Aerospace Aluminium including Scandium - Aleris''Our AlMgSc technology offers aerospace manufacturers signifi cant weight savings opportunities. In a 1:1 exchange, or drop-in, our alloy AA5028 H116 offers a 4 to5 percent weight advantage compared to conventional AA2024.
The exceptional weldability of AA5028, offers further weight savings. With AlMgSc sheet, stringer reinforced aircraft fuselage components can be Laser Beam Welded (LBW) or Friction Stir Welded (FSW) when the individual parts are still fl at, without any prior treatment.
Creep forming the material at elevated temperatures can achieve the single or double curvature of the fuselage part required for the aircraft body.Using this method, there is no distortion or spring back of the material, thus enabling a high precision and cost-effective production process. As compared to stretch forming, no clamping allowance is required, which improves the buy-to-fly ratio. Even for traditionally riveted designs AlMgSc sheets can be roll-formed with subsequent attachment of any kind of stringer material.''
https://scandiummining.com/site/assets/files/5785/al-2342_012-aktualisierung-br-almgsc-2015-06-03-web.pdf