TNT is still used for military explosives primarily because it's A) pretty darn powerful and B) one of the few explosives that works well with molten casting, t

TNT is still used for military explosives primarily because it's A) pretty darn powerful and B) one of the few explosives that works well with molten casting, the latter is especially important for ease of manufacturing and more importantly when you need a very specific explosive geometry for things like shape charges, fragmenting munitions and nuclear warheads. But it depends on the application, RDX and PETN are often uses for demolition, mines and such applications because they can be easily stabilized in a polymer, however that also makes their end PBX form much less powerful.