HOT-RESISTANT SPARINGLY ALLOYED STEEL Russian patent published in 2015 - IPC C22C38/48 

FIELD: metallurgy.

SUBSTANCE: steel contains carbon, silicon, manganese, chromium, nickel, niobium, nitrogen, phosphorous, sulphur, iron and inevitable admixtures at following ratio of components, wt %: carbon 0.4-0.5, silicon 1.0-2.0, manganese 4.5-5.5, chromium 24.0-26.0, nickel 11.0-13.0, niobium 1.2-1.5, nitrogen 0.2-0.4, phosphorous ≤0.02, sulphur ≤0.02, iron and inevitable admixtures - rest.

EFFECT: increased strength and plastic characteristics at high temperatures upon keeping level of specific heating capacity, temperature coefficient of linear extension and sparing alloying as per nickel.

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