Inventors:
Bruce L. Bramfitt - Bethlehem PA
Leonard C. Luscomb - Longview TX
Assignee:
Bethlehem Steel Corporation - Bethlehem PA
International Classification:
C22C 3812
C22C 3804
Abstract:
A high strength, high toughness steel comprising from about 0. 32 to about 0. 36 percent by weight carbon, from about 0. 40 to about 0. 60 percent by weight manganese, from about 0. 15 to about 0. 35 percent by weight silicon, from about 0. 80 to about 1. 10 percent by weight chromium, from about 0. 55 to about 0. 70 percent by weight molybdenum, from about 0. 01 to about 0. 05 percent by weight aluminum, from about 0. 002 to about 0. 004 calcium, no more than about 0. 015 percent by weight phosphorus, no more than about 0. 008 percent by weight sulfur, with the balance being iron.