A106 Gr. A Pipe MAWP Calculator

ASTM A106-A Steel Pipe SMLS

Pressure Ratings > Pipe MAWP > A106 Gr. A

Material Properties

Specification

A106 Gr. A

Description

ASTM A106-A Steel Pipe SMLS

Tensile Strength

48 ksi

Yield Strength

30 ksi

B16.5 Flange Group

Group 1.3 — Alloy Steel C-Si

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	5,327	5,327	5,327	5,327	5,327	5,094	4,162	3,063
1/4	0.54	5,151	5,151	5,151	5,151	5,151	4,925	4,024	2,962
3/8	0.675	4,168	4,168	4,168	4,168	4,168	3,986	3,256	2,397
1/2	0.84	3,996	3,996	3,996	3,996	3,996	3,821	3,122	2,298
3/4	1.05	3,259	3,259	3,259	3,259	3,259	3,116	2,546	1,874
1	1.315	3,048	3,048	3,048	3,048	3,048	2,914	2,381	1,752
1 1/4	1.66	2,510	2,510	2,510	2,510	2,510	2,400	1,961	1,443
1 1/2	1.9	2,257	2,257	2,257	2,257	2,257	2,159	1,764	1,298
2	2.375	1,902	1,902	1,902	1,902	1,902	1,819	1,486	1,094
2 1/2	2.875	2,080	2,080	2,080	2,080	2,080	1,989	1,625	1,196
3	3.5	1,806	1,806	1,806	1,806	1,806	1,727	1,411	1,038
3.5	4	1,647	1,647	1,647	1,647	1,647	1,575	1,287	947
4	4.5	1,531	1,531	1,531	1,531	1,531	1,464	1,196	880
5	5.563	1,342	1,342	1,342	1,342	1,342	1,283	1,049	772
6	6.625	1,219	1,219	1,219	1,219	1,219	1,166	953	701
7	7.625	1,137	1,137	1,137	1,137	1,137	1,087	888	654
8	8.625	1,073	1,073	1,073	1,073	1,073	1,026	839	617
9	9.625	1,020	1,020	1,020	1,020	1,020	976	797	587
10	10.75	974	974	974	974	974	931	761	560
12	12.75	841	841	841	841	841	804	657	483
14	14	764	764	764	764	764	731	597	439
16	16	667	667	667	667	667	638	521	384
18	18	592	592	592	592	592	566	462	340
20	20	532	532	532	532	532	509	416	306
22	22	483	483	483	483	483	462	377	278
24	24	442	442	442	442	442	423	346	254
26	26	408	408	408	408	408	390	319	235
28	28	379	379	379	379	379	362	296	218
30	30	353	353	353	353	353	338	276	203
36	36	294	294	294	294	294	281	230	169
42	42	252	252	252	252	252	241	197	145
44	44	240	240	240	240	240	230	188	138
46	46	230	230	230	230	230	220	179	132
48	48	220	220	220	220	220	210	172	126

Custom Wall Thickness

NPS

Wall Thickness (in)

Allowable Stress vs Temperature

Matching Flange Group

Group 1.3 — Alloy Steel C-Si(A352 LCB, A217 WC1, A352 LC1, A515-65, A516-65, A203 A/D)

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.