... kind of resistance heating element basically made of high pure Molybdenum Disilicide.2.MoSi2 heating element 1) ... Main type :U, W ,UL, WL, Rod . Material grade :M1700 ... temperature,MoSi2,element is very brittleness,while under high temperature it is plasticity.So,the better way ... A, mm(5) the quantity 2013 XYX super quality U type furnace heating element