Minerals & Metallurgy: Tantalum sheets Grade: Ta1,Ta2,FTa1,FTa2 Chemical ... ,Ni,W,Mo,Ti,Nb,O,C,H,N,Ta Minerals & Metallurgy: Tantalum sheet1. Chemical compositionGradeChemical composition, maxFeSiNiWMoTiNbOCHNTaTa10.0050. ... 0020.10.0350.0030.0020.01BalanceRemarkTa1 and Ta2 are made of ingot blanks, FTa and FTa are made of vertical melted ... Special requirements to be agreed upon by the supplier and buyer.