Title:
STEEL MATERIAL FOR LIQUID AMMONIA TRANSPORT AND STORAGE, AND MANUFACTURING METHOD FOR STEEL MATERIAL FOR LIQUID AMMONIA TRANSPORT AND STORAGE
Document Type and Number:
WIPO Patent Application WO/2021/100336
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a steel material for liquid ammonia transport and storage, which is suitably used in structural members of a large structure such as a plant or tank used in a liquid ammonia environment and and which has advantageous manufacturability and excellent ammonia SCC resistance; and a manufacturing method for the steel material for liquid ammonia transport and storage. This steel material for liquid ammonia transport and storage has a prescribed component composition and has a degree of (Cu+Sb) segregation of less than 15. Here, the degree of (Cu+Sb) segregation is defined by formula (1). (1) [degree of (Cu+Sb) segregation] = [(Cu+Sb) concentration of segregated portion]/[average (Cu+Sb) concentration]
Inventors:
SAMUSAWA ITARU (JP)
SHIMAMURA JUNJI (JP)
IGI SATOSHI (JP)
SHIMAMURA JUNJI (JP)
IGI SATOSHI (JP)
Application Number:
PCT/JP2020/037648
Publication Date:
May 27, 2021
Filing Date:
October 02, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/02; B22D11/00; C22C38/00; C22C38/60
Foreign References:
| JP2006336065A | 2006-12-14 | |||
| JP2002003983A | 2002-01-09 | |||
| JP2004300493A | 2004-10-28 | |||
| JP2004143555A | 2004-05-20 | |||
| JP2015167965A | 2015-09-28 | |||
| JPH11179498A | 1999-07-06 | |||
| JP2019094563A | 2019-06-20 | |||
| JPH11131178A | 1999-05-18 | |||
| JPH08269537A | 1996-10-15 | |||
| JPS57149421A | 1982-09-16 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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