One Medic Army, on 08 June 2013 - 02:31 PM, said:
Yup, the "incendiary" part is actually a property of the Uranium.
Nope. Incendiary is essentially the military term for "tracer" (though the terms are not wholly interchangeable), because the coating or base
burn. Usually Either through friction with the air, or by the propellant igniting it. It is capable of physically starting a fire, which even active Uranium is not. Some rounds are designed to present their incendiary properties on impact instead of in flight, which is why the terms are not interchangeable (Dragons Breath shotgun shells are also incendiary rounds, for example)
http://en.wikipedia....iary_ammunition
Uranium, depleted or not, does not "burn". It`s dust
can be ignited, just as most metal dusts can be ignioted (see also "Thermite"), but it is in no way self igniting. The aforementioned pyrophporic effect is in fact no stronger than wioth a lead penetrator, and actually weaker than the dust of most other metals, especially those in the first and second periodic groups (Lithium, magnesium, Cesium, potassium.....)
The ENTIRE reason behing the use of DU in bullets /shells is its higher density than lead (atomic mass depleted Uranium ~ 234, Pb= 207.2), meaning you can make a smaller bullet while retaining the mass, and therefore pack more propellant into the cartridge. This makes for a harder hitting round = deeper penetration.
For a RL example depicting my statement, the GAU-8/A "Avenger" mounted in the nose of an A-10 fires a 4:! mixture of PGU-14/B
Armor Piercing Incendiary andPGU-13/B
High Explosive Incendiary rounds. Both are incendiary (in the 14/Bs case using red phosphorus ignited by the propellant charge to be a tracer round, wheras the 13/B presents it s incendiary effect together with the detonation on impact), but the PGU-13/B contains
zero uranium.
PGU-13/B
PGU-14/B
Edited by Zerberus, 09 June 2013 - 05:33 AM.