Evening Republican, Volume 19, Number 150, Rensselaer, Jasper County, 25 June 1915 — The Strength of Shrapnel [ARTICLE]

The Strength of Shrapnel

Shrapnel, says the American Machinist, is really a flying cannon, which shoots its charge while in flight or explodes on contact Its speed of 600,000 feet per second is produced by a pressure of from 30,000 to 36,000 lbs. per square inch from the powder that expels it from the gun. Its bursting charge exerts a pressure of from 80,000 to 26,000 pounds per square Inch. The metal of its ease has a tensilo strength of 186,000 pounds to the square Inch and an elastic limit of 110,000 pounds per square Inch.