Martensitic stainless steel
US-10655195-B2 · May 19, 2020 · US
Martensitic stainless steel sheet
US10988825B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10988825-B2 |
| Application number | US-201716090649-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2017 |
| Priority date | Apr 12, 2016 |
| Publication date | Apr 27, 2021 |
| Grant date | Apr 27, 2021 |
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- Title
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Abstract
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A martensitic stainless steel has a chemical composition containing, by mass %, C: 0.030% or more and less than 0.20%, Si: 0.01% or more and 2.0% or less, Mn: 0.01% or more and 3.0% or less, P: 0.050% or less , S: 0.010% or less, Cr: 10.0% or more and 16.0% or less, Ni: 0.01% or more and 0.80% or less, Al: 0.001% or more and 0.50% or less, Zr: 0.005% or more and 0.50% or less, and N: 0.030% or more and less than 0.20%, with the balance consisting of Fe and inevitable impurities.
First claim
Opening claim text (preview).
The invention claimed is: 1. A martensitic stainless steel sheet comprising a chemical composition consisting of, by mass %, C: 0.030% or more and less than 0.20%, Si: 0.01% or more and 2.0% or less, Mn: 0.01% or more and 3.0% or less, P: 0.050% or less, S: 0.010% or less, Cr: 10.0% or more and 16.0% or less, Ni: 0.01% or more and less than 0.20%, Al: 0.001% or more and 0.50% or less, Zr: 0.005% or more and 0.50% or less, and N: 0.030% or more and less than 0.20%, and optionally at least one selected from the group consisting of Cu: 0.01% or more and 3.0% or less, Mo: 0.01% or more and 0.50% or less, Co: 0.01% or more and 0.50% or less, Ti: 0.001% or more and 0.50% or less, Nb: 0.001% or more and 0.05% or less, V: 0.001% or more and 0.50% or less, B: 0.0002% or more and less than 0.0030%, Ca: 0.0002% or more and 0.0100% or less, and Mg: 0.0002% or more and 0.0100% or less, with the balance consisting of Fe and inevitable impurities, wherein the martensitic stainless steel sheet has a tensile strength of 1300 MPa or more, an elongation of 7.0% or more, an ultimate deformability of 0.5 or more, and a structure of the martensitic stainless steel sheet contains, in a volume ratio, 90% or more of martensite.
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Classifications
during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title
- C22C38/58Primary
with more than 1.5% by weight of manganese · CPC title
Cold rolling · CPC title
Ferrous alloys, e.g. steel alloys (cast-iron alloys C22C37/00) · CPC title
containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title
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Frequently asked questions
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- What does patent US10988825B2 cover?
- A martensitic stainless steel has a chemical composition containing, by mass %, C: 0.030% or more and less than 0.20%, Si: 0.01% or more and 2.0% or less, Mn: 0.01% or more and 3.0% or less, P: 0.050% or less , S: 0.010% or less, Cr: 10.0% or more and 16.0% or less, Ni: 0.01% or more and 0.80% or less, Al: 0.001% or more and 0.50% or less, Zr: 0.005% or more and 0.50% or less, and N: 0.030% or …
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22C38/58. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 27 2021 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).