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AssigneesFurukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
InventorsYoichiro Bekki, Kazuhisa Kashiwazaki, Nobuaki Ohara, Noboru Hayashi
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There is disclosed an aluminum alloy extruded material for structural members of automotive bodies, which is composed of an aluminum alloy containing more than 2.6 wt % but 4.0 wt % or less of Si and more than 0.3 wt % but 1.5 wt % or less of Mg, further, (i) containing Mn, Zn, Cu, and Fe each in a given amount, or (ii) containing Zn, Cu, and Fe each in a given amount and containing at least one selected from among Mn, Cr, Zr, and V in a given amount, and the balance being made of Al and unavoidable impurities, which material has a given conductivity and a given melting start temperature. There is also disclosed a method for producing the extruded material, in which after an aluminum alloy ingot of the above composition is subjected to a homogenizing treatment at given conditions, it is cooled, heated again, and subjected to hot extrusion at given conditions. The extruded material is excellent in spot weldability and surface treatment property, such as the chemical conversion property and degreasing property, and it has high mechanical strength and ductility, and is excellent in impact absorbability and/or bendability.
An aluminum alloy extruded material for structural members of automotive bodies, which is composed of an aluminum alloy consisting essentially of more than 2.6% by weight but 4.0% by weight or less of Si, more than 0.3% by weight but 1.5% by weight or less of Mg, more than 0.3% by weight but 1.2% by weight or less of Mn, more than 0.3% by weight but 1.2% by weight or less of Zn, more than 0.2% by weight but 1.2% by weight or less of Cu, more than 0.1% by weight but 1.5% by weight or less of Fe, 50-500 ppm of Sr or Sb, and a balance being made of Al and unavoidable impurities, having a conductivity of 48% or less based on IACS and a melting point temperature of 570° C. or less, and said aluminum alloy extruded material contains at least one recycled material selected from the group consisting of scraps recycled from aluminum cans and scraps of automotive aluminum parts, as at least a part of the aluminum alloy,
An aluminum alloy extruded material for structural members of automotive bodies, which comprises an aluminum alloy containing more than 2.6% by weight but 4.0% by weight or less of Si, more than 0.3% by weight but 1.5% by weight or less of Mg, more than 0.3% by weight but 1.2% by weight or less of Zn, more than 0.3% by weight but 1.2% by weight or less of Cu, more than 0.1% by weight but 1.5% by weight or less of Fe, 50-500 ppm of Sr or Sb, and containing at least one selected from the group consisting of Mn in an amount of more than 0.01% by weight but 0.3% by weight or less, Cr in an amount of more than 0.01% by weight but 0.3% by weight or less, Zr in an amount of more than 0.01% by weight but 0.3% by weight or less, and V in an amount of more than 0.01% by weight but 0.3% by weight or less, and a balance being made of Al and unavoidable impurities, the alloy having a conductivity of 50% or less based on IACS and a melting start temperature of 570° C. or less, and said aluminum alloy extruded material contains at least one recycled material selected from the group consisting of scraps recycled from aluminum sashes and scraps of automotive aluminum parts, as at least a part of the aluminum alloy,
An aluminum alloy extruded material for structural members of automotive bodies, which comprises an aluminum alloy containing more than 2.6% by weight but 4.0% by weight or less of Si, more than 0.3% by weight but 1.5% by weight or less of Mg, more than 0.3% by weight but 1.2% by weight or less of Mn, more than 0.3% by weight but 1.2% by weight or less of Zn, more than 0.2% by weight but 1.2% by weight or less of Cu, and more than 0.1% by weight but 1.5% by weight or less of Fe, 50-500ppm of Sr or Sb, and a balance being made of Al and unavoidable impurities, having a conductivity of 48% or less based on IACS and a melting point temperature of 570° C. or less.
An aluminum alloy extruded material for structural members of automotive bodies, which comprises an aluminum alloy containing more than 2.6% by weight but 4.0% by weight or less of Si, more than 0.3% by weight but 1.5% by weight or less of Mg, more than 0.3% by weight but 1.2% by weight or less of Zn, more than 0.3% by weight but 1.2% by weight or less of Cu, and more than 0.1% by weight but 1.5% by weight or less of Fe, and containing at least one selected from the group consisting of Mn in an amount of more than 0.01% by weight but 0.3% by weight or less, Cr in an amount of more than 0.01% by weight but 0.3% by weight or less, Zr in an amount of more than 0.01% by weight but 0.3% by weight or less, and V in an amount of more than 0.01% by weight but 0.3% by weight or less, 50-500ppm of Sr or Sb, and a balance being made of Al and unavoidable impurities, the alloy having a conductivity of 50% or less based on IACS and a melting start temperature of 570° C. or less.
Dependencies are inferred from the claim text.