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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

Lightweight-Low Expansion Al-Si Alloys

Lightweight-Low Expansion Al-Si Alloys
Light Weight-Low Expansion-High Thermal Conductivity Packaging Materials(AlSi alloys products) For Military,Aerospace,and Space Fields
Product Details

Light Weight-Low Expansion-High Thermal Conductivity Packaging Material(AlSi alloy) For Military,Aerospace,and Space Fields.


Baienwei company manufactures a range of Al-Si alloys:

 AlSi25 (AlSi25Cu4Mg) alloy;

 AlSi42 alloy,  Al-42%Si alloy;

 AlSi50 alloy,  Si-50%Al alloy;

 AlSi60 alloy,  Si-40%Al alloy;

●  AlSi70 alloy,  Si-30%Al alloy;

 AlSi80 alloy,  Si-20%Al alloy.


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These advanced alloys(Al-Si alloys) have the unique combination properties,such as:

 Adjustable CTE, controllable CTE, in the range of 17-7ppm/℃ 

Lightweight,such as 10% lightweight than pure aluminum; 25% the weight of Cu-Mo;55% the weight of Titanium; 

Good thermal conductivity,such as AlSi alloys = 120/175 W/m-K,BEW Al 6061(T6) =210;

 Ease of platable and machinable;

● Environmentally friendly.


Commonly Used Packaging Materials Performance Comparison:  

GradesContent
wt%
CTE 25℃ ppm/℃Thermal   Conductivity  25W/mKDensity   g/cm³Tensile  Strength MPaYield  Strength  MPaPoisson’s  RatioElongation
%
Elastic  Modulus   GPa 
AlSi27Al-27%Si171752.641701300.293.891
AlSi35, FAl-35%Si15.11522.5416595--2.585
AlSi42Al-42%Si13.51602.552001870.291105
AlSi50Si-50%Al11.51402.52202100.28<1108
AlSi60Si-40%Al91252.461811810.27<1121
AlSi70Si-30%Al7.51202.431381380.25<1131
AlSi80Si-20%Al61102.40125125----132


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