Properties  Performance of quartz glass of the  Colorful  mineral products company

1.High temperature resistance; quartz glass softening point temperature is  about 1730 ° C ,ita can be used at 1180 ℃ for a long time, short-term maximum using  temperatures up to 1450 ° C

2.Mechanical performance: Mechanical properties of the quartz glass better than glass and ceramics,  density ：2.2g/cm3， Modulus of elasticity 700 * 10³kg/cm3 ，the tensile strength -500kg/cm3, Mohs  hardness 5.5-6.5 at 1180 ° C annealing temperature, the strength reaches a maximum, which is one of the major characteristics of the quartz glass.

3 Thermal properties: 5.4 * 10-^7, since the coefficient of thermal expansion of quartz glass is extremely small, equivalent to the ordinary glass 1/12-1/20,  from 0-1000 ° C the average expansion coefficient of thermal expansion is extremely small, so it the ability to withstand hot and cold tolerance temperature difference is quite strong, 1200-15 ℃ generally can withstand thermal shock test

4 Quartz glass is a good acid material; the outer top of a hot phosphoric acid of more than 300 degrees and hydrofluoric acid  , at high temperatures, it is resistant to the erosion of sulfuric acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon, and sulfur, etc., its chemical stability is equivalent to the acid-resistant ceramic 30 times equivalent to the nickel-chromium alloys and ceramic white stainless steel 150 times, it is high temperature, thermal shock, thermal expansion coefficient, particularly small, in particular, chemical stability at high temperatures. any other materials can not match.

5 the electrical insulating properties of the quartz glass is excellent;, its resistance at room temperature is equal to 100 times that of ordinary glass, for all the frequencies of the dielectric loss is very small, the insulating compressive strength. The quartz glass is an excellent insulating material,

 6 the optical properties of the quartz glass: the quartz glass tube in the ultraviolet to infrared spectral band cross a good light transmitting property, visible light through more than 95%, in particular is transparent to the ultraviolet spectral region, up to the maximum transmittance. more than 85%,

 7. The specific heat and thermal conductivity; the average specific heat of the quartz glass 0 --- 100 ℃ to 722 joules / kg, k0, 0 --- 500 ° C to 964 joules / kg, ko 0 --- 900 ° C for 1052 joules / kg, K0, the thermal conductivity of the quartz glass tube rate 20 ° C to 1,38 w / kg, and m, 200 ° C to 1,55 W / kg, m, 400 ° C, 84w/kg, m, 950 ℃ to 2, 68w/kg, m