EN 10296-2 — Welded stainless steel round tubes for mechanical and engineering applications
Grades
1.4301, 1.4307, 1.4401, 1.4404, 1.4016, 1.4006, 1.4113, 1.4512
Chemical composition and mechanical properties
| Grade | Chemical composition | Mechanical properties |
|---|---|---|
| 1.4301 | C≤0.07, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.015, N≤0.10, Cr 17.50-19.50, Ni 8.00-10.50 | Rm 520-700 MPa, Rp0.2 ≥210 MPa, A≥45%, austenitic |
| 1.4307 | C≤0.030, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.015, N≤0.10, Cr 17.50-19.50, Ni 8.00-10.00 | Rm 520-700 MPa, Rp0.2 ≥200 MPa, A≥45%, austenitic ultra-low carbon |
| 1.4401 | C≤0.07, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.015, N≤0.10, Cr 16.50-18.50, Ni 10.00-13.00, Mo 2.00-2.50 | Rm 530-680 MPa, Rp0.2 ≥220 MPa, A≥40%, austenitic with Mo content |
Application scope
EN 10296-2 specifies the technical delivery conditions for welded stainless steel round tubes for mechanical and general engineering purposes, covering grades with both austenitic and ferritic microstructures. The standard emphasizes the dimensional accuracy, surface condition, and mechanical and formability of the tubes, while also considering corrosion resistance and machinability. Ferritic grades are more economical and have better oxidation resistance, making them suitable for structural load-bearing, decorative, and other round tube products requiring further processing.
Typical applications
Widely used in mechanical structural components and equipment frames, automotive parts and exhaust-related pipe fittings, as well as furniture, decorative components and railings. Austenitic varieties have good corrosion resistance and appearance, while ferritic varieties are economical and can withstand certain high temperatures. With their good formability and weldability, they are often processed into support pipes, connectors and precision instrument components, meeting the dual needs of engineering structures and decoration.
