en 1.4462 stainless hollow section
What Is EN 1.4462 Stainless Hollow Section?
EN 1.4462 (UNS S31803 / S32205) is a duplex stainless steel that combines austenitic and ferritic microstructures. Hollow sections made from this alloy offer twice the yield strength of austenitic grades like 304/316, along with improved resistance to pitting, crevice, and stress corrosion cracking-especially in chloride-rich environments.
Key Advantages of EN 1.4462 Hollow Sections
In demanding industries like marine engineering, construction, chemical processing, and offshore platforms, selecting the right material for structural components is key to ensuring safety, performance, and longevity. EN 1.4462 stainless hollow section, also known as Duplex 2205 square and rectangular tube, offers an ideal solution where both mechanical strength and corrosion resistance are essential.
High Strength-to-Weight Ratio
2205 Duplex stainless steel rectangular tubes, with up to twice the yield strength of standard austenitic stainless steels, can reduce structural weight without compromising strength.
Excellent corrosion resistance
1.4462 alloy tubes contain about 22% chromium, about 5% nickel and about 3% molybdenum, which is resistant to seawater, brine, wastewater and industrial chemicals. PREN value is about 34–35.
Good weldability
Compatible with TIG, MIG and SAW welding processes. Low risk of thermal cracking, no post-weld heat treatment required.
Cost-Effective Alternative to 316L or Super Duplex
Offers higher performance than 316L in aggressive environments at a moderate price point-ideal for value engineering.
EN 1.4462 stainless Square tube Specifications
| Form | Square & Rectangular Hollow Section |
|---|---|
| Standard | EN 10210 / EN 10219 / ASTM A790 |
| Grade | EN 1.4462 / X2CrNiMoN22-5-3 |
| Sizes | 20×20mm to 300×300mm (or custom) |
| Thickness | 1.5 mm – 12 mm |
| Length | 6 meters standard, or custom |
| Surface Finish | Pickled, Brushed, or Polished |
| Tolerance | As per EN 10219-2 |
| Certificate | EN 10204 3.1 / 3.2, PED, DNV, ABS |
1.4462 square pipe for marine use
Offshore structures – Riser supports, handrails, maintenance platforms
Coastal and marine construction – Piers, docks, boat ramps
Chemical plant structures – Pipe racks, chemical storage frames
Architectural frameworks – High-end facade structures in coastal cities
Wastewater treatment facilities – Resistant to sulfide and chloride attack
duplex stainless hollow section supplie-GNEE
Looking for a stronger, more durable, and corrosion-resistant alternative to 316L?
Our EN 1.4462 hollow sections are stocked in multiple sizes and can be cut, polished, and packaged to your project needs.
We supply EN 1.4462 stainless hollow sections in:
1.Hot finished or cold formed
2.Standard lengths or cut-to-size
3.With mill test certificates and 3rd party inspections
4.Surface finish options for decorative or industrial use
👉 Contact us today to request a technical datasheet, check availability, or receive a competitive quote tailored to your industry.
