A312 TP304L Pipe MAWP Calculator

ASTM A312 TP304L SS Pipe Smls 18Cr-8Ni

Pressure Ratings > Pipe MAWP > A312 TP304L

Material Properties

Specification

A312 TP304L

Description

ASTM A312 TP304L SS Pipe Smls 18Cr-8Ni

Tensile Strength

70 ksi

Yield Strength

25 ksi

B16.5 Flange Group

Group 2.3 — Austenitic SS L-Grade

Min Design Temperature

-425 °F

Y Coefficient

Ref 4 — Austenitic 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 °F1150 °F1200 °F1250 °F1300 °F1350 °F1400 °F1450 °F1500 °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	5,560	5,560	5,560	5,261	4,895	4,661	4,495	4,328
1/4	0.54	5,376	5,376	5,376	5,086	4,732	4,507	4,346	4,185
3/8	0.675	4,351	4,351	4,351	4,116	3,830	3,647	3,517	3,387
1/2	0.84	4,171	4,171	4,171	3,946	3,672	3,497	3,372	3,247
3/4	1.05	3,401	3,401	3,401	3,218	2,994	2,851	2,750	2,648
1	1.315	3,181	3,181	3,181	3,010	2,800	2,667	2,572	2,476
1 1/4	1.66	2,619	2,619	2,619	2,478	2,306	2,196	2,117	2,039
1 1/2	1.9	2,356	2,356	2,356	2,229	2,074	1,975	1,905	1,834
2	2.375	1,985	1,985	1,985	1,878	1,747	1,664	1,605	1,545
2 1/2	2.875	2,171	2,171	2,171	2,054	1,911	1,820	1,755	1,690
3	3.5	1,885	1,885	1,885	1,783	1,659	1,580	1,524	1,467
3.5	4	1,719	1,719	1,719	1,627	1,513	1,441	1,390	1,338
4	4.5	1,598	1,598	1,598	1,512	1,407	1,340	1,292	1,244
5	5.563	1,401	1,401	1,401	1,325	1,233	1,174	1,132	1,090
6	6.625	1,273	1,273	1,273	1,204	1,120	1,067	1,029	991
7	7.625	1,186	1,186	1,186	1,123	1,044	995	959	924
8	8.625	1,120	1,120	1,120	1,060	986	939	906	872
9	9.625	1,065	1,065	1,065	1,008	937	893	861	829
10	10.75	1,016	1,016	1,016	962	895	852	822	791
12	12.75	878	878	878	830	773	736	709	683
14	14	798	798	798	755	702	669	645	621
16	16	696	696	696	659	613	584	563	542
18	18	618	618	618	585	544	518	499	481
20	20	555	555	555	525	489	465	449	432
22	22	504	504	504	477	444	423	408	392
24	24	462	462	462	437	406	387	373	359
26	26	426	426	426	403	375	357	344	331
28	28	395	395	395	374	348	331	319	308
30	30	369	369	369	349	324	309	298	287
36	36	307	307	307	290	270	257	248	239
42	42	263	263	263	248	231	220	212	204
44	44	251	251	251	237	221	210	203	195
46	46	240	240	240	227	211	201	194	187
48	48	230	230	230	217	202	192	186	179

Custom Wall Thickness

NPS

Wall Thickness (in)

Allowable Stress vs Temperature

Matching Flange Group

Group 2.3 — Austenitic SS L-Grade(A182 F304L/F316L/F317L, A240-304L/316L)

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.