Extruded corrosion resistant structural aluminum alloy
AssigneeMitsubishi Kinzoku Kabushiki Kaisha
InventorsYo Takeuchi, Koichi Ohbori, Masabumi Hatsushika, Shinichi Komori
Life of this patent
Estimating the term…
Abstract
A corrosion resistant structural aluminum alloy excellent in extrudability which consists essentially of, in weight percentage: Magnesium from 0.45 to 0.98%, Silicon from 0.3 to 0.8%, Zinc from 0.5 to 2.5%, and, the balance aluminum and incidental impurities; said alloy including a corrosion resistant structural aluminum alloy excellent in extrudability further additionally containing, as required, at least one element selected from the group consisting of, in weight percentage: Copper from 0.04 to 0.30%, Zirconium from 0.04 to 0.25%, Chromium from 0.04 to 0.30%, and Manganese from 0.04 to 0.25%.
Claims4
An extruded corrosion-resistant aluminum alloy structural element having a strength of from 25 to 40 kg/mm.sup.2 prepared by extrusion and heating treatment of an aluminum alloy which consists essentially of, in weight percentage
- magnesium from 0.45 to 0.98%,
- silicon from 0.3 to 0.8%,
- zinc from 0.5 to 2.5%,
- and
- the balance aluminum and incidental impurities.
Dependencies are inferred from the claim text.