Composition B is a mixture approximately of 60 +/- 2% RDX and 40 +/- 2 % TNT with 1 +/- 0.03 % wax.

The purpose of mixing the two explosives is to combine the advatages of both explosives: power from RDX and stability and castability from TNT. Because it can be melt loaded it is used in making shaped charges, grenades, artillery shells, land mines.

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