at normal temperature, it won’t crack!

Quartz is transparent to wide spectrum, from IR to UV. More than 90% of visible light energy can pass, and more than 80% of UV can pass through.

Resistance of quartz is 10000 times of normal glass. Good insulating performance even at high temperature.

Quartz Glass | Products

STANDARD CLEAR QUARTZ TUBE

PQ181, Standard clear quartz glass tube, is produced by specialized high purity sand and automatic-controlled fusing fuinace. It has the characteristics of high purity, strong heat resistant glass.

High transmission and accueate dimension,etc. The stable supply of PQ181 with OH content 1-20PPM after air or vacuum baking is available.

Application:
It is widely applied for halogen lamp,meroury lamp, single-ended lamp, automobile lamp, stage lamp, thermocouple, printer lamp, sleeve for water treatment lamp, quartz utensils and ploes,etc.

Chemical Composition of Standard clear quartz tube:

Chemical Composition - unit: PPM
K+NaCaFeAlMgTiBaLiCu
<10<3.0<1.5<20<1.0<3.0<0.2<1.0<0.5

Dimensional Tolerance of Standard clear quartz tube:

Dimensional Tolerance
Range of ODODWTSidingOut of Round%
≤6mm±2.0%±10%±10%1.2%0.15%
6mm - 15mm±1.25%±8%±8%1%0.15%
15mm - 20mm±1.25%±10%±10%1.5%0.15%
20mm - 25mm±1.25%±12%±12%1.5%0.15%
25mm - 30mm±1.35%±12%±12%1.2%0.15%
30mm - 80mm±1.5%±12%±12%1.2%0.15%

Physical Properties of Standard clear quartz tube:

Physical Properties
Density 20°C Kg.m-32.2 x 10m3
Coefficient of expansion 25-300°C °C -15.6 x 10-7
Softening Point (°C)1670
Annealing Point (°C)1210
Strain Point (°C)1110
Quart Glass Tubing
Quart Glass Tubing

QUARTZ TUBE FOR METAL HALIDE LAMP

  1. High purity Quartz sand
  2. High transmittance in the visible Region
  3. Low OH,β-OH<=1ppm
  4. Extreme Tight Dimensional Tolerances

Application
It is widely applied for MH lamp, such as single-ended, automobile, G12, double-ended and high power stage lamp.

Chemical Composition of quartz tube for Metal Halide lamp:

Chemical Composition - unit: PPM
NaKCaFeAlMgTiBaLiCuNiCr
<0.8<0.7<0.6<0.5<16.2<0.3<2<0.05<0.9<0.05<0.05<0.05

Physical  Properties of  quartz tube for Metal Halide lamp:

Physical Properties
Density 20°C Kg.m-3 (x103)2.2
Coefficient of expansion 25-300°C °C -1 (x10-6)0.56
Softening Point (°C)1670
Annealing Point (°C)1210
Strain Point (°C)1110
Young Modulus (Pa)7.3 x 105

Dimensional Tolerance of quartz tube for Metal Halide lamp:

Dimensional Tolerance
Range of ODWTSidingOut of Round%
4.0±0.101.0±0.0610%1.2%0.15%
5.0±0.101.0±0.0610%1.2%0.15%
7.0±0.101.0±0.068%1.0%0.15%
15.0±0.151.0±0.088%1.5%0.15%
17.0±0.181.0±0.0810%1.5%0.15%
20.0±0.251.5±0.1010%1.5%0.15%
21.6±0.251.8±0.1012%1.5%0.15%
23.0±0.301.5±0.1512%1.5%0.15%
25.3±0.351.65±0.1512%1.2%0.15%
29.0±0.401.9±0.2012%1.2%0.15%
36.0±0.502.0±0.2512%1.2%0.15%

STANDARD UV BLOCK QUARTZ TUBE

Capable of stopping nearly all the radiation if UV-B & UV-C and a big proportion of UV-A. With maximum visible lights, the Ce doped quartz tube can serve as the material of halogen lamps, high density discharge lamps and other UV lights. Thus, it can effectively prevent harm to the skin of people and objects that have to be under explosion of UV radiation and set out the maximum visible light at the same time.

