When welding SS304 to SS321 materials, the recommended filler metal is usually an austenitic stainless steel filler metal, such as AWS A5.9 ER321 or ER347.
AWS A5.9 ER321 is a titanium-stabilized austenitic stainless steel filler metal designed for welding 321 and 347 stainless steels. It has good oxidation and corrosion resistance and can be used for welding in high-temperature applications.
AWS A5.9 ER347 is a niobium-stabilized austenitic stainless steel filler metal designed for welding 321 and 347 stainless steels. It has excellent high-temperature strength and oxidation resistance, making it suitable for welding in severe service conditions.
The selection of the filler metal will depend on the specific application and the welding process being used. It is recommended to consult the applicable code or standard and a qualified welding engineer or metallurgist for specific guidance on selecting the appropriate filler metal for your application.
Check AWS D1.6 for guidance--On Wednesday, November 23, 2022 at 12:18:43 PM UTC+3 sujit kumar wrote:Dear expertswhat will be the filler wire for SS304 TO SS321 MATERIALBest RegardsSujit
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