SEDL / STP / STP64-EB / STP42566S

The Role of Smokeless Powder in the Season Cracking of Small Arms Ammunition

Mitchell, J. W.
Chemist, Ordnance Laboratory. Frankford Arsenal, Philadelphia, Pa.

Pages: 13    Published: Jan 1945

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Abstract

Season cracking of 70-30 cartridge brass cases of small arms and artillery ammunition has been under investigation at the Frankford Arsenal for many years. The nature of this stress-corrosion failure has been found to be intergranular. Much of this work, however, has been directed toward improvements in method of manufacturing the cases so as to reduce the tendency to season crack and little progress had been made toward finding the source of the chemical agent producing the intergranular corrosion.