Quart Glass Tubing

Spectral Transmission at 1.00mm Thickness:

Spectral Transmission at 1.00mm Thickness
Nm<220230-280290-330315350380590780
%0<1901588929393

Chemical Composition of Standard UV block quartz tube:

Chemical Composition - unit: PPM
K+NaCaFeAlMgTiBaLiCu
<10<3.0<1.5<20<1.0<3.0<0.2<1.0<0.5

Physical Properties of Standard UV block quartz tube:

Physical Properties
Density 20°C Kg.m-3 (x103)2.2
Coefficient of expansion 25-300°C °C -1 (x10-6)0.58
Softening Point (°C)1620
Annealing Point (°C)1160
Strain Point (°C)1080
Young Modulus (Pa)7.1 x 105

Dimensional Tolerance of Standard UV block quartz tube:

Dimensional Tolerance
Range of ODODWTSidingOut of RoundBow / 1220mm
≤6mm±2.0%±10%12%2.0%2.5mm
6.0mm - 15.00mm±1.25%±8%10%1.5%2.5mm
15.00mm - 20.00mm±1.25%±10%15%1.5%2.5mm
20.00mm - 25.00mm±1.25%±10%15%1.5%3.0mm
25.00mm - 30.00mm±1.35%±12%15%1.5%3.0mm
Opaque Quartz Tube

STANDARD OPAQUE QUARTZ TUBE

With the adoption of distinctive technique, this opaque quartz glass tube has its typical characteristics of good visual aspects and stable physical & chemical properties. It serves as material of infrared heating for heaters, micro-wave oven, electrical baking oven, car paint baking, sterilization container and other consumptive and industrial infrared application. Further processing of trim cutting, bowing, firepolishing can be done according to the demand of the customers.

Physical & Chemical Properties of Standard opaque quartz tube:

Physical and Chemical Properties
OpalescenceSi02Heat Resistance
500nm99.5%900°C 15
Spectral transmission at 500nm < 10%Si02 > 99.5%Keep under 900°C for 15 minutes, then put into 20°C water. No crack after 3 minutes.

Dimensional Tolerance of Standard opaque quartz tube:

Dimensional Tolerance
Range of ODWTSidingOut of Round%
8.0±0.151.0±0.1010%1.5%0.15%
9.0±0.151.0±0.1010%1.5%0.15%
10.0±0.151.0±0.1010%1.5%0.15%
10.5±0.151.0±0.1012%1.5%0.15%
11.0±0.181.0±0.1012%1.5%0.15%
12.0±0.201.0±0.1012%1.5%0.15%
13.0±0.221.0±0.1012%1.5%0.15%
12.0±0.31.0±0.1012%1.5%0.15%

OZONE FREE QUARTZ TUBE

The ozone free quartz tube, doped with Ti, can prevent radiation of high-density UV rays but generate no ozone. It is mainly used for ozone-free germicidal lamp and others. Spectrum transmission at 185nm is 0 and no ozone. UV transmission >=85% at 254nm.

Ozone Free Quartz Tube

Chemical Composition of 0zone free quartz tube:

Chemical Composition - unit: PPM
K+NaCaFeAlMgTiBaLiCu
<10<3.0<1.5<20<1.0<3.0<0.2<1.0<0.5

Physical  Properties of 0zone free quartz tube:

Physical Properties
Density 20°C Kg.m-3 (x103)2.2
Coefficient of expansion 25-300°C °C -1 (x10-6)0.56
Softening Point (°C)1630
Annealing Point (°C)1180
Strain Point (°C)1070
Young Modulus (Pa)7.3 x 105

Dimensional Tolerance of 0zone free quartz tube:

Dimensional Tolerance
Range of ODWTSidingOut of RoundBow / 1220mm
5.0±0.081.0±0.0610%2.0%2.5mm
12.0±0.101.0±0.1010%1.5%2.5mm
15.0±0.121.0±0.1215%1.5%2.5mm
17.0±0.151.0±0.1515%1.5%2.5mm
18.5±0.151.0±0.1515%1.5%2.5mm
19±0.201.0±0.1515%1.5%2.5mm
25.0±0.302.5±0.0215%1.5%2.5mm

Spectral Transmission at 1.00mm Thickness of 0zone free quartz tube:

Spectral Transmission at 1.00mm Thickness
Nm185<220230-380550590780
%00≥85≥90≥92≥92

Quartz Panels

Quartz panels are characterized by their transparency to a wide spectrum, including ultraviolet (UV), visible light, and infrared (IR). Quartz panel are also characterized by their stable endurance in high temperature and chemical challenging environments, due to its the low thermal expansion. Due to these capabilities, quartz panel is a qualified optical material in many demanding applications.

Quartz sheet is vertically produced in the factory, subsequently it can be post-processed(cutting, welding, polishing, annealing, etc) into sheet, plate, lens, window, pane, disk, substrate, etc. SiO2 content is above 99.99%, Mons’ hardness scale is 7. More than 90% of visible light can be passed. It can endure high temperature (as high as 1100°C) with a low thermal expansion coefficient. Different shapes such as Prism, lens and disk are available.

Quartz has been widely used in illumination, laser, sterilization, lab equipment, insulator, chemical equipment, heater, etc.

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