Composition B
Explosive, a mix of RDX and TNT / From Wikipedia, the free encyclopedia
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Composition B (Comp B), also known as Hexotol and Hexolite (among others), is a high explosive consisting of castable mixtures of RDX and TNT. It is used as the main explosive filling in artillery projectiles, rockets, land mines, hand grenades and various other munitions.[1] It was also used for the explosive lenses in the first implosion-type nuclear weapons developed by the United States.[2][3]
The standard proportions of ingredients (by weight) are 59.5% RDX (detonation velocity of 8,750 m/s) and 39.5% TNT (detonation velocity of 6,900 m/s), phlegmatized with 1% paraffin wax.[4] Most commonly it is described as 60/40 RDX/TNT with 1% wax added.