Duplex and Super Duplex UNS S31803 Rivets

Duplex and Super Duplex UNS S31803 Rivets are permanent mechanical fasteners made from Duplex Stainless Steel (Alloy 2205 / UNS S31803). Designed for permanent assembly where disassembly is not required, these rivets form strong, shear-resistant joints. The Duplex 2205 material offers high strength and excellent resistance to localized corrosion, particularly in environments containing chlorides. Zeron Fastners supplies these rivets in various head styles, including snap, countersunk, and blind types, ensuring suitability for demanding applications in shipbuilding, structural engineering, chemical tanks, and pressure vessels where vibration resistance and material integrity are paramount.

Related Products

Duplex S31803 Hex Bolts Duplex S32205 Stud Bolts Super Duplex S32750 Nuts Duplex S31803 Pipe Fittings Duplex S31803 Washers Duplex S31803 Threaded Rods
UNS S31803 Rivets

Duplex and Super Duplex UNS S31803 Rivets Chemical Composition

Element Content (%)
Carbon (C) 0.030 max
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Phosphorus (P) 0.030 max
Sulfur (S) 0.020 max
Chromium (Cr) 21.0 – 23.0
Nickel (Ni) 4.5 – 6.5
Molybdenum (Mo) 2.5 – 3.5
Nitrogen (N) 0.08 – 0.20

Duplex and Super Duplex UNS S31803 Rivets Mechanical Properties

Property Value
Tensile Strength (min) 620 MPa (90 ksi)
Yield Strength (0.2% Offset min) 450 MPa (65 ksi)
Elongation in 4D (min) 25%
Hardness (Brinell max) 290 HB

Duplex and Super Duplex UNS S31803 Rivets Feature Products

Super Duplex S32750 Flanges Monel 400 Socket Cap Screws SS 316 Pipe Fittings Alloy Steel Cap Screws

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