CAST IRON

文件类型：PDF文档
文件大小：62K
FIELD : ferrous metallurgy; composition of cast irons; manufacture of pipes, gate valves, shells, hatch covers, grates.SUBSTANCE : proposed cast iron contains the following constituents, mass-% : carbon, 3.2-3.6; silicon, 3.5-4.5; manganese, 3.5-4.5; chromium, 1.5-2.5; copper, 0.5-1.0; barium, 0.003-0.008; rare-earth metals, 0.05-0.1; antimony, 0.004-0.008; niobium, 1.0-2.0; nitrogen, 0.1-0.15; nickel, 3.5-4.5; the remainder being iron.EFFECT : enhanced hardness of cast iron.1 tbl