Post by ND Engineering and Maintenance Services (Pty) Ltd

A 3-metre diameter ducting section. Fabricated in SAF 2205 duplex stainless steel.​ ​ At this scale, the physical size is only part of the challenge. Duplex materials like SAF2205 require a specific fabrication approach — they behave differently to standard austenitic stainless steels during welding and forming, and getting it wrong affects the material's properties in service, not just its appearance.​ ​ SAF 2205 is specified for demanding environments because of its combination of high strength and corrosion resistance. It typically offers around double the yield strength of standard 316L, which has real implications for wall thickness and overall weight in large components.​ ​ Lead time for this unit was 6 to 8 weeks from fabrication to completion.​ ​ What are you currently fabricating in duplex? Let us know in the comments.​