Invention Grant
- Patent Title: High strength hot rolled or cold rolled and annealed steel and method of producing it
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Application No.: US16967233Application Date: 2019-02-05
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Publication No.: US11884990B2Publication Date: 2024-01-30
- Inventor: Joost Willem Hendrik Van Krevel , Nieves Cabanas Poy
- Applicant: TATA STEEL NEDERLAND TECHNOLOGY B.V.
- Applicant Address: NL Velsen-Noord
- Assignee: TATA STEEL NEDERLAND TECHNOLOGY B.V.
- Current Assignee: TATA STEEL NEDERLAND TECHNOLOGY B.V.
- Current Assignee Address: NL Velsen-Noord
- Agency: Vorys, Sater, Seymour and Pease LLP
- Priority: EP 155630 2018.02.07
- International Application: PCT/EP2019/052809 2019.02.05
- International Announcement: WO2019/154819A 2019.08.15
- Date entered country: 2020-08-04
- Main IPC: C21D9/52
- IPC: C21D9/52 ; C21D9/46 ; C21D8/02 ; C21D6/00 ; C22C38/14 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C22C38/12
Abstract:
A steel strip or sheet having a complex phase microstructure including one or more of ferrite, carbide free bainite, martensite and/or retained austenite in its microstructure including:
0.16-0.25 wt. % C;
2.3-4.00 wt. % Mn;
5-50 ppm B;
5-100 ppm N;
0.001-1.10 wt. % Al tot;
0.05-1.10 wt. % Si;
0-0.04 wt. % Ti;
0-0.10 wt. % Cu;
0-0.10 wt. % Mo;
0-0.10 wt. % Ni;
0-0.20 wt. % V;
0-0.05 wt. % P;
0-0.05 wt. % S;
0-0.10 wt. % Sn;
0-0.025 wt. % Nb
0-0.025 wt% Ca;
remainder iron and inevitable impurities.
0.16-0.25 wt. % C;
2.3-4.00 wt. % Mn;
5-50 ppm B;
5-100 ppm N;
0.001-1.10 wt. % Al tot;
0.05-1.10 wt. % Si;
0-0.04 wt. % Ti;
0-0.10 wt. % Cu;
0-0.10 wt. % Mo;
0-0.10 wt. % Ni;
0-0.20 wt. % V;
0-0.05 wt. % P;
0-0.05 wt. % S;
0-0.10 wt. % Sn;
0-0.025 wt. % Nb
0-0.025 wt% Ca;
remainder iron and inevitable impurities.
Public/Granted literature
- US20210025024A1 HIGH STRENGTH HOT ROLLED OR COLD ROLLED AND ANNEALED STEEL AND METHOD OF PRODUCING IT Public/Granted day:2021-01-28
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