China Tungsten Copper Alloy Bar Tube

Company profile

Product Description
TUNGSTEN COPPER COMPOSITE (WCu)
Product Brief Introduction
W-Cu heat sink material is a composite of tungsten and copper, with both tungsten low expansion characteristics, but also has copper of high thermal conductivity properties, and the tungsten and copper in the thermal expansion coefficient and thermal conductivity can be adjusted with the W-Cu composition, also the composite can be machined to various shape, these features make the application of this composite with great convenience. The thermal expansion can be adjusted to match with the following material:
Ceramic materials: , (A-90,A-95,A-99), BeO (B-95, B-99), AIN, etc;
Semiconductor materials: Si, GaAs, SiGe, SiC, GaP;
metal Material: Kovar alloy(4J29), 42 alloy;
The quality of our composite is the leader in China, contributed with our strict quality control measures. Our porosity is very low; our surface/volume ratio(measured with BET) is only 50% of similar products of 100 pieces of 5*5*2 mm W80-Cu20 composite). Our products have high hermeticity and can pass the He mass-spectrometer leak test (<<5*-9Pa·/S)
Our Tungsten Copper Composite Features:
No Fe, Co, Ni, Mn and other elements added as the sintering activator, to maintain a high thermal conductivity
Excellent hermeticity
Can provide semi-finished or finished (Ni/Au plated) products
Precision machining and excellent dimensional control, surface finish and flatness
With close technical support including product design, custom manufacturing, testing and post sale supports.
Product PropertiesPhysical Properties of Major Products

MaterialWt%
Tungsten ContentWt%
Copper Contentg/
Density at 20ºCW/M.K
Thermal conductivity at 25ºC(10-6/k)
Coefficient of thermal expansion at 20ºCW90Cu10901Balance17.0180-1906.5W85Cu15851Balance16.4190-2007.0W80Cu20801Balance15.6200-2108.3W75Cu25751Balance14.9220-2309.0W50Cu50501Balance12.2310-34012.5

Exhibition demeanor

Technological process
Plant and equipment
Logistics and packaging

Packing:
According to consumers' requirements, packing uses standard wooden case, and carton with water proof paper and protective foam inside.
Shipping:
• Transport: TNT, EMS, UPS, FED, DHL, Air transport, Sea Transport, Railway Transport.
• Consumers' request for shipment is available.
• We will recommend the most appropriate transport way for reference.
Service
As a professional exporter, our target is to serve worldwide clients with high-quality products, great reliability, devoted responsibility, professional services and honorable credibility to meet customers' requirements in all aspects. Offering skillful after-sale-service, specialists are available for all customers at 7*24 hours every week. As for payment, except for (L/C, TT etc), our company also accepts all kinds of emerging payment terms (like Western Union, MoneyGram, Escrow etc)to provide convenience for you. Please select the most satisfactory payment term and we will fully meet your demands.
FAQ
Q: What information should I let you know if i want to get a quotation?
A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly supply us drawings).
The required more information, such as Surface Condition, Tolerance Request, The Quantity, and other mechanical and technical details.

If it is possible, please also provide the application of products, we will recommend the most suitable products with details for /confirm/iation.

Q: How do you gurantee the quality of the products?
A: Each step of production and finished products will be carried out inspection by QC department before storing in the warehouse. NG goods are not allowed in the completed goods warehouse.

Q: Can you guarantee the prompt delivery?
A: Yes, when we get your inquiries, not only we will evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.

Q: What is the shipping cost?
A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try best to get the most reasonable shipping cost from the forwarders or express couriers to help you save more money.
Q:What is the transportation way?
A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc.
If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.