High strength steel sheet excellent in formability

Details High strength steel sheet excellent in formability High strength steel sheet excellent in formability

2011-04-12

2011-04-12

Yee, Deborah (Department: 1733)

Metal treatment

Stock

Ferrous

C148S330000, C148S331000, C428S659000, C428S653000

Reexamination Certificate

active

07922835

ABSTRACT:
A high strength steel sheet excellent in formability which has a chemical composition in mass %: C: 0.03 to 0.20%, Si: 0.005 to 0.3%, Mn: 1.0 to 3.1%, P: 0.001 to 0.06%, S: 0.001 to 0.01%, N: 0.0005 to 0.01%, Al: 0.2 to 1.2%, Mo≦0.5%, and the balance: Fe and inevitable impurities, with the proviso that the values of mass % for Si and Al satisfy the following formula (1): (0.0012×[objective value of TS]−0.29−[Si])/2.45<Al<1.5−3×[Si] . . . (1) wherein [objective value of TS] represents a design strength value for the steel sheet in an Mpa unit, and has a metal structure containing ferrite and martensite. The above high strength steel sheet is also excellent in formability and the capability of being chemically treated and that of being hot-dip zinc sheeted.

REFERENCES:
patent: 0748874 (1996-12-01), None
patent: 0750049 (1996-12-01), None
patent: 0796928 (1997-09-01), None
patent: 1154028 (2001-11-01), None
patent: 1431406 (2004-06-01), None
patent: 57-155329 (1982-09-01), None
patent: 61-157625 (1986-07-01), None
patent: 05-247586 (1993-09-01), None
patent: 10-130776 (1998-05-01), None
patent: 2000256788 (2000-09-01), None
patent: 2000-345288 (2000-12-01), None
patent: 2001-234281 (2001-08-01), None
patent: 2003-105513 (2003-04-01), None
patent: 2003-193192 (2003-07-01), None
patent: 2003-239040 (2003-08-01), None
Computer-generated English translation of Japanese patent 2001-234281, Fujita Nobuhiro et al. , Aug. 28, 2001.
Computer-generated English translation of Japanese patent 2000-345288, Kusumi Kazuhisa et al., Dec. 12, 2000.
Machine-English translation of Japanese patent 2003-105513, Fujita Nobuhiro et al. , Apr. 9, 2003.
Olaf Maid et al., Einfluss der Hrstellungsbedingungen von Wrm- und Kltband aud die Gefugeausbildung und die mechanischen eigenschaften von Dalphasen- Stahl, Stahl und Eisen, vol. 108, No. 8, Apr. 18, 1988, pp. 31-36.

Affiliated with

Also associated with

Rating

High strength steel sheet excellent in formability does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High strength steel sheet excellent in formability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength steel sheet excellent in formability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2623874