Supreme Steels

Alloy 329 (UNS S32900)

Alloy 329 (UNS S32900) - Duplex Stainless Steel

Alloy 329 is a duplex stainless steel with a balanced combination of ferrite and austenite phases, providing high mechanical strength and excellent resistance to corrosion. It is particularly suited for applications in environments with high chloride content and elevated temperatures, where pitting, crevice corrosion, and stress corrosion cracking are significant concerns.

Features of Alloy 329:

Specifications:

Applicable Standards:

Mechanical Properties:

Property Value
Tensile Strength ~620 MPa
Yield Strength ~450 MPa
Elongation ~20%
Hardness (BHN) ~280
Density 7.8 g/cm³

Thermal Properties:

Chemical Composition:

Element Percentage (%)
Chromium (Cr) 23.0-30.0
Nickel (Ni) 3.0-5.0
Molybdenum (Mo) ≤1.0
Carbon (C) ≤0.08
Silicon (Si) ≤1.0
Manganese (Mn) ≤2.0
Nitrogen (N) ≤0.20