Duplex and Super Duplex UNS S32205 Washers

Duplex and Super Duplex UNS S32205 Washers are thin, flat, or tapered disk components used in conjunction with bolts and nuts. Their primary function is to distribute the load of a threaded fastener evenly across the fastening surface, preventing damage and ensuring a secure connection. Manufactured from Duplex Stainless Steel UNS S32205 (Alloy 2205), these washers offer high mechanical strength and exceptional corrosion resistance, particularly against pitting corrosion and chloride stress corrosion cracking, making them essential for critical bolted assemblies in marine, offshore, and chemical processing facilities. Zeron Fastners supplies these washers in various forms, including flat, spring lock, and customized dimensions.

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UNS S32205 Washers

Duplex and Super Duplex UNS S32205 Washers 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 S32205 Washers 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 S32205 Washers Feature Products