... It serves as the first choice of heat resistant material for halogen lamps, mercury lamps, metal halide lamps ... 121512041163Transformation point(°C)112011061066refraction point1.45851.4561.46specific heat(j per kgok)670700690compressive resistance(Pa)>1.1 ... used in halogen lamps, mercury lamps, single-ended lamp, automobile lamp, stage lamp, thermocouple, copiers lights, water treatment lamp casing, all ...