TODAY'S modern aeroplanes require light weight components to satisfy the aeroplane's flight performance requirements. More than ever before new designs require commercially pure titanium (Grades A40, A55, and A70) because of the needs for high ductility associated with moderate strength, high corrosion resistance and good weld ability. Commercial aeroplane pneumatic system ducting is an excellent application of titanium material. Recently, titanium has been used in other applications on aircraft such as hydraulic and fuel piping in addition to ducting.