发明申请
US20100092331A1 WEATHER-RESISTANT HOT-ROLLED STEEL SHEET SUPERIOR HIGH-STRENGTH, AND MANUFACTURING METHOD 审中-公开
耐高温热轧钢板超高强度和制造方法

WEATHER-RESISTANT HOT-ROLLED STEEL SHEET SUPERIOR HIGH-STRENGTH, AND MANUFACTURING METHOD
摘要:
There are provided a high-strength hot-rolled steel sheet having excellent weather resistance used for containers and a method of manufacturing the same. A high-strength hot-rolled steel sheet having excellent weather resistance includes, by weight: C: 0.05 to 0.07%, Mn: 2.5% or less, Nb: 0.04 to 0.06%, Ti: 0.08 to 0.10%, Cu: 0.30 to 0.60%, Cr: 0.5 to 1.0%, and Ni: 0.15 to 0.30%, and the balance of Fe and other inevitable impurities. A method of manufacturing the hot-rolled steel sheet is also provided. A hot-rolled steel sheet provided has weather resistance by addition of Cu, Cr, and Ni and material characteristics of a tensile strength within the range of 800 to 900 MPa and a yield strength within the range of 700 to 800 MPa.
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