Duplex, super duplex and hyper duplex grades combine austenitic and ferritic microstructures in roughly equal proportion, around 50:50.
This balance draws the most favourable properties from each phase: high strength, excellent corrosion resistance, relatively easy fabrication and good resistance to stress corrosion cracking.
Compared with other stainless steels, and even some nickel alloys, duplex grades are highly cost-effective, which is why they are so widely used.
Duplex, super duplex and hyper duplex grades combine austenitic and ferritic microstructures in roughly equal proportion, around 50:50. This balanced two-phase structure is what distinguishes duplex stainless steels from the purely austenitic or ferritic families, and it is the source of their particular combination of properties.
Combining austenitic and ferritic phases draws the most favourable properties from each: high strength, excellent corrosion resistance, relatively easy fabrication and good resistance to stress corrosion cracking. This balance is what makes duplex grades suitable across such a wide range of demanding applications.
Compared with other stainless steels, and even some nickel alloys, duplex grades are highly cost-effective. That combination of strong performance and competitive pricing is the main reason duplex, super duplex and hyper duplex stainless steels are so widely specified across demanding industries.
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