Which alloy of aluminium is used for making aircraft parts?
Usually, aluminum is mixed with different percentages of lithium, and depending on the purpose of the aircraft part, these alloys are heated and prepared with many complex methods. Commercial aluminum-lithium alloys are targeted as advanced materials for aerospace technology primarily because of their low density, high specific modulus, and excellent fatigue and cryogenic toughness properties. Commercially pure aluminum has a tensile strength of about 13,000 psi, but by rolling or other cold-working processes, its strength may be approximately doubled. By alloying with other metals, such as lithium, and occasionally magnesium, together with the use of heat-treating processes, the tensile strength of an aircraft may be raised to as high as 96,000 psi, or to well within the strength range of structural steel. The aluminum alloy material, although strong, is easily worked, for it is very malleable and ductile. One disadvantage of aluminum alloy is the difficulty of making reliable soldere
