Super Duplex UNS S32760

Material to UNS S32760 is described as a super duplex stainless steel with a microstructure of 50:50 austenite and ferrite.

UNS S32760 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments and has additions of W and Cu compared to UNS S32750. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength.

The characteristic features of high strength and corrosion resistance exhibited by the dual microstructure (50% Austenite, 50% Ferrite) associated with Duplex Stainless Steels, are enhanced by a further addition of Chromium (to 25%), and also Tungsten and Copper.

The alloy's pitting and Crevice Corrosion resistance is better than Standard F51 duplex, The pitting index (PREN) is increased to 40 min from standard F51 Duplex value of 33 min.

Thin sections (Tubulars) are capable of being cold worked to give yield strength of 105 KSI min.

To optimise mechanical properties, avoid clinking, and to avoid deleterious intermetallics within the microstructure; special high temp forming and heat treatment control practices must be followed during processing.

(PREN = % Cr + 3.3% Mo + 16% N)

Typical Applications

High impact strength at sub-zero temperatures, UNS S32760 displays excellent corrosion resistance.

UNS S32760 is characterized by:

High resistance to stress corrosion cracking in halide containing environments.
High resistance to pitting and crevice corrosion.
High resistance to general corrosion.
High mechanical strength.
High resistance to erosion corrosion and corrosion fatigue.

It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.

We offer UNS S32760 Super Duplex Stainless Steel in bar, forgings, sheet, plate, pipe, tube, closed die forgings, flanges and welding consumables.

Processing

We offer processing services throughout the Smiths Group - with more than 30 band saws and a fully automated magazine feed CNC rod blanking line, we can process your material to your exact requirements.