Tungsten-Copper alloy (W-Cu Alloy) is the composite of Tungsten and Copper with 10-50wt.% Cu, which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electrical power, electron, metallurgy, spaceflight and aviation. Using CIP formation, sintered tungsten skeleton and infiltrating copper (silver) technology, large size and special shape products of tungsten-copper (silver) composites with 6-90 percent of copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket, We can also produce sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.

Chemcial Composition.Physical & Mechanical Properties of Tungsten-Copper  Composites

Class	Chemical Composition(wt %)			Density	Hardness	Resistivity	INCS	Bending Strength
	Cu	Total Impurities <=	W	g/cm3  >=	HB Kgf/mm2  >=	Ohm.cm <=	% >=	Mpa >=
W50/Cu50	50+/-2.0	0.5	balance	11.85	115	3.2	54	--
W55/Cu45	45+/-2.0	0.5	balance	12.3	125	3.5	49	--
W60/Cu40	40+/-2.0	0.5	balance	12.75	140	3.7	47	--
W65/Cu35	35+/-2.0	0.5	balance	13.3	155	3.9	44	--
W70/Cu30	30+/-2.0	0.5	balance	13.8	175	4.1	42	790
W75/Cu25	25+/-2.0	0.5	balance	14.5	195	4.5	38	885
W80/Cu20	20+/-2.0	0.5	balance	15.15	220	5	34	980
W85/Cu15	15+/-2.0	0.5	balance	15.9	240	5.7	30	1080
W90/Cu10	10+/-2.0	0.5	balance	16.75	260	6.5	27	1160

Application :

1.Arcing contacts and vaccum contacts in high and medium voltage breakers or vaccum interruptors.

2.Electrodes in electric spark erosion cutting machines.

3.Heat sinks as passive cooling elements of electronic devices.

4.Electrodes for Resistance Welding.