Aluminium Alloy Bare Plate / Panel in Aircraft & Aerospace
The advancement of aircraft and rocket technology is directly tied
to the advancement and production of aluminum alloys. From the
Wright brothers’ use of aluminum in the engine of their first
biplane to NASA’s use of an aluminum-lithium alloy in the new Orion
spacecraft—aluminum has created the potential for mankind to fly
both around the Earth and into space.
|Item||Typical Thickness / mm||Tensile Strength||Yield Strength||Elongation / %||Standard|
|7075 sheet T6||0.5-6.0||580||500||12||SAE AMS -QQ-A-250/12|
|7075 sheet T73||0.5-6.0||480||405||12||SAE AMS -QQ-A-250/12|
|7075 sheet T76||0.5-6.0||490||410||12||SAE AMS -QQ-A-250/12|
7XXX Series Alloys – (heat treatable – with ultimate tensile strength of 32 to 88 ksi)
These are the aluminum / zinc alloys (zinc additions ranging from
0.8 to 12.0%) and comprise some of the highest strength aluminum
alloys. These alloys are often used in high performance
applications such as aircraft, aerospace, and competitive sporting
equipment. Like the 2xxx series of alloys, this series incorporates
alloys which are considered unsuitable candidates for arc welding,
and others, which are often arc welded successfully. The commonly
welded alloys in this series, such as 7005, are predominantly
welded with the 5xxx series filler alloys.
The airframe of a typical modern commercial transport aircraft is
80 percent aluminum by weight. Aluminum alloys are the overwhelming
choice for the fuselage, wing, and supporting structures of
commercial airliners and military cargo/transport aircraft.
Structural components of current United States Navy aircraft are
made of fabricated wrought aluminum (forged, machined and assembled
parts). Attention is now focused toward aluminum casting
technology, which offers lower manufacturing costs, the ability to
form complex shapes and the flexibility to incorporate innovative
Aluminum was used as the primary propellant for the space shuttle’s
solid rocket booster motor because it has a high volumetric energy
density and is difficult to ignite accidentally.
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