These materials include ceramic metal-based materials, metal alloys, and... those protected from oxygen include tantalum, tungsten, and molybdenum. ...A large number of these alloys are available in the form of strips, wires, tubes and bars.
... Gallium, germanium, graphite, hafnium, tantalum, tungsten and various rare earths. Figure... Copper strip, copper tube, sputtering target, etc. ... In 2017, suppliers were unable to obtain enough copper alloys...
...From titanium, tantalum, tungsten, stainless steel and other materials. Boeing has begun to work with suppliers to manufacture titanium alloy parts for... "For example, a complex tube may have to be formed in two different molds...