EN 10216-2 (船用级) — Marine high-temperature seamless steel pipe
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 10216-2 is a marine-grade standard for seamless steel tubes used in high-temperature pressure equipment on ships and offshore platforms, including grades such as P235GH, P265GH, and molybdenum-chromium alloy steels such as 16Mo3, 13CrMo4-5, and 10CrMo9-10. This standard specifies the composition, high-temperature strength, and impact requirements for high-temperature service, offering good high-temperature performance and weldability, and is suitable for high-temperature pressure piping where welding is the primary method of application.
Typical applications
Commonly used in high-temperature and pressure-bearing components such as marine boiler tubes, steam pipes, engine room high-temperature pipes, and offshore platform process pipes. Non-alloy grades are used for medium-temperature conditions, while molybdenum-chromium alloy grades are used for higher temperatures. With excellent high-temperature strength, creep resistance, and weldability, it is suitable for power and process pipes on ships and offshore platforms that operate under high-temperature and high-pressure steam and hot media for extended periods.
