Editing Cordite (section)

=== Cordite N ===
An important development during World War II was the addition of another explosive, [[nitroguanidine]], to the mixture to form ''triple-base'' propellant or ''Cordite N'' and ''NQ''. The formulations were slightly different for artillery and naval use. This solved two problems associated with the large naval guns fitted to British Navy's [[capital ship]]s: gun flash and muzzle erosion.  Nitroguanidine produces large amounts of [[nitrogen]] when heated, which had the benefit of reducing the muzzle flash, and its lower burning temperature greatly reduced the erosion of the gun barrel.{{Citation needed|date=January 2021}}

N and NQ were also issued in limited amounts to ammunitions used by the British [[Ordnance QF 25-pounder|25-pdr]] and [[BL 5.5-inch Medium Gun|5.5-inch]] land-based artillery pieces.{{Citation needed|date=January 2021}}

After World War II production of double-base propellants generally ended. Triple-base propellants, N and NQ, were the only ones used in new ammunition designs, such as the cartridges for 105&nbsp;mm Field and for 155&nbsp;mm [[FH70]].{{Citation needed|date=January 2021}}