Tungsten Copper Alloy

Tungsten Copper Alloy Material Composition And Properties

Composites	Nominal Composition  (% Weight)	Density (g/cm3, ≥)	Electrical Resistivity  (20°C, µΩ·cm, ≤)	Electrical conductivity  (IACS%, ≥)	Hardness (≥)  Brinell Hardness		Bending Strength
					Mpa	Kgf/mm2	Mpa	Kgf/mm2
CuW50	50% Copper  50% Tungsten	11.85	3.2	54	1128	115	—	—
CuW55	45% Copper  55% Tungsten	12.3	3.5	49	1226	125	—	—
CuW60	40% Copper  60% Tungsten	12.75	3.7	47	1373	140	—	—
CuW65	35% Copper  65% Tungsten	13.3	3.9	44	1520	155	—	—
CuW70	30% Copper  70% Tungsten	13.8	4.1	42	1716	175	667	68
CuW75	25% Copper  75% Tungsten	14.5	4.5	38	1912	195	706	72
CuW80	20% Copper  80% Tungsten	15.15	5.0	34	2158	220	736	75
CuW85	15% Copper  85% Tungsten	15.9	5.7	30	2354	240	765	78
CuW90	10% Copper  90% Tungsten	16.75	6.5	27	2550	260	804	82

Tungsten Copper Alloy Thermal Properties

Material Type (wt%）	WCu10	WCu15	WCu20	WCu25	WCu30
Thermal Conductivity(W/m·K)	>160	>170	>180	>200	>220
The Coefficient of Thermal Expansion (×10-6/K)	6.2~6.5	6.9~7.2	7.4~7.7	8.0~8.4	8.8~9.4

Tungsten Copper Alloy Products Specifications

Product	Dimensions	Surface
Tungsten Copper Plate	Thickness: 0.5-50mm Width×Length: 300mm x 300mm Customized	No coating Electroplated Ni and Ni-Au Electroless Ni
Tungsten Copper Rod	Diameter: 2-200mm Length: customized

Tungsten Copper Alloy Features

• High-temperature resistance
• Resistant to arc abrasion
• High strength
• High specific gravity
• Good thermal and electrical conductivity
• Low thermal expansion
• Easy cutting and machining

Tungsten Copper Alloy Production Process

Tungsten-copper alloy is produced using powder metallurgy. A key manufacturing process for this alloy is infiltration: after compacting the porous tungsten preform, copper is allowed to infiltrate it, followed by sintering. The material is then machined to achieve the required geometry as specified by the customer. Tungsten-copper alloy is a pseudo-alloy of copper and the refractory metal tungsten. Since copper and tungsten are immiscible, the infiltration method is used to achieve bonding between the two materials. The specific processes are as follows:

• Compaction: The porous tungsten preform is compacted.
• Infiltration: Copper is allowed to infiltrate the compacted tungsten preform.
• Sintering: The infiltrated material is sintered at high temperatures, forming a dense solid material.
• Annealing: The sintered products undergo an annealing process to remove internal stresses and improve toughness and ductility.
• Machining: Precision machining processes, such as turning, milling, and grinding, are applied to the sintered parts to achieve final dimensions and shapes.
• Heat Treatment: The alloy undergoes additional heat treatment to optimize properties such as hardness, strength, or other physical characteristics.
• Surface Treatment: If required, surface treatments (such as coating, passivation, etc.) are applied to enhance corrosion resistance, hardness, or other properties.

Tungsten Copper Alloy Machining Service

HM has advanced machining centers equipped with various high-precision processing equipment, enabling us to offer multiple machining services such as turning, milling, grinding, and drilling. Whether for large-scale production or customized small-batch orders, we guarantee high precision and performance to meet customer’s specific requirements. The following are methods we will use during processing:

• Isostatic Pressing
• Forging
• Extrusion
• Molding
• Injection Molding
• Rolling
• Electrical Discharge Machining (EDM)
• Milling
• Turning

Tungsten Copper Alloy Applications

• High-temperature materials: Tungsten-copper alloys have excellent high-temperature resistance and are commonly used in high-temperature parts such as rocket engine nozzles.
• Electrical contacts: Tungsten-copper alloys have high electrical conductivity and arc resistance and are widely used for electrical contacts in high-voltage circuit breakers, switches, and relays.
• Heat sinks: The high thermal conductivity of tungsten-copper alloy makes it ideal for heat sinks in electronic equipment such as integrated circuits and power semiconductors.
• Electrode: Copper tungsten alloy is commonly used as electrode material in electric discharge machining (EDM) and resistance welding.

Tungsten Copper Alloy Packaging

The Tungsten Copper Alloy is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.