Lots of clients asked some questions,
however, I feel ashamed that I could not able to answer all the doubts. I need
to ask others for the answer. Now, I would like to add some knowledge of tungsten
copper alloy from Wikipedia.
Copper-tungsten (tungsten-copper, CuW, or
WCu) alloy is a pseudo-alloy of copper and tungsten. As copper and tungsten are
not mutually soluble, the material is composed of distinct particles of one
metal dispersed in a matrix of the other one. The microstructure is therefore
rather a metal matrix composite instead of a true alloy.
The material combines the properties of
both metals, resulting in a material that is heat-resistant,
ablation-resistant, highly thermally and electrically conductive, and easy to
machine.
Parts are made from the CuW alloy by
pressing the tungsten particles into a desired shape, sintering the compacted
part, then infiltrating with molten copper. Sheets, rods and bars of the alloy
are available as well.
Commonly used copper tungsten alloy
contains 10 to 50 wt. % of copper, the remaining portion being mostly
tungsten. The typical properties of the alloy depend on its composition. The
alloy with less wt. % of copper has higher density, higher hardness and higher
resistivity. The typical density of CuW90 alloy, with 10% of copper, is 16.75g/cm3 and 11.85g/cm3 for CuW50 alloy.
CuW90 has higher hardness and resistivity of 260 HB kgf/mm2 and 6.5 µΩ.cm than
CuW50.
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