IRON

摘要

FIELD: metallurgy. ^ SUBSTANCE: iron contains, wt %: carbon 3.85-4.05; silicon 1.95-2.2; manganese to 0.5; chromium to 0.1; magnesium 0.03-0.06; lanthanum 0.001-0.01; calcium 0.002-0.007; aluminium 0.003-0.01; sulphur to 0.022, phosphorus to 0.1; iron - the rest. ^ EFFECT: eliminating shrinking defects in casts. ^ 3 tbl