Steel sheet pile and method for manufacturing the same
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United States of America Patent
Stats
-
Sep 11, 2018
Grant Date -
Nov 5, 2015
app pub date -
Mar 24, 2014
filing date -
Mar 28, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a steel sheet pile according to the present invention, a carbon equivalent CEN is 0.260 to 0.500, a structure includes a ferrite, a pearlite, a Widmanstätten ferrite, and a precipitate, the precipitate is one or both of Nb carbonitride and V carbonitride, a total number density of the precipitate is 0.10 to 0.30 pieces/μm2, a total area ratio of the ferrite and the pearlite is 70% or more, an area ratio of the Widmanstätten ferrite is 1% or more, an average grain size of the ferrite and the pearlite is 10 to 80 μm, and a yield strength is 460 MPa or more.
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International Classification(s)
- 2014 Application Filing Year
- C21D Class
- 586 Applications Filed
- 448 Patents Issued To-Date
- 76.46 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C21D Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 11, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 11, 2030 |
