Steel for pressure vessels with excellent resistance to high-temperature tempering heat treatment and post-weld heat treatment and manufacturing method therefor
US-2020071798-A1 · Mar 5, 2020 · US
Steel plate for pressure vessel with excellent cryogenic toughness and excellent ductility and manufacturing method thereof
US12234526B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12234526-B2 |
| Application number | US-201917286409-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 8, 2019 |
| Priority date | Oct 26, 2018 |
| Publication date | Feb 25, 2025 |
| Grant date | Feb 25, 2025 |
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- Title
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Abstract
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Provided are a steel plate for a pressure vessel with excellent cryogenic toughness and excellent ductility, and a manufacturing method thereof. The steel plate for a pressure vessel of the present invention comprises, in weight %, 0.05 to 0.15% of C; 0.20 to 0.40% of Si; 0.3 to 0.6% of Mn; 0.001 to 0.05% of Al; 0.012% or less of P; 0.015% or less of S; 4.0 to 5.0% of Ni; 0.001 to 0.10% of In; and the balance being Fe and unavoidable impurities, wherein a steel microstructure consists of 15 to 80 area % of tempered bainite and the balance being tempered martensite.
First claim
Opening claim text (preview).
The invention claimed is: 1. A steel plate for a pressure vessel, consisting of: in weight %, 0.05 to 0.15% of C, 0.20 to 0.40% of Si, 0.3 to 0.6% of Mn, 0.001 to 0.05% of Al, 0.012% or less of P, 0.015% or less of S, 4.0 to 5.0% of Ni, 0.05 to 0.08% of In, a balance of Fe, and unavoidable impurities, wherein a steel microstructure is comprised of 15 to 80 area % of tempered bainite and a balance tempered martensite. 2. The steel plate for a pressure vessel of claim 1 , wherein the In is contained in a range of 0.07 to 0.08%.
Assignees
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Classifications
during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title
Recycling · CPC title
Metal working processes, e.g. deep drawing, stamping or cutting · CPC title
Steels · CPC title
- C22C38/08Primary
containing nickel {(C22C38/105 takes precedence)} · CPC title
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- What does patent US12234526B2 cover?
- Provided are a steel plate for a pressure vessel with excellent cryogenic toughness and excellent ductility, and a manufacturing method thereof. The steel plate for a pressure vessel of the present invention comprises, in weight %, 0.05 to 0.15% of C; 0.20 to 0.40% of Si; 0.3 to 0.6% of Mn; 0.001 to 0.05% of Al; 0.012% or less of P; 0.015% or less of S; 4.0 to 5.0% of Ni; 0.001 to 0.10% of In; …
- Who is the assignee on this patent?
- Posco, Posco Holdings Inc
- What technology area does this patent fall under?
- Primary CPC classification C22C38/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 25 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).