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公开(公告)号:US20050028894A1
公开(公告)日:2005-02-10
申请号:US10502659
申请日:2003-02-03
摘要: A metal sheet for a motor vehicle body outer panel, having a thickness ranging between 0.8 and 1.2 mm, containing, in wt. %, Fe 0.25-0.40 and preferably 0.25-0.35; Si 0.90-1.20 and preferably 0.95-1.10; Cu 0.10-0.25 and preferably 0.15-0.20; Mg 0.35-0.50 and preferably 0.40-0.50; Mn 0.05-0.20 and preferably 0.08-0.15; other elements 180 MPa can be obtained on the body stamping part after the paint has been cured. The sheet of the invention enables a reduction in the thickness of parts while satisfying all the other required properties.
摘要翻译: 一种用于机动车身外板的金属片,其厚度范围在0.8至1.2mm之间, %,Fe 0.25-0.40,优选0.25-0.35; Si 0.90-1.20,优选0.95-1.10; Cu 0.10-0.25,优选0.15-0.20; Mg 0.35-0.50,优选0.40-0.50; Mn 0.05-0.20,优选0.08-0.15; 其他元素总共<0.05,总共<0.15,其余为铝。 在固溶热处理后,淬火,预回火或回复,并在室温下熟化3周至6个月,L R0.2方向屈服强度小于160MPa,优选小于150MPa。 在涂料固化后,可以在车身冲压件上获得屈服强度> 180MPa。 本发明的片材能够在满足所有其它所需性能的同时减少部件的厚度。