NST TIG 309LMo

NST TIG 309LMo is used for welding of stainless materials against carbon steel and for cladding of carbon steel. Normally, Argon or Argon/Helium mix is used as the shielding gas. The wire is used for manual welding of both pipes and plates. Level of gas flow will depend upon diameter and specific application. NST TIG 309LMo gives a ductile and crack resistant weld metal. The TIG-rods are supplied colour coded in orange, with the AWS designation embossed, according to the requirements of the NORSOK standard. ”Purity” is the keyword when welding high alloyed materials. Impurities in the weld, will cause porosity. When cladding carbon steel, the analysis of the weld metal is the equivalent of AISI 304 in the first layer. Welding of pipes require use of purge gas in order to ensure a corrosion resistant root face of the weld. Inter-pass temperature should not exceed 150°C, and heat input should not exceed 2.0kJ/mm.

*Cr can be lower and Ni higher than the AWS standard.