Duplex and Super Duplex UNS S32760 Nuts

Duplex and Super Duplex UNS S32760 Nuts are high-performance threaded fasteners manufactured from Super Duplex Stainless Steel (UNS S32760, also known as F55 or Zeron 100). Zeron Fasteners specializes in supplying these durable nuts, which are engineered to secure bolts and stud bolts in the most aggressive industrial settings. The product is characterized by its high mechanical strength (approximately twice that of standard austenitic stainless steel) and outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-bearing environments. [Image of Super Duplex Nuts] The primary application of these UNS S32760 Nuts is in critical flange bolting for desalination plants, chemical tankers, offshore oil and gas platforms, and pulp and paper equipment, where conventional stainless steels fail due to chloride attack.

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UNS S32760 Nuts

Duplex and Super Duplex UNS S32760 Nuts Chemical Composition

Element Content (%)
Chromium (Cr) 24.0–26.0
Nickel (Ni) 6.0–8.0
Molybdenum (Mo) 3.0–4.0
Copper (Cu) 0.5–1.0
Tungsten (W) 0.5–1.0
Nitrogen (N) 0.20–0.30
Carbon (C) 0.030 max

Duplex and Super Duplex UNS S32760 Nuts Mechanical Properties

Property Value
Tensile Strength (min) 750 MPa (109 ksi)
Yield Strength (0.2% Offset min) 550 MPa (80 ksi)
Elongation in 4D (min) 25%
Hardness (Brinell max) 275 HB

Duplex and Super Duplex UNS S32760 Nuts Products Feature