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Best in class welding of duplex steels.
Welding duplex stainless steel requires special considerations due to its dual-phase microstructure, which consists of approximately 50% austenite and 50% ferrite.
This unique composition provides high strength, excellent corrosion resistance, and good toughness, but also makes welding more complex compared to standard stainless steels.
Materials specifications include:
- Duplex Stainless Steels – UNS 31803
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Duplex Stainless Steel (DSS) Applications
Best for: Moderate corrosion environments, cost-effective solutions with good strength.
Industries & Applications:
- Chemical processing – Storage tanks, heat exchangers
- Oil & gas – Pipelines, flowlines, risers
- Water treatment plants – Pipes, pumps
- Food industry – Processing equipment, storage tanks
- Structural applications – Bridges, building supports
Why Choose DSS?
- Good balance of strength, corrosion resistance, and cost
- Suitable for mildly aggressive environments
- Better than austenitic stainless steels (e.g., 316L) in chloride-rich conditions
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