Welds 22%Cr-12%Ni steel (SUS309S, etc.). Dissimilar material welding involving stainless steel and carbon steel or low-alloy steel. Underlay for overlaying 308-type metal. A relatively large amount of ferrite is contained in the structure, for low cracking susceptibility and excellent heat and corrosion resistance. Suitable for welding diluted base materials such as carbon steels, etc.