Copper Tungsten(Cu-W)Rod

Tungsten copper rod introduction

Copper tungsten is a remarkable composite material that combines the unique properties of copper and tungsten. This material is widely used in various industries due to its excellent thermal and electrical conductivity, as well as its high resistance to wear and corrosion. Additionally, copper tungsten possesses a low coefficient of thermal expansion, making it an ideal choice for applications that require dimensional stability under varying temperatures.

One of the most common forms of copper tungsten is the rod, which is manufactured through a process called infiltration. During this process, tungsten powder is compacted and sintered to create a porous structure, which is then infiltrated with molten copper. The resulting copper tungsten rod exhibits a homogeneous distribution of tungsten particles within the copper matrix. Moreover, the ratio of copper to tungsten can be adjusted to achieve specific properties tailored to different applications.

Copper tungsten rods find extensive use in various fields, such as electrical discharge machining (EDM), welding electrodes, and heat sinks. In EDM, copper tungsten rods serve as electrodes due to their ability to withstand high temperatures and maintain their shape during the machining process. Furthermore, the high electrical conductivity of copper tungsten makes it an excellent material for welding electrodes, ensuring consistent and reliable welds. Lastly, the combination of high thermal conductivity and low thermal expansion renders copper tungsten rods as efficient heat sinks, effectively dissipating heat in electronic devices and machinery.

QSAMs copper tungsten products

As copper and tungsten shall not really melt together, Cu-W is produced by powder metallurgy. Due to the high electric conductivity and relatively high max. working temperature of this material, copper-Tungsten rod is usually used in electric component, such as electrodes. QS Advanced Materials could supply both copper tungsten and silver tungsten in many shapes. As the place of where to buy tungsten copper material, QSAM is always glad to receive your inquiry and always welcome custom design with drawing.

Common composition of copper-Tungsten alloy

Composition wt. %	Density g/cm3	Hardness HB Kgf/mm2	Resistivity micro Ome*cm	IACS%	Bending strengthMpa
W50/Cu50	11.85	115	3.2	54	-
W55/Cu45	12.3	125	3.5	49	-
W60/Cu40	12.75	140	3.7	47	-
W65/Cu35	13.3	155	3.9	44	-
W70/Cu30	13.8	175	4.1	42	790
W75/Cu25	14.5	195	4.5	38	885
W80/Cu20	15.15	220	5	34	980
W85/Cu15	15.9	240	5.7	30	1080
W90/Cu10	16.75	260	6.5	27	1160

Tungsten copper packaging

Tungsten is stable in air and packed without vacuum seal, unless requested. Wooden crater is applied when the cargo is over weight.

*Mill report available for our tungsten rod.

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