Minerals & Metallurgy: Tantalum sheets Grade: Ta1,Ta2,FTa1,FTa2 Chemical composition: Fe, ... ,W,Mo,Ti,Nb,O,C,H,N,Ta Minerals & Metallurgy: Tantalum sheet1. Chemical compositionGradeChemical composition, maxFeSiNiWMoTiNbOCHNTaTa10.0050.0050.0050.0050 ... .10.0350.0030.0020.01BalanceRemarkTa1 and Ta2 are made of ingot blanks, FTa and FTa are made of vertical melted bars2 ...