NST TIG 309LMo small


TIG-rod for stainless steel welding.

AWS: A5.9 ER 309LMo*
EN ISO 14343: 2009 23 12 2 L

General description:

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.

Chemical composition of welding wire:


Typical mechanical properties of all-weld-metal:

430 Mpa625 Mpa43 %

Packaging information:

1,6mm x 500mm x 2,5kg -ArticleNo.:1460520
2,0mm x 500mm x 2,5kg -ArticleNo.:1460521
2,4mm x 500mm x 2,5kg -ArticleNo.:1460522

Do you need help with ordering or want a price offer?
Click here to contact us.


NST TIG 309LMo, English, 02.06.2020.