STEEL, PRODUCT MADE FROM SUCH STEEL, AND METHOD OF ITS PRODUCTION Russian patent published in 2020 - IPC C21D8/02 C21D7/06 C22C38/52 C22C38/10 C22C38/58 C22C38/54 

FIELD: metallurgy.

SUBSTANCE: steel, characterized by that its composition, wt %, is: 10.0≤Ni≤24.5; 1.0≤Mo≤12.0; 1.0≤Co≤ 25.0; 20.0≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0; Co+Mo≥20.0; Ni+Co+Mo≥29; trace amounts≤Al≤4.0; trace amounts≤Ti≤0.1; trace amounts≤N≤0.0050; trace amounts≤ Si≤2.0; trace amounts≤Mn≤4.0; trace amounts≤C≤0.03; trace amounts≤S≤0.0020; trace amounts≤P≤0.005; trace amounts≤B≤0.01; trace marks≤H≤0.0005; trace amounts≤O≤0.0025; trace amounts≤Cr≤5.0; trace amounts≤Cu≤2.0; trace amounts≤W≤4.0; trace amounts≤Zr≤4.0; trace amounts≤Ca≤0.1; trace amounts≤Mg≤0.1; trace amounts≤Nb≤4.0; trace amounts≤V≤4.0; trace amounts≤Ta≤4.0; residue is iron and unavoidable impurities.

EFFECT: technical result is production of steel with improved mechanical properties.

35 cl, 3 dwg, 7 tbl