Properties of tungsten alloys

Attempts to electrodeposit pure tungsten date approximately 140 years back. Nowadays, however, it is commonly accepted that this metal cannot be deposited alone from its aqueous solutions, but can be codeposited as an alloy, exhibiting a unique combination of properties. For example, Ni-W alloys have good mechanical properties (e.g., high tensile strength and premium 

Linear thermal expansion 4.2-4.6x10 4.8-5.5x10 6.00-7.25x10  

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