Al-Mg ALUMINUM ALLOY HOLLOW EXTRUDED MATERIAL

摘要

PROBLEM TO BE SOLVED: To enable the molding of an Al-Mg based aluminum alloy hollow extruded material using a hollow die for forming a deposition part represented by a porthole die. SOLUTION: An Al-Mg aluminum alloy containing 1.5 to 5.0 mass% Mg is used, and a hollow extruded material in which F value defined by following formula is 40 to 500 is extrusion-molded: F = the whole peripheral length (mm) of the cross-section of the extruded material/the specific weight (kg/m) of the extruded material. COPYRIGHT: (C)2003,JPO