Patent · US Active

High silicon bearing dual phase steels with improved ductility

US10131974B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

ArcelorMittal · LI

Inventors

Hyun Jo Jun · Clinton, US
Narayan S. Pottore · Hammond, US
Nina Michailovna Fonstein · Chicago, US

Key dates

Filing date	Nov 28, 2012
Grant date	Nov 20, 2018
Priority date	—
Expiry date	Mar 12, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C38/06
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A dual phase steel (martensite+ferrite) having a tensile strength of at least 980 MPa, and a total elongation of at least 15%. The dual phase steel may have a total elongation of at least 18%. The dual phase steel may also have a tensile strength of at least 1180 MPa. The dual phase steel may include between 0.5-3.5 wt. % Si, and more preferably between 1.5-2.5 wt. % Si.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.