An alloy is a blend of metals prepared by mixing the components.Alloys are homogeneous solid solutions in which the atoms of one metalare distributed randomly among the atoms of other. Misch metal is analloy which contains some of the lanthanoid metals. It contains 95%lanthanoid metals, 5% iron and traces of S, C, Ca and Al. Mischmetall isused in Mg-based alloy to produce bullets, shell and lighter flint.