High Strength Aluminum Alloys Properties

7075 alloy is the most common high strength true aircraft aluminum alloy used today.

High strength aluminum alloys properties.

Aluminium is well suited to cold environments. Aluminum and aluminum alloys 355 table 2 strength ranges of various wrought aluminum alloys aluminum type of tensile association alloy strengthening strength range series composition method mpa ksi 1xxx al cold work 70 175 10 25 2xxx al cu mg heat treat 170 310 25 45 1 2 5 cu 2xxx al cu mg si heat treat 380 520 55 75 3 6 cu. Pure aluminium doesn t have a high tensile strength. Aluminium alloys with a wide range of properties are used in engineering structures.

Because of the absence of the iron phase beta needles the 367 like all mercalloy alloys have excellent fluidity and resistance to hot cracking which makes it possible to produce castings that are large in size and. However the addition of alloying elements like manganese silicon copper and magnesium can increase the strength properties of aluminium and produce an alloy with properties tailored to particular applications. One of the most commonly used high strength aluminum alloys. It has excellent mechanical properties and exhibits good ductility high strength toughness and good resistance to fatigue.

With its combination of high strength and excellent fatigue resistance it is commonly used where a good strength to weight ratio is desired. This grade can be machined to a high finish and it can be formed in the annealed condition with subsequent heat treating if needed. Al wq68 shows significant better high temperature properties compared to a7075. In fact it s worth noting that its specific strength is comparable to that of 6al 4v grade 5 titanium.

Its typical yield strength 73 ksi in the t6 condition is comparable to certain steels giving the alloy a remarkably high strength to weight ratio. It is more susceptible to embrittlement than many other aluminium alloys because of microsegregation but has significantly. Mercally hs high strength aa 367 is a 9 si alloy optimized for a great mix of castability and properties. Alloy systems are classified by a number system or by names indicating their main alloying constituents din and iso selecting the right alloy for a given application entails considerations of its tensile strength density ductility formability workability weldability and corrosion resistance to name a few.

The 7000 series alloys have the highest strength in the aluminum alloys but lower fatigue properties than 2000 series alloys as shown in fig 1 1 thus 2000 series alloys accounts for a large proportion of the aircraft components for their better fatigue properties than 7000 series alloys have not been elucidated yet. These other elements include iron silicon copper magnesium manganese and zinc at levels that combined may make up as much as 15 percent of the alloy by weight. An aluminum alloy is a chemical composition where other elements are added to pure aluminum in order to enhance its properties primarily to increase its strength.