EN 10217-2 — Pressure welded steel pipe - high temperature performance steel
Grades
P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10
Chemical composition and mechanical properties
| Grade | Chemical composition | Mechanical properties |
|---|---|---|
| P235GH | C≤0.16, Mn 0.40-1.20, Si≤0.35, P≤0.025, S≤0.020, Cr≤0.30, Cu≤0.30, Mo≤0.08, Ni≤0.30, Nb≤0.02, Ti≤0.03, V≤0.02, Al≥0.020, N≤0.012, Cr+Cu+Mo+Ni≤0.70 | Rm 360-480 MPa, Rp0.2 ≥195 (≤16mm) to 185, A≥24%, Akv≥27J at 20℃ (wall thickness≤60mm) |
| P265GH | C≤0.20, Mn 0.50-1.40, Si≤0.40, P≤0.025, S≤0.020, Cr≤0.30, Cu≤0.30, Mo≤0.08, Ni≤0.30, Nb≤0.02, Ti≤0.03, V≤0.02, Al≥0.020, N≤0.012, Cr+Cu+Mo+Ni≤0.70 | Rm 410-530 MPa, Rp0.2 ≥215 (≤16mm) to 205, A≥22%, Akv≥27J at 20℃ |
| 16Mo3 | C 0.12-0.20, Mn 0.40-0.90, Si≤0.35, P≤0.025, S≤0.020, Cr≤0.30, Cu≤0.30, Mo 0.25-0.35, Ni≤0.30, N≤0.012 | Rm 440-590 MPa, Rp0.2 ≥275 (≤16mm) to 265, A≥22%, Akv≥31J at 20℃ |
Application scope
EN 10217-2 specifies non-alloy and alloy welded steel pipes for high-temperature pressure equipment, including P235GH, 16Mo3, and various chromium-molybdenum steel grades. The standard emphasizes high-temperature strength and creep resistance, and is applicable to welded pressure piping systems, serving the boiler and high-temperature process piping manufacturing fields. Appropriate grades and delivery conditions can be selected according to specific operating conditions.
Typical applications
Commonly used in steam pipelines, high-temperature process pipelines, and boiler pipelines, as well as in the manufacture of heat exchanger shells and pressure-bearing components. From non-alloy to chromium-molybdenum series, selection is based on temperature. Welded and formed, it possesses good high-temperature strength and creep resistance, making it suitable for pressure-bearing pipelines, piping systems, and components under high-temperature and high-pressure conditions. It is a commonly used material for related pressure-bearing equipment and pipelines.
