In aerospace and aircraft construction it is essential that materials with a high strength to weight ratio be used. For thisreason, the designer tries to get the last ounce of strength out of each part. An increasing scarcity of resources and their growing expensedemands a reduction in energy consumption for passenger and goods transportation. Here, the aerospace and aviation sector plays a specialrole with respect to the application of new materials. There is probably no other material more closely related to aerospace and aircraftthan titanium and its alloys. With a density of 4.Jg/cm³, titanium alloys are only about half as heavy as steel or Ni-based super alloys,yielding a unique combination of strength and lightness. Furthermore, then have exceptional corrosion resistance favorsthe use of titaniumalloys in the aerospace and aviation sector.