Is a vessel's maximum pressure rating affected by temperature?

The maximum pressure rating of a vessel is inherently related to both the material properties and the temperature at which it operates. As temperature increases, the strength of the materials used in the construction of the vessel typically decreases, which can cause the maximum allowable pressure to be affected.

When assessing a vessel's safety and operational limits, it is crucial to understand that high temperatures can lead to reduced material integrity, potentially resulting in failure under pressure even if the nominal pressure rating remains unchanged at lower temperatures.

Therefore, the assertion that the maximum pressure rating is independent of temperature is not accurate, since temperature does have a significant impact on the physical properties of materials, and thus influences the maximum pressure ratings assigned to vessels.