Tungsten 80 Copper 20 Heat Sink

W80 tungsten copper heat sink is composed of 80% tungsten and 20% copper, of which 20±2% is copper and the impurity tungsten is 0.5% of the remainder. Due to the high tungsten content, the characteristics of tungsten itself, high hardness and high melting point, are also reflected in it. Its density can reach 15.15g/cm3, and the hardness is ≥HB220. However, due to the decrease in copper content, the electrical conductivity and thermal conductivity also decrease. The electrical conductivity is about 34IACS%, the thermal conductivity is 190-210 (wm/k), the thermal expansion coefficient is 8.0-8.5 (10-6K), the bending strength can reach 980, and the softening temperature is ≥900℃.

The W80Cu20 heat sink is composed of tungsten and copper in the ratio of 80% and 20%, respectively. The heat sink also possesses a low thermal expansion coefficient and high thermal conductivity. The low thermal expansion coefficient is much the same as the expansion coefficient of semiconductors, chip, and ceramic substrate materials. It helps reduce packaging as well as thermal stressed related cracking and chipping within the heat sink structure, improves reliability of package, and increases the serviceability and reliability of the heat sink. While high thermal conductivity helps in quickly dissipating heat from the chip thereby reducing the working temperature of the chip, ensuring its stable operation and increasing its service life.

Application area: W80Cu20 heat sink is extensively used for electronic heat sink, especially for super-scale integration circuits, ultra-high power microwave devices, and light-emitting diodes (LEDs). It takes care of the electronic components with a protective shell and enhances their electrical and thermal performance, thus making it possible for electronic devices to integrate and operate with a lower size and higher power density.

1) Materials: W30Cu, W50Cu, 70%W/Cu, 75%W/Cu, 80%WCu, 90%WCu
2) Technique: infiltering process
3) Density of tungsten copper:15.5~18.0g/cm3
4) Shape: Plate,sheet,strip,tube,rod,or machined parts
5) Standard: ASTM B702

Comparing of CuW and CuMo alloy for heat sink

Are you a factory or manufacturer?
A: Yes, we are a factory but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.

What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.

Why is your product so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process and we obtain raw material directly from its source.

Do you do spot quality inspection or full inspection?
A: 100% full inspection for sure. All unqualified products are discarded.

How do you ensure your lead time?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.

What is the MOQ of Tungsten 80 Copper 20 Heat Sink?
A: Depends on quantity, generally, no MOQ limit.

How to pay for it?
A: A bank transfer (T/T) will be acceptable.

What is the delivery time?
A: around 7-20 days which depends on the quantity and production.

What is kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo

What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.

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