HIGH STRENGTH CORROSION RESISTANT POWDER STEEL Russian patent published in 2021 - IPC C22C38/52 C22C33/02 

FIELD: iron and steel industry.

SUBSTANCE: invention relates to the field of ferrous metallurgy, namely to the production of powder corrosion-resistant martensitic-aging steel used in technologies for the additive production of power elements of gas turbine engines operated at temperatures from -70 to +550°C. Steel contains components in the following ratio, weight percentage: chromium 12.50-13.50, nickel 4.50-5.50, molybdenum 3.50-4.50, cobalt 8.50-9.50, manganese no more than 0.30, silicon no more than 0.10, niobium 0.08-0.15, yttrium no more than 0.02, lanthanum no more than 0.02, carbon no more than 0.02, sulfur no more than 0.01, oxygen no more than 0.06, iron the rest. Steel has a tensile strength of no less than 1400 MPa, a yield strength of no less than 1170 MPa, a relative elongation of no less than 14%, a transverse narrowing of no less than 50%.

EFFECT: new high strength steel is obtained.

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