]Staballoys are metal alloys of a high proportion of depleted uranium with other metals, usually titanium or molybdenum, designed for use in kinetic energy penetrator armor-piercing munitions. One formulation has a composition of 99.25% of depleted uranium and 0.75% of titanium. Other variants can have 3.5% of titanium. They are about twice as dense as lead. An alternative to staballoys in kinetic penetrator munition is tungsten, but it's more expensive, more difficult to machine and isn't pyrop… (More on Staballoy)