... x c: Φ3/6,Φ4/9,Φ6/12,Φ9/18,Φ12/24 and so on. B. physical and chemical properties:1. Physical ... be strong oxidation and become powder.3. Different atmosphere effect on use temperaturesAtmosphereHighest Working Temperature (1700)(1800)NO2,CO2,O2,Air1700 ... load is the key element to the highest life, based on the thermal radiation components uncrossed circumstance temperature, temperature and surface ...