FIELD: steel metallurgy.
SUBSTANCE: alloyed corrosion-resistant high-strength martensitic-austenitic-ferritic steels used for the manufacture of highly loaded parts in mechanical engineering. Steel contains components in the following ratio, wt.%: carbon 0.02-0.05, nitrogen 0.11-0.20, chromium 17.5-20.0, manganese 1.0-2.0, nickel 2, 0-3.0, vanadium 0.07-0.13, silicon 0.2-0.4, cerium 0.005-0.03, lanthanum 0.005-0.03, barium 0.005-0.02, iron and other impurities. The content of components in steel satisfies the following conditions: Nieqv=%Ni+0.1%Mn-0.01%Mn2+30%C+18%N=4.67÷8.36 and Creqv=%Cr+0.48%Si+2.3%V=17.76÷20.49.
EFFECT: increase in ductility and impact strength is ensured while maintaining high strength, which ensures increased operational reliability and an increase in the service life of structures made from this steel during their operation.
4 cl, 2 tbl
Title | Year | Author | Number |
---|---|---|---|
HIGH-CORROSION-RESISTANT STEELS OF THE TRANSITION CLASS | 2015 |
|
RU2576773C1 |
CORROSION-RESISTANT MARTENSITE AGEING STEEL | 2013 |
|
RU2532785C1 |
SEAMLESS HIGH-STRENGTH MARTENSITIC STEEL PIPE FOR CASING AND ITS MANUFACTURING METHOD | 2022 |
|
RU2798642C1 |
HIGH-STRENGTH CORROSION-RESISTANT STEEL | 2004 |
|
RU2271402C1 |
SEAMLESS HIGH-STRENGTH PIPE OF STEEL OF MARTENSITE GRADE FOR CASING STRINGS AND ITS PRODUCTION METHOD | 2021 |
|
RU2787205C2 |
HIGH-STRENGTH STRUCTURAL STEEL | 2020 |
|
RU2737903C1 |
HIGH-STRENGTH CORROSION-RESISTANT STEEL | 2012 |
|
RU2493285C1 |
HIGH STRENGTH CORROSION RESISTANT POWDER STEEL | 2020 |
|
RU2751064C1 |
HIGH-STRENGTH DISPERSION-HARDENING NITROGEN-CONTAINING CORROSION-RESISTANT AUSTENITIC STEEL | 2018 |
|
RU2704703C1 |
HIGH-STRENGTH CORROSION-RESISTANT WELDED STEEL | 2015 |
|
RU2586193C1 |
Authors
Dates
2023-11-02—Published
2023-03-03—Filed