QUALIFICATION OF WELDING PROCEDURES FOR DUPLEX STAINLESS STEELS

• This TIP reviews the current state of knowledge regarding duplex stainless steels, particularly as it affects their use in the pulp and paper industry. It addresses the definition of testing for qualification of weld procedures that are both technically and economically effective.
• The 2205 duplex stainless steel is far and away the most readily available grade with multiple producers of virtually all product forms and good availability through common metal distribution channels.
• The information will be generally applicable with appropriate modification for other duplex stainless steels and to other vessels and processors built of duplex stainless steels within the pulp and paper industry.

It Provides information on:

• General guidelines for welding duplex stainless steels.
• Selection of starting material.
• Preheating
• Heat input and interpass temperature
• Dissimilar metal welds
• Welding procedure qualification
• Guidelines for testing for procedure qualification

(Appendix A)

Who will benefit:

• Quality Manager.
• Engineers.
• Maintenance Manager.
• Safety Manager.
• Supervisor.