Super Duplex UNS S32750/S32760

Super Duplex
UNS S32750 / S32760

Stainalloy has been supplying Super Duplex pipe materials for over 25 years. With these years of experience, Stainalloy has built up unparalleled technical know-how and excellent relationships with leading manufacturers.

Super Duplex UNS S32750/S32760

Super Duplex UNS S32750/S32760 is an austenitic-ferritic stainless steel. Super Duplex UNS S32750/S32760 offers excellent corrosion resistance against pitting and crevice corrosion. The chemical composition and the high chromium and molybdenum content of Super Duplex UNS S32750/S32760 ensure high tensile strengths. In addition, the chemical composition exhibits high thermal conductivity and low thermal expansion. Thus, the properties of Super Duplex UNS S32750/S32760 exceed all ordinary austenitic ferritic stainless steels.

Super Duplex UNS S32750/S32760 offers many advantages. One of these advantages is that the pipe material is easier to weld thanks to the mixing structure of austenite and ferrite. In addition, Super Duplex UNS S32750/S32760 has superior mechanical properties and significantly better resistance to stress corrosion cracking in chloride-containing environments. Thanks to its high chromium and molybdenum content, - Super Duplex UNS S32750/S32760 achieves PREN values between 38-46.

Important characteristics


Super Duplex UNS S32750/S32760 is characterized by:

  • High resistance to stress corrosion cracking in halide-containing environments
  • High resistance to pitting and crevice corrosion
  • High yield strength and tensile strength
  • High resistance to general corrosion
  • High thermal conductivity and low thermal expansion
  • High mechanical strength
  • High resistance to erosion, corrosion and corrosion fatigue

Application

Super Duplex UNS S32750/S32760 is used in many different sectors such as energy industry, chemical industry, shipping industry, pulp and paper production, water desalination industry, oil and gas production and petrochemistry. But also, for fire-fighting systems and high-pressure RO plants. In addition, Super Duplex UNS S32750/S32760 is often used in pressure vessels, structural components and chemical tankers.

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Stainalloy

Stainalloy supplies its large Super Duplex pipe packs worldwide. These pipe packs are designed for the oil and gas producing and processing industries. Stainalloy also supplies medium sized piping packages from stock during the advanced construction phase, when short lead times are required.

Stainalloy has a full stock programme of Super Duplex UNS S32750/S32760 piping materials. This stock programme consists of seamless and welded pipes, seamless and welded fittings and forgings and forged flanges from ½" up to and including 48". Stainalloy stocks are manufactured in accordance with ASTM requirements: seamless pipe ASTM A790 UNS S32750/S32760, welded pipe ASTM A928 UNS S32750/S32760, seamless & welded fittings ASTM A815 UNS S32750/S32760 and forgings & forged flanges ASTM A182 F53.

Stainalloy Stock Programme

Our customers benefit from a Super Duplex stainless steel stock programme. Stainalloy's stainless steel is subjected to the most stringent testing requirements exceeding Norsok M630 and Shell MESC specifications. All Super Duplex stocks are manufactured exclusively by Norsok M650 approved mills. Stainalloy's stock programme is particularly suited to customers undertaking construction projects in the upstream oil and gas and seawater desalination industries.

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