Group 3.4: Monel 400 (67Ni-30Cu)

ASME B16.5-2020 Pressure-Temperature Ratings

Pressure Ratings > Flange > Group 3.4 — Monel 400 (67Ni-30Cu)

Units

Group 3.4: Monel 400 (67Ni-30Cu)

Materials: B564/B127 N04400

Pressure-Temperature Curve

Class 150
Class 1500
Class 2500
Class 300
Class 400
Class 600
Class 900

Interpolation Calculator

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

Class

Temperature

Group 3.4 Pressure-Temperature Ratings (psig)

Temp (°F)	Class 150	Class 300	Class 400	Class 600	Class 900	Class 1500	Class 2500
−20	230	600	800	1,200	1,800	3,000	5,000
100	230	600	800	1,200	1,800	3,000	5,000
200	200	525	700	1,050	1,575	2,630	4,380
300	190	490	655	980	1,470	2,450	4,080
400	180	475	630	945	1,420	2,365	3,940
500	170	475	630	945	1,420	2,365	3,940
600	140	475	630	945	1,420	2,365	3,940
650	125	475	630	945	1,420	2,365	3,940
700	110	470	625	940	1,410	2,350	3,920
750	95	465	620	930	1,395	2,330	3,880
800	80	460	610	915	1,375	2,290	3,820
850	65	375	505	755	1,130	1,885	3,145
900	50	275	365	550	825	1,370	2,285

Matching Pipe Materials — MAWP Calculators

B165 N04400

ASTM B165 N04400 (400 Monel) Pipe SMLS 67Ni-30Cu, <=5" O.D. annealed

OD <= 5 in.

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.

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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