Use & Application
Consumables designed specifically for use where niobium stabilized weld metal is required in overlays, or inlays, on CMn or low alloy steels. A minimum niobium content of 0.7% in undiluted weld metal ensures a fully stabilized deposit of approximately 347 composition is produced in the first layer on mild and medium carbon steels. It may also be useful for the first run when welding 321 or 347 clad steels, prior to completion with 347 type weld metal. It is not recommended as an alternative to 309L types for dissimilar welded joints.
Alloy type
A low carbon 309 type weld metal with a minimum niobium level of 0.7%.
In the as-welded condition the microstructure consists of austenite with a ferrite content of 8-20FN.
Materials to be welded

There are no comparable parent materials and it's normally used for overlays only.

Products of the line 309LNb

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