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Contact Baienwei

Address: No. 13, Baofu Road, Tianbao Industrial District, Baodi, Tianjin,China.

TEL: 86-22-29291825

FAX: 86-22-29291821

Email: alsi@baienwei.com

Website: http://www.alsi-alloys.com

Advanced Packaging Materials For High Power T/R Modules

Advanced Packaging Materials For High Power T/R Modules
Our company provides a family of Al-Si alloys which are composed of silicon-aluminum and by adjusting the proportions of these two constituents, the coefficient of thermal expansion (CTE) can be controlled to any pre-selected value between 6 and 17 ppm/℃. For example,from the AlSi27~AlSi80 alloy materials are available in stock.
Product Details

Tianjin Baienwei(BEW) company manufactures a wide range of Al-Si controlled expansion alloy products which possess the lightweight-low expansion(CTE)-high thermal conductivity and other excellent properties.


Advantages of controlled expansion Si/Al alloys:

● Current housings for RF modules in space-based applications are generally made from either Kovar or 6061 Al.

● The controlled expansion rapid solidified Si-Al housing materials combining a CTE approaching that of Kovar, with a thermal conductivity approaching that of 6061 Al, and a density that is less than that of both materials.


The Al-Si controlled expansion alloys' properties as below:

 Content

wt%

Density
g/cm³

CTE
ppm/℃

Thermal 

      Conductivity
           W/m-K

Tensile Strength
MPa

Yield Strength
MPa

Poisson's Ratio

Elongation
%

Elastic Modulus
GPa

Al-27%Si

2.6

17

175

170

130

0.29

3.8

91

Al-42%Si

2.55

13.5

143

200

187

0.29

1

105

Al-50%Si

2.5

11.5

140

220

210

0.28

<1

108

Si-40%Al

2.46

9

125

181

181

0.27

<1

121

Si-30%Al

2.43

7.5

120

138

138

0.25

<1

131

Si-20%Al

2.40

6

110

125

125

--

--

132







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