A106 Gr. B Pipe MAWP Calculator

ASTM A106-B Steel Pipe SMLS

Pressure Ratings > Pipe MAWP > A106 Gr. B

Material Properties

Specification

A106 Gr. B

Description

ASTM A106-B Steel Pipe SMLS

Tensile Strength

60 ksi

Yield Strength

35 ksi

B16.5 Flange Group

Group 1.1 — Carbon Steel

Y Coefficient

Ref 3 — Ferritic steels

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 °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	6,659	6,659	6,659	6,626	6,326	5,960	5,560	3,796
1/4	0.54	6,438	6,438	6,438	6,406	6,116	5,762	5,376	3,670
3/8	0.675	5,210	5,210	5,210	5,184	4,950	4,663	4,351	2,970
1/2	0.84	4,995	4,995	4,995	4,970	4,746	4,471	4,171	2,847
3/4	1.05	4,074	4,074	4,074	4,053	3,870	3,646	3,401	2,322
1	1.315	3,810	3,810	3,810	3,791	3,619	3,410	3,181	2,171
1 1/4	1.66	3,137	3,137	3,137	3,121	2,980	2,808	2,619	1,788
1 1/2	1.9	2,822	2,822	2,822	2,808	2,681	2,526	2,356	1,608
2	2.375	2,377	2,377	2,377	2,365	2,259	2,128	1,985	1,355
2 1/2	2.875	2,600	2,600	2,600	2,587	2,470	2,327	2,171	1,482
3	3.5	2,258	2,258	2,258	2,246	2,145	2,020	1,885	1,287
3.5	4	2,059	2,059	2,059	2,049	1,956	1,843	1,719	1,174
4	4.5	1,914	1,914	1,914	1,904	1,818	1,713	1,598	1,091
5	5.563	1,678	1,678	1,678	1,669	1,594	1,502	1,401	956
6	6.625	1,524	1,524	1,524	1,517	1,448	1,364	1,273	869
7	7.625	1,421	1,421	1,421	1,414	1,350	1,272	1,186	810
8	8.625	1,342	1,342	1,342	1,335	1,275	1,201	1,120	765
9	9.625	1,275	1,275	1,275	1,269	1,212	1,141	1,065	727
10	10.75	1,217	1,217	1,217	1,211	1,156	1,089	1,016	694
12	12.75	1,051	1,051	1,051	1,046	998	941	878	599
14	14	955	955	955	951	908	855	798	545
16	16	834	834	834	830	792	746	696	475
18	18	740	740	740	736	703	662	618	422
20	20	665	665	665	662	632	595	555	379
22	22	604	604	604	601	574	540	504	344
24	24	553	553	553	550	525	495	462	315
26	26	510	510	510	507	484	456	426	291
28	28	473	473	473	471	450	424	395	270
30	30	441	441	441	439	419	395	369	252
36	36	367	367	367	365	349	329	307	209
42	42	314	314	314	313	299	281	263	179
44	44	300	300	300	299	285	269	251	171
46	46	287	287	287	286	273	257	240	164
48	48	275	275	275	274	261	246	230	157

Custom Wall Thickness

NPS

Wall Thickness (in)

Allowable Stress vs Temperature

Matching Flange Group

Group 1.1 — Carbon Steel(A105, A350 LF2, A216 WCB, A515-70, A516-70, A537 Cl.1)

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.