Bohler CN 22/9 N-IG description: GMAW solid wire particularly suitable for welding of ferritic-austenitic duplex steels. By virtue of specific alloy composition which includes an extremely low oxygen content the deposit has, in addition to high tensile strength and toughness, also excellent resistance to stress corrosion cracking and pitting (PREN>35). In order to ensure good deposit properties, care must be taken to achieve controlled dilution and thorough back purging. Ferrite content 30 – 60 FN (WRC). Suited for temperatures down to -40°C, and up to +250°C. The wire exhibits good feeding, welding and wetting characteristics of the wire. The preferred gas for MIG welding is Argon + 20 % Helium + 2 % CO2.