High-strength austenitic stainless steel and manufacturing method thereof

EP4606923A4Pending Publication Date: 2026-04-08POHANG IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-04
Publication Date
2026-04-08

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Abstract

A high-strength austenitic stainless steel according to an embodiment comprises 0.05% to 0.1% of C, 0.1% to 1.0% of Si, 1.0% to 5.0% of Mn, less than 0.05% of P, less than 0.03% of S, 14.0% to 18.0% of Cr, 1.0% to 5.0% of Ni, 0.1% to 2.0% of Cu, 0.1% to 0.2% of N, and the balance being Fe and inevitable impurities, and may have a diameter deviation of 2 or smaller between crystal grains in the thickness direction.
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Citation Information

Patent Citations

  • Low-ni austenitic stainless steel with excellent hot workability and hydrogen embrittlement resistance

    EP3674434A1

  • Austenitic stainless steel with excellent corrosion resistance of welded part

    EP3978642A1

  • Austenitic stainless steel having improved strength, and method for manufacturing same

    EP3978643A2

  • Austenitic stainless steel and its production method

    JP2008038191A

  • High-nitrogen austenitic stainless steel and method for manufacturing same

    WO2019093786A1