What is the maximum temperature for P265GH pipe
According to the relevant standards and material performance specifications, the maximum long-term service temperature of P265GH under EN10216-2 is 400°C. It can withstand higher temperatures in the short term, but it needs to be evaluated in conjunction with specific working conditions and design specifications.
Core performance support
High temperature stability
Reduce the risk of grain boundary embrittlement at high temperatures through low phosphorus (P≤0.025%) and low sulphur (S≤0.015%) composition control.
Normalising treatment (890℃-950℃) optimises grain structure and improves creep resistance.
Mechanical properties
At 400℃, the yield strength is stable at ≥265MPa, and the tensile strength is 410-530MPa.
Low temperature toughness up to standard: -20 ℃ impact work ≥ 27J, room temperature ≥ 40J.
Application Limitations
Temperature sensitivity: long-term temperature fluctuations may lead to material fatigue, need to be designed with thermal stress analysis.
Differences in standards: Some standards (e.g. EN10028-2) may have slightly different long-term temperature limits (some data labelled as 350°C), subject to specific project design requirements.
Summary
P265GH materials under EN10216-2 are suitable for long-term high-temperature environments below 400℃, and are mainly used in pressure pipelines, boilers and chemical equipment. The actual selection should be verified with the design specification, working conditions and material test report.
