No nie do konca, aerospace grade aluminum to grupa specjalnych stopow aluminium stosowanych w lotnictwie, np.:
2024: A high-strength alloy frequently used in aircraft structures and wings.
6061: Known for its good corrosion resistance and weldability, often used in aircraft landing gear and structural parts.
7075: One of the strongest aluminum alloys, used for high-stress components like aircraft fuselages and gears.
5052: Has high fatigue strength and is commonly used for fuel tanks.
7068: One of the strongest aluminum alloys available for aerospace applications, known for its high strength and corrosion resistance.
2219: Maintains strength at high temperatures and was used for the Space Shuttle's external fuel tank.
Features of Aerospace Grade Aluminium
High strength to weight ratio
Aerospace grade aluminium alloys are strong and lightweight. Both desirable qualities for machining aerospace parts used in high-performance applications such as those found in aerospace and automotive industry.
Corrosion resistance
Multiple aerospace grade aluminium alloys have excellent corrosion resistance. However, the degree of corrosion resistance might vary depending on the alloy, but most have commendable corrosion resistance for longer service life and while maintaining their surface finish.
Electrical conductivity
Aluminium in general exhibits greater electrical conductivity than other materials like stainless steel this makes machined aluminium parts more suitable as electrical and electronic components.
Surface finish
In many aerospace applications where the component is visible, aesthetic appeal is crucial. Aluminium readily accommodates various surface treatments and finishing processes including anodization, tinting and painting which allows manufacturers to improve the function and aesthetic properties of the machined aluminium part or product.
Mozna poczytac np. tu: https://www.thyssenkrupp-materials.co.uk/aerospace-grade-aluminum
W tym konkretnym przypadku takowy stop zostal spieniony przez pompowanie gazu (np. powietrza) do roztopionego metalu.
Takie struktury sa lzejsze i z reguly slabiej przewodza cieplo niz "pelny" metal, przy zachowaniu wielu parametrow mechanicznych.
https://www.exxentis.co.uk/porous-aluminium/porous-aluminium-technology/aluminium-foam-overview-types-production-applications/
Closed-pore aluminium foam has a porosity of 80 to 98%. Its strength significantly exceeds that of a solid metal of the same weight. The use of such materials has great potential, especially for the means of transport of the automotive industry, the aerospace industry and shipbuilding. The weight reduction leads to fuel savings or makes it possible to increase the weight of the load to be transported.
The porous structure of the aluminium foam absorbs the impact energy. This property can be used during transport to protect against collisions, as armor and explosion protection. Metal foam dampens sound. Therefore, aluminium foam panels can be used as sound absorption walls along streets and railways. Sound insulation of cinemas and concert halls can also be effective. Due to its low weight and beautiful surface, aluminium foam is used for interior and exterior design.