| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention relates to metallurgy field, particularly to contents of cast iron. It can be used in transportation equipment. Cast iron contains wt %: carbon 2.9-3.2; silicon 1.4-1.8; manganese 0.6-1.0; phosphorus 0.04-0.06; sulphur 0.01-0.03; boron 0.1-0.14; copper 2.8-3.0; chrome 0.3-0.5; niobium 0.2-0.3; selenium 0.001-0.002; iron - the rest. ^ EFFECT: hardening of cast iron. ^ 1 tbl |
