Grade 1 has very good weldability. Being substantially single-phase material, the microstructure of the alpha phase is not affected greatly by thermal treatments or welding temperatures.Therefore, the mechanical properties of a correctly welded joint are equal to, or exceed those of the parent metal and show good ductility.
Chemical composition (weight %) (Maximum values unless range is shown)
For corrosion resistance in the chemical and marine industries; in airframe construction where maximum ease of formability is desired.