High-strength austenitic stainless steel and method for manufacturing the same
By controlling the composition and micronization process, the problem of insufficient yield strength and elongation of high-strength austenitic stainless steel after reducing Ni content has been solved, realizing the manufacture of austenitic stainless steel with high strength and high elongation, and reducing manufacturing costs.
CN122206818APending Publication Date: 2026-06-12POHANG IRON & STEEL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POHANG IRON & STEEL CO LTD
- Filing Date
- 2024-12-05
- Publication Date
- 2026-06-12
Smart Images
Figure CN122206818A_ABST
Abstract
The high-strength austenite stainless steel according to one example of the present application contains, in mass%, C: 0.01% or more and 0.1% or less, Si: 0.1% or more and 1% or less, P: less than 0.05%, S: less than 0.03%, Mn: 1% or more and 5% or less, Ni: 1% or more and 5% or less, Cr: 15.0% or more and 18.0% or less, Cu: 0.1% or more and 2% or less, N: 0.1% or more and 0.2% or less, Nb: 0.15% or more and 0.25% or less, the balance of Fe and inevitable impurities, satisfies the following formula (1), and can satisfy the following formula (2). Formula (1): [Ni] + 0.8[Cu] + 0.5([Mn] + [Cr]) + 16([C] + [N]) ≤ 20; Formula (2): ([N] + 1.8[Nb]) / (0.01[Cr]) ≥ 2.6 (wherein [Ni], [Cu], [Mn], [Cr], [C], [N] and [Nb] represent the mass% of each element)
Need to check novelty before this filing date? Find Prior Art