STEEL

摘要

FIELD: metallurgy. ^ SUBSTANCE: proposed steel contains, in wt %: carbon - 0.1-0.15; silicon - 0.4-0.6; manganese - 0.7-1.1; chromium 4.5-6.0; yttrium - 0.01-0.02; copper - 0.7-1.1; calcium - 0.001-0.002; nickel - 1.1-1.5; niobium - 0.4-0.6; aluminium - 0.1-0.15; iron making the rest. ^ EFFECT: higher strength. ^ 1 tbl