409Nb

This ferritic stainless steel welding wire is designed for welding Type 409 and 409Ti base materials. The incorporation of niobium enhances corrosion resistance and fosters a ferritic microstructure. Distinguished from ER409 by the addition of niobium, which aids in forming niobium carbides (NbC) to prevent the development of chromium carbides (Cr3C2), this variant significantly improves corrosion resistance. Moreover, the introduction of niobium enhances strength at elevated temperatures. These consumables are ideal for welding similar 12% Cr ferritic steels, especially in exhaust system components like manifolds, mufflers, catalytic converters, and tubing. To achieve optimal welding results, it is advised to employ a low-heat-input procedure, and caution should be exercised when considering multi-pass applications.

Ferritic stabilized stainless solid welding wire of 12% Cr and 0,4% Nb type.

Ferrite.

Used for welding similar 12% Cr ferritic steels.
ASTM: 409, 409Ti, 409Nb, 439, 430.