| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: iron contains elements at a following ratio, mas.% carbon 2.7-3.3; silicon 1.0-1.7; manganese 1.0-1.7; titanium 0.05-0.1; zirconium 0.05-0.1; calcium 0.005-0.01; niobium 0.5-1.0; boron 0.04-0.08; copper 0.9-1.3; aluminium 0.05-0.1; nitrogen 0.05-0.1; iron - the rest. ^ EFFECT: upgraded hardness of iron. ^ 1 tbl |
