File:History of the manufacture of armor plate for the United States navy (1899) (14595769917).jpg

Identifier: historyofmanufac00amer (find matches)
Title: History of the manufacture of armor plate for the United States navy
Year: 1899 (1890s)
Authors: American Iron and Steel Association, comp
Subjects: United States. Navy Armor-plate
Publisher: Philadelphia, American Iron and Steel Association
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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tes displaced. A huge plate of this new Krupp armor was tested at the IndianHead proving grounds recently. The plate was 8J feet wide by 10feet long and 12 inches thick. The gun used for firing carried a 12-inch projectile, next to the largest size used in the Navy. The projec-tile weighed 847 pounds. At the first shot it was discharged at a ve-locity of 1,833 feet per second, and struck the armor plate with aforce of 19,797 tons. The shell penetrated to a depth of 8J inches andthen broke up. The plate was not cracked, and looked as a piece oflead would if struck by an old-fashioned cannon ball. In the second shot the velocity of the projectile was increased to2,022 feet per second, with a striking energy of 24,000 tons. The pro-jectile passed through the armor and broke up, but there were nocracks in the plate. The third shot struck with a force of 21,302 tons and just barelypassed through the plate and broke up. Some of the pieces fell infront of the plate. Still no cracks appeared.
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7,000-TON HYDRAULIC PRESS FOR BENDING ARMOR PLATE. BETHLEHEM STEEL COMPANY. ARMOR PLATE FOR THE NAVY. 33 Other shots were fired upon this Knipp plate. Many made only arough spot on the malleable armor. Others that succeeded in pene-trating the plate made clean cut holes through it within two orthree feet of one another. Yet no cracks appeared. The new platehad stood the test as had no other kind of armor ever made. It will now be used for all the new warships and will make themcapable of resisting the most fearful battering that an enemy couldinflict upon them. A Champion Krupp Process Plate. From The New York Iron Age. There was recently tested in England by John Brown & Co. aplate manufactured by the Krupp process, representing part of the ar-mor for the Japanese battle ship Asahi, with the following results, thethickness of the plate being 8.8 inches, and the projectile used being8-inch armor piercing, made by the American Wheeler-Sterling process: Striking velocity. StriMng en

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