发明授权
US06716390B2 Aluminum alloy extruded material for automotive structural members 失效
用于汽车结构件的铝合金挤压材料

  • 专利标题: Aluminum alloy extruded material for automotive structural members
  • 专利标题(中): 用于汽车结构件的铝合金挤压材料
  • 申请号: US09738048
    申请日: 2000-12-15
  • 公开(公告)号: US06716390B2
    公开(公告)日: 2004-04-06
  • 发明人: Yoichiro BekkiNoboru Hayashi
  • 申请人: Yoichiro BekkiNoboru Hayashi
  • 优先权: JP11-359950 20001217
  • 主分类号: C21C2102
  • IPC分类号: C21C2102
Aluminum alloy extruded material for automotive structural members
摘要:
An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32×(content of Fe (wt %))+0.097×(content of Si (wt %))+3.5×(content of Cr (wt %))+2.9×(content of Ti (wt %))≦1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.
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