... : 99.9~99.95% Polished and clean. High Quality Niobium Crucible Niobium crucible is made through E-beam ... requestMechnical properties Grade(UNS)AnnealedTensile strength min, psi (MPa)Yield strength min,psi (MPa)Elongation min, % (1 inch gage length ... )14000 (95)7200 (50)30 Chemical Requirements Content, Max, Weight %ElementR04200Unalloyed NiobiumR04210Unalloyed NiobiumR04251 (Reactor grade niobium-1% ...