Group 1.3: Alloy Steel C-Si

ASME B16.5-2020 Pressure-Temperature Ratings

Pressure Ratings > Flange > Group 1.3 — Alloy Steel C-Si
Group 1.3: Alloy Steel C-Si
Materials: A352 LCB, A217 WC1, A352 LC1, A515-65, A516-65, A203 A/D

Pressure-Temperature Curve

  • Class 150
  • Class 1500
  • Class 2500
  • Class 300
  • Class 400
  • Class 600
  • Class 900
-201002003004005006006507007508008509009501000Temperature (°F)01500300045006000Pressure (psig)

Interpolation Calculator

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

Group 1.3 Pressure-Temperature Ratings (psig)

Temp (°F)Class 150Class 300Class 400Class 600Class 900Class 1500Class 2500
−202656959301,3952,0903,4805,805
1002656959301,3952,0903,4805,805
2002556608801,3201,9803,3005,505
3002306408501,2751,9153,1905,315
4002006158201,2301,8453,0755,125
5001705857801,1751,7602,9304,885
6001405507351,1051,6552,7554,595
6501255357101,0651,6002,6654,440
7001105106851,0251,5352,5604,270
750954756359551,4302,3853,970
800803905207801,1751,9553,255
850653004005958951,4902,485
900502002704056051,0101,685
950351351852754106851,145
10002085115170255430715

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