| 简介 |
FIELD : metallurgy, iron and steel industry.SUBSTANCE : invention refers to metallurgy, particularly to compositions of iron. Iron contains elements at a following ratio, mas.% : carbon 2.7-3.1; silicon 1.7-2.1; manganese 0.7-1.1; magnesium 0.005-0.01; REE (rare earth elements) 0.05-0.1; nickel 0.5-0.9; niobium 0.15-0.3; copper 0.9-1.3; zirconium 0.07-0.15; nitrogen 0.07-0.15; molybdenum 1.7-2.5; iron - the rest. Implementation of the invention upgrades iron strength.EFFECT : producing iron of upgraded strength.1 tbl |
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