EN 10216-2 — Seamless steel pipes for pressure applications - High-temperature performance steel
Grades
P195GH, P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10, 14MoV6-3, X10CrMoVNb9-1(T91)
Chemical composition and mechanical properties
| Grade | Chemical composition | Mechanical properties |
|---|---|---|
| P195GH | C≤0.13, Mn 0.30-0.80, Si≤0.35, P≤0.025, S≤0.020, Cr≤0.30, Cu≤0.30, Mo≤0.08, Ni≤0.30, Al≥0.020, N≤0.012 | Rm 320-440 MPa, Rp0.2 ≥195 (≤16mm) to 185, A≥27%, Akv≥27J at 20℃ |
| 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℃ |
Application scope
EN 10216-2 specifies non-alloy and alloy seamless steel pipes for high-temperature pressure equipment, including carbon molybdenum steel and chromium molybdenum steel, which are usually delivered normalized or normalized and tempered. Grades include P235GH, 16Mo3, 13CrMo4-5, 10CrMo9-10, etc. The higher the alloy content, the better the high-temperature strength and creep resistance.
Typical applications
Widely used in high-temperature pressure pipelines such as boiler tubes, superheater tubes, steam pipelines, petrochemical high-temperature process pipes, and heat exchanger tubes. Covering different temperature grades from carbon steel to chromium-molybdenum steel, it combines good high-temperature strength and weldability, making it suitable for flexible selection of heating surfaces and conveying piping systems according to working conditions. It is a commonly used series of high-temperature pressure steel pipes in the European standard system.
