Extruded tantalum billets and niobium billets are described having a
substantially uniform grain size and preferably an average grain size of
about 150 microns or less and more preferably an average grain size of
about 100 microns or less. The extruded billet can then be forged or
processed by other conventional techniques to form end use products such
as sputtering targets. A process for making the extruded tantalum billets
or niobium billets is also described and involves extruding a starting
billet at a sufficient temperature and for a sufficient time to at least
partially recrystallize the billet and form the extruded billet of the
present invention.