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US 6,231,995 B1Granted
Aluminum extruded door beam material
AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsHiroyuki Yamashita, Masakazu Hirano
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AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsHiroyuki Yamashita, Masakazu Hirano
Estimating the term…
An aluminum extruded door beam includes an outer flange, an inner flange, and at least one web for connecting the outer flange and the inner flange. The outer corners at the extended ends of the outer flange have a radius R of 2.5 mm or less. The outward corners at the connections between the web and the inner flange and between the web and the outer flange have a radius R of 2 mm to 4 mm. The radius of the outward corners at the connections between the web and the inner flange and between the web and the outer flange is 1.5 to 2 times the width of the web. The length of the extended ends of the outer flange is 1 to 2 times the radius R of the outward corner at the connections between the web and the outer and inner flanges. The aluminum alloy extruded door beam material contains 0.8 to 1.5% by weight (hereinafter the same) of Mg and 4 to 7% of Zn, and the recrystallization surface layer has a thickness of 50 μm or less.
An aluminum alloy extruded door beam material comprising an outer flange, an inner flange, and at least one web for connecting the outer flange and the inner flange, wherein the outer flange contains extended ends that extends in a length beyond the web, said extended ends having outer comers with a radius;
An aluminum alloy extruded door beam material comprising 0.8 to 1.5% by weight (hereinafter the same) of Mg and 4 to 7% of Zn, and the aluminum alloy has a recrystallization surface layer having a thickness of 50 μm or less, wherein a fibrous texture is present below the recrystallization surface layer, wherein the fibrous texture has an aspect ratio of 1:20 or more.
An aluminum alloy extruded door beam material comprising 0.8 to 1.5% by weight (hereinafter the same) of Mg;
Dependencies are inferred from the claim text.