Abstract:
An inexpensive transitional connector, suitable for use in joining aluminum tubes to tubes formed of a variety of other materials which cannot be readily soldered, brazed or welded to aluminum, is shown to comprise steel and aluminum tubular elements disposed in coaxial relation to each other, the tubular elements being metallurgically bonded together. Preferably, the transitional connector incorporates a silicon-aluminum layer between the aluminum and steel elements thereof to retard formation of aluminum-iron intermetallic compounds at the interface between the aluminum and steel elements during soldering, brazing or welding of the transitional connector. If desired, the steel element of the connector is clad with a layer of copper.
Abstract:
A cable for the transmission of communication impulses or signals uses as a cable shielding material a highly conductive cable shield material which is of high strength and which is corrosion resistant. The material consists of a four-layered composite bonded together and comprised of a thin conductive layer of copper as the outer layer to prevent rust formation next to a layer of high strength, corrosion-resistant nickel and chromium containing steel (stainless steel) next to a layer of low carbon steel which provides greater ductility and a cost saving next to an innermost layer of copper which provides corrosion protection and which is relatively thick to provide overall conductivity.