Research on Intergranular Corrosion of TP321 Seamless Stainless Steel Pipe

Analyzed here in the article are the factors affecting intergranular corrosion resistance of the TP321 seamless stainless steel pipe, involving such aspects as chemical composition, metallographic structure, process flow, heat treatment schedule, etc.Accordingly, relevant actions are taken to eliminate the negative effects.Thanks to implementation of improvement actions like chemical composition control, adjusting heat treatment schedule, and optimizing the degreasing process, etc., the primary qualification rate of intergranular corrosion test to the TP321 seamless steel pipes has been kept at the level above 95%.