DI-PHASE AUSTENITE-FERRITE STEEL Russian patent published in 1998 - IPC

FIELD: metallurgy. SUBSTANCE: steel comprises, mas.%: carbon, up to 0.03; chromium, 10-20; nickel, 6-12; molybdenum, 1-5; cobalt, 2-8; aluminium, 1-5; calcium or cerium, 0.01-0.1; ferrum, the balance. Desired steel is high-strength, corrosion-resistant material which has after its hardening high plastic di-phase austenite-ferrite structure. Due to this structure said material is able to be exposed by high summary compression at cold plastic deformation, also said material being affected by deformation ageing has high strength and high elastic properties. EFFECT: improved quality of desired product. 1 tbl