Duplex and Super Duplex UNS S31803 Couplings

Duplex and Super Duplex UNS S31803 Couplings are small pipe fittings used to connect two pipe sections, often of the same diameter, to maintain the pipeline run. They are available as Full Couplings (threaded internally end-to-end) or Half Couplings (threaded at one end for a branch connection). Manufactured from Duplex Stainless Steel (Alloy 2205 / UNS S31803), these couplings provide exceptional mechanical strength and crucial resistance to chloride-induced stress corrosion cracking, ensuring secure and long-lasting connections. Zeron Fastners supplies these couplings for critical fluid handling systems in offshore, chemical processing, water treatment, and petrochemical industries.

Related Products

Duplex S31803 Hex Bolts Duplex S32205 Stud Bolts Super Duplex S32750 Nuts Duplex S31803 Flanges Duplex S31803 Elbows Duplex S31803 Tees
UNS S31803 Couplings

Duplex and Super Duplex UNS S31803 Couplings 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 Couplings 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 Couplings Feature Products

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

People also Search for UNS S31803 Couplings

UNS S31803 Couplings, Duplex Couplings, S31803 Pipe Connectors, Duplex Stainless Steel Pipe Fittings, UNS S31803 Full Coupling, Duplex Coupler Manufacturer, Duplex S31803 Half Coupling, Zeron Fasteners, Duplex Pipe Fittings India, Duplex 2205 Couplings, S31803 Threaded Coupling, Duplex Couplings Price, Duplex Couplings Mumbai, Duplex Couplings Chennai, Duplex Couplings Hyderabad, Duplex Couplings Bangalore.