2205 Duplex Steel I-Beam (standard GB/T 706-2016, 022Cr23Ni5Mo3N) consists of 50% austenite + 50% ferrite, with a yield strength ≥450 MPa (twice that of 304 stainless steel) and a PREN value ≥40.
| Element | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| Content % | 0.03 | 1 | 2 | 0.035 | 0.03 | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.08–0.20 |
Physical Properties: Density 7.8 g/cm³, melting point 1300–1390 °C, thermal conductivity 25 W/(m·K) (20 °C).
Mechanical Properties (Annealed): Tensile strength ≥620 MPa, yield strength ≥450 MPa, elongation ≥25%, hardness ≤290 HB.
Chemical Properties: No pitting in 3.5% NaCl solution; 50% higher resistance to crevice corrosion than 316L.
Reference cross-section sizes (GB/T 706-2016):
| Model (h×b×d) | Height h (mm) | Flange Width b (mm) | Web Thickness d (mm) | Theoretical Weight (kg/m) |
|---|---|---|---|---|
| I16# | 160 | 88 | 6 | 20.513 |
| I25a# | 250 | 116 | 8 | 38.105 |
| I40a# | 400 | 142 | 10.5 | 67.598 |
Length: Custom 6–12 m, standard tolerance ±5 mm, minimum order 200 kg.
Surface: Hot-rolled pickled, passivated (enhanced corrosion resistance).
Stainless Steel Profiles on Storage Racks
Spectrometer for Alloy Composition Analysis
Profile Weighing with Crane Scale
Factory Stacking of Stainless Steel Profiles
Packaged Stainless Steel Profiles for Shipment
Worker Loading Profiles onto Truck
Support beam for a petroleum cracking unit (I40a# I-beam, bearing 10 MPa pressure and H₂S corrosion).
Deck support of a drilling platform (I25a# I-beam, resistant to seawater and wave impact, 15 years corrosion-free).
Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.
