| 摘要 |
FIELD: steel industry and oil and gas production. ^ SUBSTANCE: steel of invention is composed of, wt %: carbon 1.0-1.2, manganese 24.0-26.0, chromium 2.5-5.0, aluminum 4.0-6.0, boron 0.005-0.1, yttrium 0.005-0.05, cerium 0.005-0.05, vanadium 0.08-0.12, niobium 0.01-0.04, calcium 0.001-0.01, and iron - the balance. ^ EFFECT: achieved high mechanical properties and low magnetic permeability, whose value does not change with drilling equipment working temperature range. ^ 6 tbl |
