... the most intense heat. 1.Tungsten electrodes for vacuum furnace:Chemical composition: tungsten >99.95% ( percentage ... [1/Ω·m)]Specific electrical resistance at 20 °C: 0.050 [(Ω·mm2)/m] 2.SMT can provide the ... .Main applications:sapphire single crystal growth furnace, metallurgical industry furnace, vacuum furnace, high temperature furnace, silicon industry furnace, quartz glass, metal extracting, , ...