| 摘要 |
FIELD: manufacture of different types of cutting tools. ^ SUBSTANCE: steel contains, mass %: carbon, 1.0 - 1.5; silicon, 0.3 - 0.5; manganese, 1.0 - 1.5; chrome, 4.0 - 6.0; vanadium, 1.0 - 1.5; titanium, 8.0 - 12.0; nitrogen, 0.15 - 0.25; zirconium, 1.0 - 1.5; cobalt, 1.0 - 1.5; iron, the balance. ^ EFFECT: increased hardness of steel. ^ 1 tbl |
