Duplex and Super Duplex UNS S32750 Flanges

The Duplex and Super Duplex UNS S32750 Flange is a crucial forging component used to create removable, bolted connections within a piping system. Manufactured from the high-performance alloy UNS S32750 (also known as F53 or 2507), these flanges offer an exceptional combination of high mechanical strength and superior corrosion resistance, particularly in environments high in chlorides. The specific types, such as Weld Neck Flanges (best for high pressure/temperature), Slip-On Flanges (easy alignment), and Blind Flanges (for sealing pipe ends), allow for versatile system design. Zeron Fasteners manufactures and supplies these flanges to meet international standards like ASME B16.5 and ASTM A182, making them indispensable in critical applications across the oil & gas, petrochemical, and desalination industries where conventional materials fail due to stress corrosion cracking and pitting.

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UNS S32750 Flanges

Chemical Composition (UNS S32750)

Element Composition (%)
Chromium (Cr) 24.0 to 26.0
Nickel (Ni) 6.0 to 8.0
Molybdenum (Mo) 3.0 to 5.0
Nitrogen (N) 0.24 to 0.32
Carbon (C) Max 0.030
Silicon (Si) Max 0.80
Manganese (Mn) Max 1.20
Phosphorus (P) Max 0.035
Sulfur (S) Max 0.020

Mechanical Properties (UNS S32750)

Property Minimum Value
Ultimate Tensile Strength 800 MPa Min
Yield Strength (0.2% Proof) 550 MPa Min
Elongation (A) 15 % Min
Hardness (HBW Max) 310
Pitting Resistance Equivalent Number (PREN) 40 Min

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