www.chida.info heating element has a greater specific resistance. When it is heated in air by electrifying until surface temperature of hot zone reaches 1050°C±50°C, its resistivity will be in the range of 600-1400mm2/M. The resistance of SiC heating element changes with increasing temperature. From room temperature to 800°C, the curve of resitance-temperature is negative value and turns positive when the temperature is above 800°C. The atmosphere inside the furnace has great affection to the service life of the SiC Super heating elements. During working, the SiC Super heating elements (SiC Super elements) is oxidized gradually and produce SiO2 which seperates SiC crystals. So the local zone resistance increases and the volume expends until SiC element break down. SiC Super heating elements (SiC Super elements) can work(1450°C)continuously for 7000 hours in the dry and pure air. SiC heating element has a greater specific resistance. When it is heated in air by electrifying until surface temperature of hot zone reaches 1050°C±50°C, its resistivity will be in the range of 600-1400mm2/M. The resistance of SiC heating element changes with increasing temperature. From room temperature to 800°C, the curve of resitance-temperature is negative value and turns positive when the temperature is above 800°C. The atmosphere inside the furnace has great affection to the service life of the SiC Super heating elements. During working, the SiC Super heating elements (SiC Super elements) is oxidized gradually and produce SiO2 which seperates SiC crystals. So the local zone resistance increases and the volume expends until SiC element break down. SiC Super heating elements (SiC Super elements) can work(1450°C)continuously for 7000 hours in the dry and pure air. Silicon Carbide Heating Element,Silicon Carbide Heating Elements,Silicon Carbide Element,Silicon Carbide Elements,Silicon Carbide heater,Silicon Carbide heaters,SiC Heating Element,SiC Heating Elements,SiC Element,SiC Elements,SiC heater,SiC heaters,lab furnace,lab furnaces,Laboratory furnace,Laboratory furnaces,industry furnace,industry furnaces,glass furnace,glass furnaces,ceramic furnace,ceramic furnaces,SiC super heating elements,SiC super heating element,SiC super elements,SiC super element,SiC super