Duplex and Super Duplex UNS S31803 Anchor Fasteners

Duplex and Super Duplex UNS S31803 Anchor Fasteners are specialized high-strength fixing devices manufactured from Duplex Stainless Steel (Alloy 2205 / UNS S31803). These fasteners are engineered for anchoring equipment, machinery, and structural components into concrete or masonry in highly corrosive environments. Their composition provides exceptional resistance to chloride stress corrosion cracking, high resistance to pitting, and nearly twice the yield strength of common austenitic stainless steel grades. Zeron Fastners supplies these anchors in various types, including wedge anchors, drop-in anchors, and anchor bolts, making them indispensable for use in offshore drilling platforms, chemical processing plants, bridges, and marine facilities where reliable, long-term anchoring is crucial.

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Duplex S31803 Hex Bolts Duplex S32205 Stud Bolts Super Duplex S32750 Nuts Super Duplex S32760 Screws Duplex S31803 Washers Duplex S31803 Threaded Rods
UNS S31803 Anchor Fasteners

Duplex and Super Duplex UNS S31803 Anchor Fasteners 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 Anchor Fasteners 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 Anchor Fasteners Feature Products

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

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