Not entirely true. You see there are many reasons why US uses Depleted Uranium and one of them is to make big ball of fire to the Diesel Fuel Tanks. Depleted Uranium are Super High Density Material and it is also came from a radioactive material, which means when it is in contact against steel, it becomes a boiling hot metal rod that is as almost as hot as the sun. 100% of the time, Russian Tanks during Gulf War tend to go in flames because of Depleted Uranium Armor. Not just because of its cheap properties and high penetration value, but it is also because of its mechanics of going red bot metal rod that everything it touches after it penetrates steel, everything on the other side of that steel armor, homogenous, composite armor go up in flames.