Inexpensive automobile component and oil feed pipe having excellent salt corrosion resistance
US-2018031169-A1 · Feb 1, 2018 · US
Ferritic stainless steel sheet
US10821706B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10821706-B2 |
| Application number | US-201716302219-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 21, 2017 |
| Priority date | May 30, 2016 |
| Publication date | Nov 3, 2020 |
| Grant date | Nov 3, 2020 |
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- Title
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Abstract
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Disclosed is a ferritic stainless steel sheet including: a chemical composition containing, by mass %, C: 0.025% or less, Si: 0.01% to 2.0%, Mn: 0.01% to 1.0%, P: 0.050% or less, S: 0.010% or less, Cr: 10.5% to 20.0%, Al: 0.01% to 0.50%, Ni: 0.01% to 0.60%, Ti: 0.10% to 0.50%, and N: 0.025% or less, with the balance being Fe and inevitable impurities; and a coating layer including at least one coating layer selected from the group consisting of an Al coating layer, an Fe coating layer, and a Si coating layer on one or both sides thereof, in which the coating layer has a total thickness of 30 nm to 150 nm per side.
First claim
Opening claim text (preview).
The invention claimed is: 1. A ferritic stainless steel sheet comprising: a chemical composition containing, by mass %, C: 0.025% or less, Si: 0.01% to 2.0%, Mn: 0.01% to 1.0%, P: 0.010% to 0.050%, S: 0.001% to 0.010%, Cr: 10.5% to 20.0%, Al: 0.01% to 0.50%, Ni: 0.01% to 0.60%, Ti: 0.10% to 0.50%, and N: 0.003% to 0.025% or less, with the balance consisting of Fe and inevitable impurities; and a coating layer consisting of one, two, or three coating layers selected from the group consisting of an Al coating layer consisting of Al, an Fe coating layer consisting of Fe, and a Si coating layer consisting of Si on one or both sides thereof, wherein the coating layer has a total thickness of 30 nm to 150 nm per side. 2. The ferritic stainless steel sheet according to claim 1 , wherein the coating layer consists of the Fe coating layer. 3. The ferritic stainless steel sheet according to claim 1 , wherein the coating layer consists of the Fe coating layer and one or two coating layers selected from the group consisting of the Al coating layer and the Si coating layer, and the Fe coating layer being a lowermost layer. 4. The ferritic stainless steel sheet according to claim 1 , wherein the chemical composition further contains, by mass %, at least one selected from the group consisting of Cu: 0.01% to 0.80%, Mo: 0.01% to 3.0%, W: 0.01% to 3.0%, Nb: 0.01% to 0.20%, V: 0.01% to 0.20%, Zr: 0.01% to 0.10%, Hf: 0.01% to 0.10%, and REM: 0.01% to 0.15%. 5. The ferritic stainless steel sheet according to claim 2 , wherein the chemical composition further contains, by mass %, at least one selected from the group consisting of Cu: 0.01% to 0.80%, Mo: 0.01% to 3.0%, W: 0.01% to 3.0%, Nb: 0.01% to 0.20%, V: 0.01% to 0.20%, Zr: 0.01% to 0.10%, Hf: 0.01% to 0.10%, and REM: 0.01% to 0.15%. 6. The ferritic stainless steel sheet according to claim 3 , wherein the chemical composition further contains, by mass %, at least one selected from the group consisting of Cu: 0.01% to 0.80%, Mo: 0.01% to 3.0%, W: 0.01% to 3.0%, Nb: 0.01% to 0.20%, V: 0.01% to 0.20%, Zr: 0.01% to 0.10%, Hf: 0.01% to 0.10%, and REM: 0.01% to 0.15%. 7. The ferritic stainless steel sheet according to claim 1 , wherein the coating layer is a vapor-deposited layer.
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Classifications
during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title
Hot rolling · CPC title
Very low carbon steels, i.e. having a carbon content of less than 0,01% · CPC title
on metallic substrates or on substrates of boron or silicon · CPC title
one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title
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- What does patent US10821706B2 cover?
- Disclosed is a ferritic stainless steel sheet including: a chemical composition containing, by mass %, C: 0.025% or less, Si: 0.01% to 2.0%, Mn: 0.01% to 1.0%, P: 0.050% or less, S: 0.010% or less, Cr: 10.5% to 20.0%, Al: 0.01% to 0.50%, Ni: 0.01% to 0.60%, Ti: 0.10% to 0.50%, and N: 0.025% or less, with the balance being Fe and inevitable impurities; and a coating layer including at least one …
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C21D9/46. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 03 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).