Tantalum, niobium, molybdenum and tungsten are the most refractory metals and the range of compounds and alloys in which they are used. ...Tantalum powder, wire and sheet are commonly used in...
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This is why about 75% of this metal is used as an alloy for...and domestic alloy scraps," the U.S. Geological Survey wrote in an information sheet about...granites, which usually also contain tantalum, niobium and A series of other key minerals.
... Including as alloying elements in steel and various other alloys, ... In the manufacture of superconducting wires, both types of plates are... based on technical metals: tantalum, niobium, tungsten and molybdenum.
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