Light Weight And Low CTE Aluminum Alloys

- Mar 03, 2018-

Tianjin Baienwei New Material Co.Ltd  not only individually develops a set of Si-Al alloys which are popularly used in avionics system ,but also have highest strength aluminum alloys for aerospace and military industries.

With the combination of uniform and isostropic microstructure,high performance and exellent mechanical properties,silicon aluminum(Si-Al) alloys,also named Al-Si Controlled Expansion Alloys which can be widely used in electronic packaging. Based on relevant statistics,the cost is as much as 50,000 pounds as per 1kg pay load,especially more than 100 times for satellite communications,which in effect is the case of gram.Tianjin Baienwei Co.,Ltd fabricates series of silion-aluminum alloy materials which the primary silicon particles with an average size of 10μm and distribution well.Due to the uniform and homogeneous silicon particle,any direction of the Si-Al alloy has the outstanding mechanical and thermal properties,essentiall the separation between the electronic parts and the packaging materials is eliminated by the deformation or warping of the electronic parts caused by higher heat or mechanical loading.With the refined silicon particles,the AlSi alloys are ease of machined by diamond tools,PCD tools or carbide-tipped tool,and will not leave too much processing stress.The binary silicon-aluminum(AlSi) alloys has become an versatile thermal management material of replacement Cu-M,Cu-Mo,Kovar and Titanium.

By using the proprietary of Rapid Solidification process,aluminum alloys optimized for highest strength aerospace and military applications where high temperature stability is a must.The highest aluminum alloys possess the excellent properties of low CTE,low density,good wear resistance even at high temperature,good grindability and highest stiffness(E-modulus).For instance,aluminum alloy 7075,7068 and 7075 is available for your choice.These alloys are in particular suitable for aerospace structural components.

We can produce the following alloys per your request.

BEW 7055 alloy offers the combination of highest strength,light weight and good corrosion resistance. 

BEW 7068 alloy is combining the high fatigue strength and excellent corrosion resistance behavior.

BEW 7075 alloy has the highest strength comparable to many steels,and has good fatigue strength and average machinability.

Comparasion of Conventional Casting Process and Rapid Solidification Technology: