High quality tantalum powder, ore , plate, bar, kinds of tantalum products Grade :FTa-1, FTa-01Appearance: Dark grad powder The principal ore of niobium and tantalum, used mostly as an additive in steel making and in superalloys; used in metallurgy for heat-resistant alloys, rust-proofing (stainless steel) and electromagnetic superconductors. Brazil and Canada are leading producers. Used in cell phones and computer chips.