Hubei Fotma Machinery Co., Ltd.
| Payment Terms | T/T, L/C, Western Union, PayPal |
| Supply Ability | 10000pcs/month |
| Delivery Time | 20-25 days after deposit |
| Packaging Details | Paper cartons or plywood boxes |
| Tungsten | 50% - 90% |
| Copper | 10% - 50% |
| Sizes | Customized |
| Application | LED Heat spreader parts |
| Surface | Blank, Ni Coated |
| Tolerance | +/-0.05mm |
| Brand Name | FOTMA |
| Model Number | WCu Tablets |
| Certification | ISO9001:2008 |
| Place of Origin | P.R. China |
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Product Specification
| Payment Terms | T/T, L/C, Western Union, PayPal | Supply Ability | 10000pcs/month |
| Delivery Time | 20-25 days after deposit | Packaging Details | Paper cartons or plywood boxes |
| Tungsten | 50% - 90% | Copper | 10% - 50% |
| Sizes | Customized | Application | LED Heat spreader parts |
| Surface | Blank, Ni Coated | Tolerance | +/-0.05mm |
| Brand Name | FOTMA | Model Number | WCu Tablets |
| Certification | ISO9001:2008 | Place of Origin | P.R. China |
| High Light | W90Cu10 Tungsten Copper Alloy ，Thickness 1.0mm Tungsten Copper Alloy ，LED Heat Spreader Tungsten Copper Alloy | ||
Tablets Tungsten Copper Alloy Grade W80Cu20 W90Cu10 Thickness 0.1 - 1.0mm for LED
Tungsten copper alloy is the first choice for LED heat spreader parts. Thermal conductivity and thermal expansion characteristics of the base plate must be optimally harmonized to avoid undesired distortions to the semiconductor. The better harmonized the properties are, the better the semiconductor module is to withstand soldering processes involved during manufacture and the temperature cycles that occur during operation.
Thermal expansion characteristics of tungsten copper alloy tablets similar to those of silicone carbide, aluminum oxide, and beryllium oxide, used as chips and substrates. Because of tungsten copper’s thermal conductivity and expansion characteristics, Tungsten copper tablets works well in densely packed circuits too.
Applicatioins of Tungsten Copper Tablets:
Advantages of Copper Tungsten Tablets:
High thermal conductivity
Strong hardness(86~93.5HRA)
High arc resistance combined with good electrical conductivity
Low thermal expansion.
Specifications of Tungsten Copper Alloy Tablets:
| Material | W90Cu10 | W88Cu12 | W85Cu15 | W80Cu20 | W75Cu25 |
| Tungsten Content (wt%) | 90 ± 1 | 88 ± 1 | 85 ± 1 | 80 ± 1 | 75 ± 1 |
| Density at 20°C (g/cm3) | 17.0 | 16.8 | 16.3 | 15.6 | 14.9 |
| Coefficient of thermal expansion at 20°C (10-6/K) | 6.5 | 6.7 | 7.0 | 8.3 | 9.0 |
| Code No. | Chemical Composition % | Mechanical properties | ||||||
| CU | Impurity | W | Density (g/cm3) |
Hardness HB | RES(cm)
|
Conductivity IACS/ %
|
TRS/ Mpa
| |
| CuW(50) | 50+2.0 | 0.5 | Balance | 11.85 | 115 | 3.2 | 54 |
|
| CuW(55) | 45+ 2.0 | 0.5 | Balance | 12.30 | 125 | 3.5 | 49 |
|
| CuW(60) | 40+2.0 | 0.5 | Balance | 12.75 | 140 | 3.7 | 47 |
|
| CuW(65) | 35+2.0 | 0.5 | Balance | 13.30 | 155 | 3.9 | 44 |
|
| CuW(70) | 30+2.0 | 0.5 | Balance | 13.80 | 175 | 4.1 | 42 | 790 |
| CuW(75) | 25+2.0 | 0.5 | Balance | 14.50 | 195 | 4.5 | 38 | 885 |
| CuW(80) | 20+2.0 | 0.5 | Balance | 15.15 | 220 | 5.0 | 34 | 980 |
| CuW(85) | 15+2.0 | 0.5 | Balance | 15.90 | 240 | 5.7 | 30 | 1080 |
| CuW(90) | 10+2.0 | 0.5 | Balance | 16.75 | 260 | 6.5 | 27 | 1160 |
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Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2004
Total Annual:
5000000-8000000
Employee Number:
50~100
Ecer Certification：
Active Member
Hubei Fotma Machinery Co.Ltd established in 2004 as a combined group engaged into manufacturing and exporting of Non-Ferrous Metals, Agricultural Machinery and Instruction Machinery etc. In 2005, our factory established in Zigong, Sichuan P.R., which is a professional manufacturer of ... Hubei Fotma Machinery Co.Ltd established in 2004 as a combined group engaged into manufacturing and exporting of Non-Ferrous Metals, Agricultural Machinery and Instruction Machinery etc. In 2005, our factory established in Zigong, Sichuan P.R., which is a professional manufacturer of ...
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