Nope. Our exports are mostly fuel (16%), non-electronics-based machinery (12%), Electronics-based machinery (10%), vehicles (8%), Optical/Technical/Medical equipment (5%), gems and precious metals (4%), pharmaceuticals (5%), plastics (4%), organic chemicals: (3%), commodities (3%), chemical products: (2%),
fruits/grain/seed (2%), cereals (1%), iron/steel items (1%), residues/waste/animal fodder (<1%), inorganic chemicals/precious metal compounds/isotopes (<1%), ... and the remaining categories are all less than 1%.
Explosives constitute less than one-third of one-percent of US exports. Of those, more than one-third are for commercial purposes, i.e. construction, demolition and mining, and are not suitable for military purposes. About one-sixth of exported explosives are fireworks and are only for entertainment. Another one-sixth are commercial pyrotechnics. Military ordnance shares the remaining less-than-one-third of explosives with propellants and detonators and thus represents only a small portion of an insignificant percentage of US exports.