Duplex Steel Socket Head Cap Screws

Zeron Fasteners manufactures superior Duplex Steel Socket Head Cap Screws offering a unique combination of high strength and excellent corrosion resistance. These screws are widely used in chemical processing, marine, oil & gas, and power generation industries. With a dual-phase microstructure of austenite and ferrite, duplex steel provides exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion while maintaining excellent mechanical properties.

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Duplex Steel Socket Head Cap Screws

Duplex Steel Socket Head Cap Screws Chemical Composition

ElementTypical Range (%)
Chromium (Cr)21 – 23
Nickel (Ni)4.5 – 6.5
Molybdenum (Mo)2.5 – 3.5
Nitrogen (N)0.10 – 0.22
Carbon (C)≤ 0.03
Manganese (Mn)≤ 2.00

Duplex Steel Socket Head Cap Screws Mechanical Properties

PropertyValue
Tensile Strength620 – 880 MPa
Yield Strength450 – 620 MPa
Elongation≥ 25 %
Hardness≤ 290 HB

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