| 摘要 |
FIELD: ferrous metallurgy, namely production of steel designed for making parts of internal combustion engines. ^ SUBSTANCE: steel contains carbon, silicon, manganese, chrome, cobalt, hafnium, calcium, copper and iron at next relation of components, mass %: carbon, 0.1 - 0.2; silicon, 0.01 - 0.05; manganese, 0.6 - 1.0; chrome, 0.15 - 0,45; cobalt, 0.5 - 1.0; hafnium, 3.0 - 4.0; calcium, 0.005 - 0.01; copper, 0.5 - 1.0; iron, the balance. ^ EFFECT: improved thermal stability of steel. ^ 1 tbl |
