1. High purity quartz ,SiO2> =99.99% 2. No bubble, strip, chipping or scratch 3. we can manufacture the quartz products according to customer’s design
* Features of JD Quartz Glass tube
1. High purity made of 99.99% pure quartz 2. Strong Hardness, Can reach Morse level 7. 3. High temperature resistance, can work under 1200°C continuously,and in short time can even work under 1500°C. 4. Acid and Alkali resistance. Except Hydrofluoric acid, JD Quartz Glass tube does not react with any acid 5. Electric insulation, it is 10000 times of usual glass. 6. High light transmittance , it is different from 85%-95% depend on different spectrum. 7. Excellent thermal shock stability ,Small thermal expansion coefficient,it is only 5.5×10-7/℃ 8. Control in less than 20 PPM, 15 PPM, 10 PPM, 5 PPM ,2 PPM.
Hardness
5.5-6.5 Mohs' Scal 570 KHN 100
Design Tensile Strength
4.8x107 Pa (N/mm2) (7000psi)
Design Compressive Strength
>1.1x109 Pa (160,000 psi)
Bulk Modulus
3.7x1010 Pa (5.3x106psi)
Rigidity Modulus
3.1x1010 pa (4.5x106psi)
Young's Modulus
7.2x10-10 pa (10.5x106 psi)
Poisson's Ratio
0.17
Coefficient of Thermal Expansion
5.5x10-7cm/cm. °C (20°C-30°C)
Thermal Conductivity
1.4 W/m. °C
Specific Heat
1683°C
Softerning Point
64 × 10 3
Annealing Point
1215°C
Strain Point
1120°C
Electrical Receptivity
7x107 ohm.cm (350°C)
Velocity of Sound-Shear Wave
3.75x103 m/s
Velocity of Sound/ Compression Wave
5.9x103 m/s
Sonic Attenuation
<11db/m MHZ
Chemical Stability (except hydrofuoric)
High resistance to water and acids
Dielectric Properties (20°C and 1MHZ) Constant Strength Loss Factor Dissipation Factor
3.75 5x107 V/M Less than 4x10-4 Less than 1x10-4
Packing & Delivery
Company Profile
Hongya Quartz Glass tubes are widely used in all kinds of lights, such as sterilization lamp, mercury lamp, metal halide lanmp, diffusiion tube, protestion tube, optical instrument, sight glass, observation window for furnace, semiconductor, photoelectron, military insductry, metallurgy and water treatment.
