High-strength steel with yield strength of 800 MPa and production method therefor
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United States of America Patent
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-
Mar 30, 2021
Grant Date -
Dec 7, 2017
app pub date -
Dec 8, 2015
filing date -
Dec 19, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A high-strength steel having a yield strength at a level of 800 MPa and a method of manufacturing the same, with the components and amounts thereof by weight percentage being: C: 0.06-0.14%, Si: 0.1-0.30%, Mn: 0.8-1.60%, Cr: 0.2-0.70%, Mo: 0.1-0.40%, Ni: 0-0.30%, Nb: 0.01-0.030%, Ti: 0.01-0.030%, V: 0.01-0.05%, B: 0.0005-0.0030%, Al: 0.02-0.06%, Ca: 0.001-0.004%, N: 0.002-0.005%, P≤0.02%, S≤0.01%, O≤0.008%, the balance of Fe and unavoidable impurities; wherein the above elements meet the following relationships: 0.40%
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International Classification(s)
- 2015 Application Filing Year
- C21D Class
- 776 Applications Filed
- 539 Patents Issued To-Date
- 69.46 % Issued To-Date
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- 0 Citation Count
- C21D Class
- 0 % this patent is cited more than
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