CAST IRON Russian patent published in 1998 - IPC

FIELD: metallurgy, particular, spheroidal graphite cast iron for production of castings possessing in initial state of high ductility and strength. SUBSTANCE: the offered cast iron contains, wt.%: carbon 2.7-3,8; silicon 2.1-2.9; manganese 0.15-0.45; copper 0.1-0.35; nickel 0.4-1.0; magnesium 0.03-0.08; the balance, iron. EFFECT: balanced ratio of strength and ductility of cast iron required in manufacture of highly loaded vital parts of machines, for instance, of gear wheels. 1 tbl