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HomeStainless Steel UNS S32750 Super Duplex
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UNS S32750 Super Duplex

Alloy 32750 is a super duplex stainless steel supplied in the hot worked and solution annealed condition. As a super duplex stainless steel, it combines the desirable aspects of both austenitic and ferritic grades. The higher chromium, molybdenum and nitrogen contents result in a Pitting Resistance Equivalent number (PREN) of >40, providing pitting and crevice corrosion resistance superior to austenitic and duplex stainless steels in almost all corrosive media, and a Critical Pitting Temperature exceeding 50°C   nb. versions of the PREN formula also include W as a positive influence on overall pitting resistance.

It provides higher strength than both austenitic and 22% Cr duplex stainless steels, and is listed in NACE MR 0175 for sour service and ASME for pressure vessel applications.

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Description

Specifications

Analysis

Carbon : 0.20-0.30%
Manganese : 1.00%
Silicon : 0.10-0.80%
Nickel : 6.00-8.00%
Chromium : 24.00-26.00%
Sulphur : 0.03%
Phosphorous : 0.25%
Molybdenum : 3.00-4.00%

Certification

UNS S32750 grade is available with BS EN 10204 3.1 mill certificate or cast and analysis certification.  Please request any material certificate requirements when placing your order.

Form of Supply

Diameters can be sawn to your required lengths as one offs or multiple cut pieces. UNS S32750 plate and sheet are available to European steel grades, which can be supplied as full plates and sheets or can be cut to your requirements.

Diameters availability are up to 10⌀ – 560⌀.

Sheets availability are up to 1.5mm – 30mm.

Contact our experienced sales team who will assist you with your UNS S32750 stainless steel enquiry.

Applications

UNS S32750 super duplex is used in a wide range of marine, oil and gas environments. UNS S32750 is commonly used in the mining, marine, pharmaceutical, petrochemical and chemical engineering industries. Typical applications include flanges, pumps, valves, chokes, connecters and manifolds.

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