High silicon bearing dual phase steels with improved ductility

摘要

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.