초록 ▼

Austenitic steel contains from 0.01 to 0.04% by weight of carbon, from 21.00 to 24.00% by weight of chromium, from 0.25 to 5 0.65% by weight of silicon, from 0.25 to 0.70% by weight of manganese, from 1.00 to 1.40% by weight of nitrogen, the balance being iron, the total content of ferrite-forming c

Austenitic steel contains from 0.01 to 0.04% by weight of carbon, from 21.00 to 24.00% by weight of chromium, from 0.25 to 5 0.65% by weight of silicon, from 0.25 to 0.70% by weight of manganese, from 1.00 to 1.40% by weight of nitrogen, the balance being iron, the total content of ferrite-forming components in the steel, namely, of silicon and chromium, and the total content of austenite-forming components therein, namely, of carbon, 10 nitrogen and manganese, obeying the following condition:where [Si], [Cr], [C], [N], [Mn] is the content in the steel of silicon, chromium, carbon, nitrogen, and manganese, respectively, expressed in % by weight.

대표청구항 ▼

1. Steel containing carbon, chromium, silicon, manganese, nitrogen and iron, wherein said steel contains said components in % by weight as follows:the silicon, chromium, carbon, nitrogen and manganese, being present in the steel in respective amounts such thatwherein [Si], [Cr], [C], [N], [Mn] repre

1. Steel containing carbon, chromium, silicon, manganese, nitrogen and iron, wherein said steel contains said components in % by weight as follows:the silicon, chromium, carbon, nitrogen and manganese, being present in the steel in respective amounts such thatwherein [Si], [Cr], [C], [N], [Mn] represent the content in the steel of silicon, chromium, carbon, nitrogen, and manganese, respectively, in % by weight. 2. Steel according to claim 1, wherein said steel has a single-phase austenitic structure, a yield point σ 0.2 from 700 to 900 MPa, and a breaking point σ B from 1100 to 1250 MPa. 3. Steel according to claim 1, wherein said steel has a single-phase structure obtained after water quenching at a temperature of from 1190 to 1230° C. 4. Steel according to claim 1, wherein said steel has a single-phase structure obtained after water quenching at a temperature of from 1190 to 2300° C. and subsequent tempering at a temperature of from 400 to 430° C. for 3 to 3.5 hours with subsequent cooling in air. 5. Steel according to claim 1, wherein the manganese is present in the steel in an amount of 0.19 to 0.22 wt %. 6. A steel consisting essentially of iron, ferrite-forming components and austenite-forming components, the ferrite-forming components comprising silicon and chromium, the austenite-forming components comprising carbon, nitrogen and manganese, the ferrite-forming components and austenite-forming components being present in the steel in respective amounts such that:wherein the ferrite-forming and austenite-forming components are present in the steel in respective amounts such that the steel has a single-phase austenitic structure, a yield point σ 0.2 from 700 to 900 MPa, and a breaking point σ B from 1100 to 1250 MPa, with the carbon being present in the steel in an amount of 0.01 to 0.04 wt %, the chromium being present in the steel in an amount of 21.00 to 24.00 wt %, the silicon being present in the steel in an amount of 0.25 to 0.65 wt %, the manganese being present in the steel in an amount of up to 0.70 wt %, and the nitrogen being present in the steel in an amount of 1.00 to 1.4 wt %. 7. The steel according to claim 6, wherein the manganese is present in the steel in an amount of 0.19 to 0.22 wt %. 8. Steel according to claim 6, wherein said steel has a single-phase structure obtained after water quenching at a temperature of from 1190 to 1230° C. 9. Steel according to claim 6, wherein said steel has a single-phase structure obtained after water quenching at a temperature of from 1190 to 1230° C. and subsequent tempering at a temperature of from 400 to 430° C. for 3 to 3.5 hours with subsequent cooling in air.