Title:
1500 MPA-GRADE STEEL WITH HIGH PRODUCT OF STRENGTH AND ELONGATION FOR VEHICLES AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/019220
Kind Code:
A1
Abstract:
Provided are a 1500 MPa-grade steel with a high product of strength and elongation for vehicles and a manufacturing method therefor. The mass percentages of the chemical elements thereof are: 0.1-0.3% of C, 0.1-2.0% of Si, 7.5-12% of Mn, 0.01-2.0% of Al, and the balance of iron and other inevitable impurities. The microstructure of the steel with a high product of strength and elongation for vehicles is austenite + martensite + ferrite or austenite + martensite. The steel for vehicles can reach a grade of 1500 MPa, and has a product of strength and elongation of not less than 30 GPa%.
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Inventors:
ZHANG YULONG (CN)
HAN QIHANG (CN)
WANG LI (CN)
HAN QIHANG (CN)
WANG LI (CN)
Application Number:
PCT/CN2017/094247
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/04; C21D1/26; C21D6/00; C21D8/02; C22C38/02; C22C38/06; C22C38/12; C22C38/14; C22C38/18
Domestic Patent References:
| WO2012031771A1 | 2012-03-15 |
Foreign References:
| CN102912219A | 2013-02-06 | |||
| CN102758133A | 2012-10-31 | |||
| CN101638749A | 2010-02-03 | |||
| CN102925790A | 2013-02-13 | |||
| CN106244918A | 2016-12-21 |
Other References:
See also references of EP 3492618A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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