Presenter: Yong-Joo Kim - V.P. Process & Product Innovation (Webco Industries, USA)

Discuss the importance of controlling key variables of the duplex welding using the field weld failure cases. Key reviewing variables are ferrite balance, selection of weld wire, solidification cracking, cooling rate, shielding gas and control of the hardness for H2S application. The case of dissimilar metal welding between S32205 duplex to 304 stainless or nickel alloy, the effect of fusion zone weld microstructure and corrosion performance will be discussed.