B444 N06625 Pipe MAWP Calculator

ASTM B444 Gr-1, N06625 (625) Pipe SMLS, 60Ni-22Cr-9Mo-3.5Cb, annealed

Pressure Ratings > Pipe MAWP > B444 N06625

Material Properties

Specification

B444 N06625

Description

ASTM B444 Gr-1, N06625 (625) Pipe SMLS, 60Ni-22Cr-9Mo-3.5Cb, annealed

Tensile Strength

120 ksi

Yield Strength

60 ksi

B16.5 Flange Group

Group 3.8 — Ni-Cr-Mo Alloys

Min Design Temperature

-325 °F

Y Coefficient

Ref 5 — Other ductile metals

Calculator Settings

Corrosion Allowance (in)

Mill Tolerance (%)

Units

Schedule Selection

STDXSXXS10S40S80S2030406080120140160

Temperature Selection

100 °F150 °F200 °F250 °F300 °F350 °F400 °F450 °F500 °F550 °F600 °F650 °F700 °F750 °F800 °F850 °F900 °F950 °F1000 °F1050 °F1100 °F1150 °F1200 °F

Maximum Allowable Working Pressure (psig)

NPS	OD (in)	100 °F	200 °F	300 °F	400 °F	500 °F	600 °F	700 °F	800 °F
1/8	0.405	13,318	13,318	13,185	13,052	12,852	12,586	12,320	12,086
1/4	0.54	12,876	12,876	12,747	12,619	12,426	12,168	11,911	11,685
3/8	0.675	10,420	10,420	10,316	10,212	10,056	9,847	9,639	9,457
1/2	0.84	9,991	9,991	9,891	9,791	9,641	9,441	9,242	9,067
3/4	1.05	8,147	8,147	8,066	7,984	7,862	7,699	7,536	7,393
1	1.315	7,619	7,619	7,543	7,467	7,353	7,200	7,048	6,914
1 1/4	1.66	6,274	6,274	6,211	6,149	6,054	5,929	5,803	5,694
1 1/2	1.9	5,644	5,644	5,587	5,531	5,446	5,333	5,220	5,122
2	2.375	4,755	4,755	4,707	4,660	4,588	4,493	4,398	4,315
2 1/2	2.875	5,200	5,200	5,148	5,096	5,018	4,914	4,810	4,719
3	3.5	4,515	4,515	4,470	4,425	4,357	4,267	4,176	4,097
3.5	4	4,118	4,118	4,077	4,036	3,974	3,891	3,809	3,737
4	4.5	3,828	3,828	3,790	3,751	3,694	3,617	3,541	3,474
5	5.563	3,355	3,355	3,322	3,288	3,238	3,171	3,104	3,045
6	6.625	3,049	3,049	3,018	2,988	2,942	2,881	2,820	2,767
7	7.625	2,842	2,842	2,813	2,785	2,742	2,686	2,629	2,579
8	8.625	2,683	2,683	2,657	2,630	2,590	2,536	2,482	2,435
9	9.625	2,551	2,551	2,525	2,500	2,461	2,410	2,359	2,315
10	10.75	2,435	2,435	2,410	2,386	2,349	2,301	2,252	2,209
12	12.75	2,102	2,102	2,081	2,060	2,029	1,986	1,944	1,908
14	14	1,911	1,911	1,892	1,873	1,844	1,806	1,768	1,734
16	16	1,668	1,668	1,651	1,635	1,610	1,576	1,543	1,514
18	18	1,480	1,480	1,465	1,450	1,428	1,399	1,369	1,343
20	20	1,330	1,330	1,317	1,303	1,283	1,257	1,230	1,207
22	22	1,208	1,208	1,196	1,183	1,165	1,141	1,117	1,096
24	24	1,106	1,106	1,095	1,084	1,067	1,045	1,023	1,004
26	26	1,020	1,020	1,010	1,000	984	964	943	926
28	28	946	946	937	927	913	894	875	859
30	30	883	883	874	865	852	834	817	801
36	36	735	735	727	720	709	694	679	667
42	42	629	629	623	616	607	594	582	571
44	44	600	600	594	588	579	567	555	545
46	46	574	574	568	562	554	542	531	521
48	48	550	550	544	539	531	520	509	499

Custom Wall Thickness

NPS

Wall Thickness (in)

Allowable Stress vs Temperature

Matching Flange Group

Group 3.8 — Ni-Cr-Mo Alloys(B462 N10276, B564 N06625, B564 N08825, B462 N06022)

Disclaimer: This calculator is for guidance only. Results are based on ASME B31.3-2024 allowable stresses for seamless pipe (Ej=1.0, W=1.0). Always verify against the current edition of the standard. The engineer of record is responsible for all design decisions.