EN 10216-5 — Seamless steel pipes for pressure applications - Stainless steel
Grades
1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4435, 1.4438, 1.4539, 1.4547, 1.4006, 1.4016, 1.4021, 1.4462, 1.4410
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 |
| 1.4541 | C≤0.08, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.015, N≤0.10, Cr 17.00-19.00, Ni 9.00-12.00, Ti 5×C-0.70 | Rm 520-720 MPa, Rp0.2 ≥220 MPa, A≥40%, austenitic Ti stabilization |
Application scope
EN 10216-5 specifies the technical delivery conditions for seamless stainless steel pipes intended for pressure applications, covering austenitic, ferritic, martensitic, and duplex structures according to the European designation system. The standard specifies mechanical properties at both room and high temperatures, corrosion resistance, and testing requirements, balancing pressure resistance with resistance to corrosion. It is applicable to seamless pressure piping in the chemical, energy, and process industries that requires solution annealing before delivery.
Typical applications
Widely used in pressure-bearing process pipelines, energy plant pipelines, and heat exchanger tubes in the chemical and petrochemical industries, as well as in clean fluid pipelines in the food and pharmaceutical industries. Austenitic varieties meet general corrosion resistance and cleanliness requirements, while duplex and molybdenum-containing varieties are suitable for seawater treatment and high chloride ion environments. Due to the pressure-bearing reliability of seamless pipes, they are often used as pressure vessel nozzles, headers, and process main pipes.
