Solid wire of G 23 7 N L / ER2307 type for welding the lean duplex grade 2304 (1.4362 / UNS S32304) and similar materials. Provides a ferritic-austenitic weldment that combines many of the good properties of both ferritic and austenitic stainless steels. It has a low content of molybdenum, which makes it well suited for nitric acid environments. Welding without filler metal (i.e. TIG-dressing) is not allowed since the ferrite content will increase drastically and both mechanical and corrosion properties will be negatively affected. Over-alloyed with nickel to promote weld metal austenite formation and designed to result in weld metal ferrite levels of 35 – 65%. Very good resistance to pitting corrosion and stress corrosion cracking in nitric acid environments.