page_title: Composition B
hierarchical_section_title: Composition B
caption_attribution_description: English: U.S. Army soldiers attach plastic explosive devices to a formed projectile during Talisman Sabre 2011 at Shoalwater Bay Training Area in Queensland, Australia, July 15, 2011. The soldiers are assigned to the 2nd Infantry Division's 38th Engineers Company, 4th Stryker Brigade Combat Team.
context_page_description: Composition B, colloquially "Comp B", is an 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. It was also used for the explosive lenses in the first implosion-type nuclear weapons developed by the United States.
  The standard proportions of ingredients are 59.5% RDX and 39.4% TNT, phlegmatized with 1% paraffin wax. Most commonly it is described as 60/40 RDX/TNT with 1% wax added.
context_section_description: Composition B, colloquially "Comp B", is an 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. It was also used for the explosive lenses in the first implosion-type nuclear weapons developed by the United States.
  The standard proportions of ingredients (by weight) are 59.5% RDX (detonation velocity of 8,750 m/s) and 39.4% TNT (detonation velocity of 6,900 m/s), phlegmatized with 1% paraffin wax. Most commonly it is described as 60/40 RDX/TNT with 1% wax added.
caption: A 40 lb (18 kg) shaped charge munition (marked to indicate a Composition B filling) used for various demolition purposes such as boring a hole for a cratering charge
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