Quartz glass' softening point is abouy 1730℃, it can work at 1000℃,also can work at 1450℃ in short time.
Anti-corrosion
The acid resistance of quartz is 30 times that of ceramic and 150 times that of stainless steel, especially its chemical stability at high temperature.
High Pressure Resistant
Quartz can withstand drastic temperature changes. Quartz glass won't crack even when heated to 1100℃ and placed in normal temperature water.
High transmittance
Quartz glass has good light transmittance in the whole spectrum from ultraviolet to infrared.
High Insulation
The resistance value of quartz glass is 10 thousand times that of ordinary glass. It is a very good insulating material, even at normal temperature, it has a good insulating performance.