AUTOMOTIVE UNDERBODY PART AND METHOD FOR MANUFACTURING SAME

The present invention provides an aluminum-alloy automotive underbody part having adequate strength even when using a part forged from an aluminum alloy casting material, and an effective method for manufacturing said underbody part. The present invention pertains to an automotive underbody part characterized in being an aluminum alloy forged part in which the average inverse of the Schmid factor, calculated based on the crystal orientation in the direction of load stress in the maximum stress area when external force is applied, is 2.3 or more.