Steel material and mold
US-2024133005-A1 · Apr 25, 2024 · US
Austenitic stainless steel tube
US9612008B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9612008-B2 |
| Application number | US-201214129335-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 28, 2012 |
| Priority date | Jun 28, 2011 |
| Publication date | Apr 4, 2017 |
| Grant date | Apr 4, 2017 |
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Abstract
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There is provided an austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×10 14 /m 2 or higher, on the inner surface side of the steel tube. The crystal grain size of the steel tube is preferably 50 μm or smaller. The steel tube of the present invention is suitable as a steel tube used in power-generating plants.
First claim
Opening claim text (preview).
What is claimed is: 1. An austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×10 14 /m 2 or higher, on the inner surface of the steel tube. 2. The austenitic stainless steel tube according to claim 1 , wherein the grain size of the steel tube is 50 μm or smaller. 3. The austenitic stainless steel tube according to claim 1 , wherein the steel tube is used as a member for a power-generating plant.
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- What does patent US9612008B2 cover?
- There is provided an austenitic stainless steel tube containing, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, wherein the steel tube has a metal micro-structure, in which an average dislocation density, which is determined by XRD measurement using a Co tube, is 3.0×10 14 /m 2 or higher, on the inner surface side of the steel tube. The crystal grain size of the steel tube is preferably …
- Who is the assignee on this patent?
- Nishiyama Yoshitaka, Yonemura Mitsuharu, Nippon Steel & Sumitomo Metal Corp
- What technology area does this patent fall under?
- Primary CPC classification C21D6/004. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 04 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).