2198 as today’s most advanced Aluminium-Lithium alloy is chosen as the ideal fuselage skin sheet material for world’s most advance twin-engine aircraft A350. 2198 in T8X temper condition shows an outstanding combination of high static strength and high damage tolerance for large damage capability like two frame bay crack. High thermal stability, a “must” for fuselage skin application, is also one of the 2198 main advantages. For today's Airbus fuselage application, an alloy has to show additional features: Laser-Beam- and Friction-Stir-Welding as well as good forming capability. The paper gives a brief history of the 2098 (2198) development, a view on the application of 2198 T8X in the A350 fuselage, the main properties and an overview of the Friction-Stir- and Laser-Beam-Welding application.