MALLEABLE CAST IRON

摘要

FIELD: metallurgy. ^ SUBSTANCE: cast iron contains components in a following ratio, wt %: carbon 3.8-4.0; silicon 1.0-1.4; manganese 0.8-1.2; aluminium 0.3-0.4; niobium 0.3-0.4; nickel 2.2-2.4; boron 0.01-0.02; neodymium 0.2-0.4; praseodymium 0.2-0.4; iron - the rest. ^ EFFECT: hardening of cast iron. ^ 1 tbl