Tantalum sinadari ne na karfe. Ya fi kasancewa a cikin tantalite kuma yana tare da niobium. Tantalum yana da matsakaicin tauri da ductility. Ana iya jawo shi cikin filaments don yin ɓangarorin bakin ciki. Matsakaicin faɗaɗawar thermal ɗinsa kaɗan ne. Kyawawan kaddarorin sinadarai, babban juriya na lalata, ana iya amfani da su don yin tasoshin evaporating, da sauransu, kuma ana iya amfani da su azaman lantarki, electrolysis, capacitors da masu gyara bututun lantarki.
Shafukan mu na niobium suna yin birgima mai sanyi kuma an rufe su tare da rage ƙimar mallakar mallaka don tabbatar da ingantaccen ƙarfe. Kowane takarda yana fuskantar ƙwaƙƙwaran dubawa don girma, ƙarewar ƙasa, da lebur.