Group 1.7: Alloy Steel Cr-Mo

ASME B16.5-2020 Pressure-Temperature Ratings

Pressure Ratings > Flange > Group 1.7 — Alloy Steel Cr-Mo
Group 1.7: Alloy Steel Cr-Mo
Materials: A182 F2, A217 WC4/WC5

Pressure-Temperature Curve

  • Class 150
  • Class 1500
  • Class 2500
  • Class 300
  • Class 400
  • Class 600
  • Class 900
-2010020030040050060065070075080085090095010001050Temperature (°F)02000400060008000Pressure (psig)

Interpolation Calculator

Calculate allowable working pressure at any intermediate temperature by linear interpolation.

Group 1.7 Pressure-Temperature Ratings (psig)

Temp (°F)Class 150Class 300Class 400Class 600Class 900Class 1500Class 2500
−202907501,0001,5002,2503,7506,250
1002907501,0001,5002,2503,7506,250
2002607501,0001,5002,2503,7506,250
3002307309701,4552,1853,6406,070
4002007059401,4102,1153,5305,880
5001706658851,3301,9953,3255,540
6001406058051,2101,8153,0255,040
6501255907851,1751,7652,9404,905
7001105707551,1351,7052,8404,730
750955307101,0651,5952,6604,430
800805106751,0151,5252,5404,230
850654856509751,4602,4354,060
900504506009001,3502,2453,745
950353154206309451,5752,630
1000202002704056051,0101,685
1050—1602103154757901,315

Matching Pipe Materials — MAWP Calculators

Disclaimer: This chart is for guidance only. The data is from ASME B16.5-2020 and shall not be used for design without verification against the current edition of the standard. Ambient ratings apply from −20 °F (−29 °C) to 100 °F (38 °C). Rows highlighted in blue indicate the ambient temperature range.

References

  • ASME B16.5-2020 — Pipe Flanges and Flanged Fittings: NPS ½ Through NPS 24 Metric/Inch Standard
  • Pressure ratings are maximum allowable non-shock working pressures (psig or bar gauge)
  • Intermediate temperatures may be interpolated linearly between tabulated values
  • Ratings apply to flanged fittings of the designated class, including flanges, flanged valves, and flanged end fittings
  • For temperatures below −20 °F (−29 °C), consult ASME B16.5 for specific material limitations