Duplex & Super Duplex
Duplex and super duplex stainless steel combining ferritic and austenitic microstructures for high strength and outstanding resistance to chloride pitting and stress corrosion cracking. Specified across oil and gas, desalination, offshore and chemical tanker applications.
2 grades stocked6 forms availableFull mill certification
Grades in this family
Duplex 2205
UNS S31803 / S32205EN 1.4462
The most widely used duplex grade. Roughly double the yield strength of 316L, allowing thinner and lighter sections while delivering far better chloride stress corrosion cracking resistance.
6 forms available
Super Duplex 2507
UNS S32750 / S32760EN 1.4410 / 1.4501
Super duplex with PREN above 40 for the most aggressive seawater and sour service. S32760 (Zeron 100) adds tungsten and copper for enhanced acid resistance.
5 forms available
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