Invention Grant
US07780797B2 High strength thin steel excellent in hole expansibility, ductility and chemical treatment characteristics 有权
高强度薄钢具有优异的孔膨胀性,延展性和化学处理特性

High strength thin steel excellent in hole expansibility, ductility and chemical treatment characteristics
Abstract:
High strength hot rolled steel sheet having at least a 590 N/mm2 tensile strength and excellent in elongation and ability of phosphate coating, that is, high strength hot rolled steel sheet excellent in burring, elongation, and ability of phosphate coating having a tensile strength of 590 N/mm2 or more comprising a steel composition containing, by mass %, C: 0.02 to 0.08%, Si: 0.50% or less, Mn: 0.50 to 3.50%, P: 0.03% or less, S: 0.01% or less, Al: 0.15 to 2.0%, and the balance of iron and unavoidable impurities, satisfying Mn+0.5×Al
Information query
Patent Agency Ranking
0/0