en 1.4541 stainless hollow section
Jun 30, 2025
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What Is EN 1.4541 Stainless Hollow Section?
EN 1.4541 is the European designation for X6CrNiTi18-10, also known internationally as AISI 321 stainless steel. It is a titanium-stabilized austenitic stainless steel, designed to resist intergranular corrosion after welding and to withstand elevated temperatures. When formed into stainless hollow sections (i.e., square and rectangular pipes), 1.4541 becomes a versatile structural material for heat-resistant frames, support structures, and fabricated components.
Key Features of EN 1.4541 Hollow Section
Titanium alloys stabilize weldability: Adding ≥5×C% titanium prevents the formation of chromium carbides in the heat-affected zone. Suitable for welded structures in boilers, exchangers and pressure vessels.
Intergranular corrosion resistance: It can pass ASTM A262 specification E without post-weld heat treatment, and is superior to 304 in terms of thermal cycle resistance and weld corrosion resistance.
High temperature performance: Suitable for continuous use temperatures up to 850°C.
Processability: It can be cold formed, polished and laser cut for structural or decorative purposes.
What is 1.4541 stainless steel used for?
Commonly used in welded high-temperature structures, such as heat exchangers, boilers, chimney ducts, and chemical tanks.
Can 1.4541 hollow sections be used outdoors?
Yes, it offers good atmospheric corrosion resistance, similar to 304 stainless steel, and better thermal fatigue resistance.
What is the difference between 1.4541 and 304 hollow section?
1.4541 includes titanium to prevent intergranular corrosion after welding, making it more suitable for high-temperature and pressure applications.
Looking for a reliable EN 1.4541 stainless steel hollow sections supplier for your high temperature structural projects? Gnee offers customized stainless steel solutions, technical data sheets, and factory direct pricing.
Why Choose Gnee ?
Certified to EN 10204 3.1 / PED / AD2000 standards
Support for cut-to-length, polishing, welding, and export packaging
Technical support for high-temperature or welded design projects
EN 1.4541 Stainless Hollow Section Specification
| Shape | Square & Rectangular Hollow Section |
|---|---|
| Grade | EN 1.4541 / X6CrNiTi18-10 / AISI 321 |
| Standard | EN 10296-2 / ASTM A554 (for decorative use) |
| Wall Thickness | 1.0 mm – 6.0 mm |
| Dimensions | 20×20 mm to 150×100 mm (custom sizes available) |
| Finish | 2B, Satin, Mirror (8K), Pickled & Passivated |
| Length | Up to 6000 mm (custom lengths on request) |
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