CAST IRON WITH VERMICULAR GRAPHITE

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FIELD : ferrous metallurgy; composition of cast irons; machine-tool industry; railway engineering; tractor and automobile industries. SUBSTANCE : proposed cast iron contains the following constituents, mass-% : carbon, 2.8-3.6; silicon, 2.0-3.0; manganese, 0.6-1.0; magnesium, 0.005-0.01; calcium, 0.005-0.01; rare-earth metals, 0.2-0.4; copper, 0.02-0.04; barium, 0.003-0.005; zirconium, 1.0-2.0; chromium, 1.0-2.0; the remainder being iron. EFFECT : enhanced strength of cast iron. 1 tbl