ASME B16.5 Flange P-T Ratings

Pressure–temperature ratings for 44 material groups per ASME B16.5-2017 with linear interpolation calculator.

P-T Rating Calculator

Select a material group and flange class, enter temperature — get the interpolated maximum rated pressure per ASME B16.5-2017

Material Group

Flange Class

Temperature (°F)

Rating Tables

Select Material Group to View Table

Temp (°F)	Class 150	Class 300	Class 400	Class 600	Class 900	Class 1500	Class 2500

Source: ASME B16.5-2017, Mandatory Appendix II. All pressures in psig. Verify against current edition for critical applications.

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