FIELD: metallurgy.
SUBSTANCE: invention refers to metallurgy and can be used for fabrication of equipment of oil and mine industry. Steel with upgraded hardness contains, mass %: carbon 0.1-0.2; silicon 0.2-0.4; manganese 16.0-20.0; chromium 13.0-17.0; nitrogen 0.05-0.1; copper 0.2-0.4; cerium 0.05-0.1; calcium 0.002-0.004; aluminium 0.1-0.2; vanadium 0.2-0.4; nickel 1.5-2.0; strontium 0.02-0.04; iron - the rest. Ultimate tensile strength of steel is 1300-1350 MPa.
EFFECT: upgraded tensile strength of steel.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| STEEL | 2006 |
|
RU2318069C1 |
| STAINLESS STEEL | 2007 |
|
RU2341584C2 |
| HOT ROLLED STAINLESS STEEL OF HIGH STRENGTH | 2007 |
|
RU2334823C1 |
| STRUCTURAL STEEL | 2006 |
|
RU2323272C2 |
| DIE STEEL | 2011 |
|
RU2445394C1 |
| STEEL | 2006 |
|
RU2325461C2 |
| LOW ALLOYED STEEL | 2006 |
|
RU2330097C1 |
| HOT-ROLLED STEEL | 2008 |
|
RU2355813C1 |
| STEEL | 2014 |
|
RU2556440C1 |
| CAST IRON | 2006 |
|
RU2319781C1 |
