| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy absorptive member made of an aluminum alloy light in weight, high in energy absorptivity, having required strength or the like and suitable as a shock absorptive member for an automobile or the like. SOLUTION: In this energy absorptive member made of the aluminum alloy, when the breading extention of the gage length of 5 mm in the extruding direction of an aluminum alloy extruded material is defined asα(%) and 0.2% yield strength is defined asσ(MPs),α>=24 and (α×σ)>=6,000 are satisfied.
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