Filler Metal For Dissimilar Welding. Over the years Rolled Alloys has gathered information on weldability and performance to generate a list of filler metal options for dissimilar welding. The filler metal must match the strength oxidation resistance carburization resistance etc.
Dissimilar materials welding refers to the joining of. An example of that is when you weld 316L to 304L a 316L filler material should be used. Another method of joining dissimilar metals is the use of a composite insert between the two metals at the weld joint.
This higher ferrite content can minimize weld dilution and prevent weld cracking.
Duplex stainless steel filler metals with increased nickel content relative to the base metal are most frequently used. TIG welding is compatible with similar filler metals like those of MIG welding and MAG welding mainly aluminium bronze. Low-hydrogen filler metals that provide 70 ksi tensile strength such as E71T-1 flux-cored wire or 7018 stick electrodes are typically good choices for dissimilar welding applications involving A36 steel. This higher ferrite content can minimize weld dilution and prevent weld cracking.