Tantalum yog cov khoom siv hlau.Nws feem ntau muaj nyob rau hauv tantalite thiab coexists nrog niobium.Tantalum muaj nruab nrab hardness thiab ductility.Nws tuaj yeem kos rau hauv filaments los ua nyias foils.Nws thermal expansion coefficient tsawg heev.Cov khoom siv tshuaj zoo heev, kev tiv thaiv corrosion siab, tuaj yeem siv los ua cov hlab ntsha evaporating, thiab lwm yam, tuaj yeem siv ua electrodes, electrolysis, capacitors thiab rectifiers ntawm cov raj hluav taws xob.