... Chemical composition: Fe,Si,Ni,W,Mo,Ti,Nb,O,C,H,N,Ta Minerals & Metallurgy: Tantalum sheet1. Chemical compositionGradeChemical composition, ... ,)ThicknessToleranceWidthToleranceLengthToleranceGrade 1Grade 20.15-0.2+0.015+0.0250-300+2100-1000+20.2-0.3+0.02+0. ... +0.08+0.120-200+250-700+21.5-2.0+0.12+0.1450-200+250-700+22. ... 0.250-200+150-500+14.0-6.0+0.2+0.2450-200+150-300+1Remarks: Special requirements to ...