A312 TP310S Pipe MAWP Calculator

ASTM A312 TP310S SS Pipe Smls 25Cr-20Ni

Pressure Ratings > Pipe MAWP > A312 TP310S

Material Properties

Specification

A312 TP310S

Description

ASTM A312 TP310S SS Pipe Smls 25Cr-20Ni

Tensile Strength

75 ksi

Yield Strength

30 ksi

B16.5 Flange Group

Group 2.7 — Austenitic SS 25Cr-20Ni

Min Design Temperature

-325 °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	6,659	6,659	6,659	6,659	6,426	6,160	5,960	5,794
1/4	0.54	6,438	6,438	6,438	6,438	6,213	5,955	5,762	5,601
3/8	0.675	5,210	5,210	5,210	5,210	5,028	4,819	4,663	4,533
1/2	0.84	4,995	4,995	4,995	4,995	4,821	4,621	4,471	4,346
3/4	1.05	4,074	4,074	4,074	4,074	3,931	3,768	3,646	3,544
1	1.315	3,810	3,810	3,810	3,810	3,676	3,524	3,410	3,314
1 1/4	1.66	3,137	3,137	3,137	3,137	3,027	2,902	2,808	2,729
1 1/2	1.9	2,822	2,822	2,822	2,822	2,723	2,610	2,526	2,455
2	2.375	2,377	2,377	2,377	2,377	2,294	2,199	2,128	2,068
2 1/2	2.875	2,600	2,600	2,600	2,600	2,509	2,405	2,327	2,262
3	3.5	2,258	2,258	2,258	2,258	2,179	2,088	2,020	1,964
3.5	4	2,059	2,059	2,059	2,059	1,987	1,905	1,843	1,791
4	4.5	1,914	1,914	1,914	1,914	1,847	1,770	1,713	1,665
5	5.563	1,678	1,678	1,678	1,678	1,619	1,552	1,502	1,460
6	6.625	1,524	1,524	1,524	1,524	1,471	1,410	1,364	1,326
7	7.625	1,421	1,421	1,421	1,421	1,371	1,314	1,272	1,236
8	8.625	1,342	1,342	1,342	1,342	1,295	1,241	1,201	1,167
9	9.625	1,275	1,275	1,275	1,275	1,231	1,180	1,141	1,110
10	10.75	1,217	1,217	1,217	1,217	1,175	1,126	1,089	1,059
12	12.75	1,051	1,051	1,051	1,051	1,014	972	941	914
14	14	955	955	955	955	922	884	855	831
16	16	834	834	834	834	805	771	746	726
18	18	740	740	740	740	714	684	662	644
20	20	665	665	665	665	642	615	595	579
22	22	604	604	604	604	583	559	540	525
24	24	553	553	553	553	534	511	495	481
26	26	510	510	510	510	492	472	456	444
28	28	473	473	473	473	457	438	424	412
30	30	441	441	441	441	426	408	395	384
36	36	367	367	367	367	354	340	329	320
42	42	314	314	314	314	303	291	281	274
44	44	300	300	300	300	290	278	269	261
46	46	287	287	287	287	277	265	257	250
48	48	275	275	275	275	265	254	246	239

Custom Wall Thickness

NPS

Wall Thickness (in)

Allowable Stress vs Temperature

Matching Flange Group

Group 2.7 — Austenitic SS 25Cr-20Ni(A182 F310, A240-310H)

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.