CAST IRON

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FIELD : metallurgy.SUBSTANCE : cast iron contains components in a following ratio, wt % : carbon 3.1-3.3; silicon 1.9-2.3; manganese 0.2-0.3; chrome 0.1-0.3; titanium 0.01-0.016; rare-earth metals 0.18-0.22; aluminium 0.01-0.012; calcium 0.002-0.004; copper 1.9-2.3; tungsten 0.6-0.8; iron - the rest.EFFECT : fortification of cast iron.1 tbl