COMPOSITE METAL MATERIAL AND ARTICLES MADE THEREFROM

摘要

A composite metal material displaying lower cost and improved strength and corrosion resistance is shown to comprise a layer of copper or brass material and a layer of aluminum material solid-phase metallurgically bonded to respective opposite sides of a layer of low carbon steel. The composite material is formed into an article such as a lamp bulb base or a door knob with the brass or copper layer of the composite material facing exteriorly of the article, the aluminum layer of the composite material then serving as a preferentially corrosive material which protects the low carbon steel layer of the composite material from corrosion.