... tube 1,95-99.7% Alumina purity, 2,Voltage resistance, 16-25V, 3,Available for tube furnace stove YC-Alundum ... up to 1800C,2, Extreme wear and abrasion resistance,3, Chemical corrosion resistance under high temperature,4, High dielectric properties,5, ... resistance1300 degreeCelsius MΩ≥0.02≥0.02≥0.0214Thermal shock resistance 1550 degree Celsius 6times notracked1550 degreeCelsius 6 times notcracked1300 ...