ACTION OF EXPLOSIVES ON METALS USED IN AMMUNITION
PICATINNY ARSENAL DOVER NJ
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An examination was made of the metal strips of copper, brass, aluminum, stainless steel, mild steel, mild steel coated with acid-proof black paint and mild steel plated with copper, cadmium, nickel and zinc after storage for two years at atmospheric temperature and 50C. in contact with the explosives PETN, 5050 Pentolite, Haleite, 6040 Ednatol, 7525 Tetrytol and RDX compositions A and B, both dry and containing approximately 0.5 percent moisture. After two years of continuous storage, the dry explosives had little or no effect on any of the metals. The action of the moist explosives on these same metals varied from a light to a heavy tarnishing effect with the exception of moist Haleite and 6040 Ednatol, which had a decidedly heavier corrosive action on all metals except stainless steel. Stainless steel and aluminum appear to be the most corrosion-resistant of the metals considered. The report also contains the results of similar tests made using magnesium metal and a magnesium-aluminum alloy, J-1. It is considered that both are also satisfactory for use in ammunition components with all the explosives tested except Amatol.
- Ammunition and Explosives