Air Products Fast Facts:Charts and Tables: Pressure Rating Tables

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Charts & Tables: Pressure Rating Tables*

Stainless Steel, Red Brass

Carbon Steel (-20°F to +400°F) and
Stainless Steel Pipe (-325°F to +300°F)

Seamless, not corroded ASTM A106, A312-TP 304 or TP316
Weight or Sch.	Nom. Size	OD (in)	Nom. Wall (in)	Min. Wall (in)	Plain Ends Max. psi	Thd’d Ends Max. psi
5S	1/2	.84	.065	.0568	2863.4
10S	1/2	.84	.083	.0726	3715.3
40S	1/2	.84	.109	.0953	4995.4**	1889.3
80S	1/2	.84	.147	.1286	6980	3652.5

5S	3/4	1.05	.065	.0568	2264.8
10S	3/4	1.05	.083	.0726	2928.7
40S	3/4	1.05	.113	.0988	4073.5**	1642
80S	3/4	1.05	.154	.1347	5720.6	3142.2

5S	1	1.315	.065	.0568	1792
10S	1	1.315	.109	.0953	3079.8**
40S	1	1.315	.133	.1163	3796.4**	1453.5
80S	1	1.315	.179	.1566	5266	2796.3

5S	1.5	1.9	.065	.0568	1226.7
10S	1.5	1.9	.109	.0953	2091.9**
40S	1.5	1.9	.145	.1268	2821.8	1236.3
80S	1.5	1.9	.2	.175	3977.2	2322.7

5S	2	2.375	.065	.0568	976.6
10S	2	2.375	.109	.0953	1659.6**
40S	2	2.375	.154	.1347	2377.3	592.1
80S	2	2.375	.218	.1907	3433.2	1576.6

Stainless Steel Tubing (-325°F to +300°F)

Seamless, not corroded ASTM A269-TP 304 or TP316
OD	Nom. Wall	Min. Wall	Max psi
1/4"	.049"	.0465"	7688.8
3/8"	.049"	.0465"	4875.9

Red Brass Pipe (-325°F to +300°F)

Seamless, not corroded ASTM B43 Annealed
Weight or Sch.	Nom. Size	OD (in)	Nom. Wall (in)	Min. Wall (in)	Plain Ends Max. psi	Thd’d Ends Max. psi
Std.	1/2	.84	.107	.101	2128.5	871.7
XH	1/2	.84	.149	.141	3102.3	1735.9

Std.	3/4	1.05	.114	.108	1793.2	806.2
XH	3/4	1.05	.157	.148	2541.8	1487.4

Std.	1	1.315	.126	.119	1560.9	620.1
XH	1	1.315	.182	.172	2337.3	1329.1

Copper Tube

Soft Copper Tube (�325°F to +100°F)

Seamless, not corroded ASTM B68, C12200
OD (inches)	Nom. Wall	Min. Wall	Max psi
.125	.020	.0170	1831.2
.125	.025	.0220	2458.1
.125	.028	.0250	2857.1
.125	.030	.0270	3133.4
.125	.032	.0290	3418.4
.25	.03	.0275	1447.3
.25	.032	.0295	1563.6
.25	.035	.0320	1711.2
.25	.049	.0460	2589.1
.25	.065	.0615	3675.2
.375	.032	.0295	1007.4
.375	.035	.0320	1099
.375	.042	.0390	1361.2
.375	.049	.0460	1632.1
.375	.065	.0615	2265.1

Hard Copper Tube (�325°F to +100°F)

Seamless, not corroded ASTM B75, C12200
Type	OD (in)	Nom. Size	Nom. Wall	Min. Wall	Max. psi
--	.25	1/8	.065	.0615	3675.3
--	.375	1/4	.065	.0615	2265.1
--	.625	1/2	.065	.0615	1281.7
Seamless, not corroded ASTM B88, C12200
K	.875	3/4	.065	.059	855.2
L	.875	3/4	.045	.0410	584.1
M	.875	3/4	.032	.0290	408.5
K	1.125	1	.065	.059	656.8
L	1.125	1	.050	.045	495.8
M	1.125	1	.035	.0310	358.1
K	1.625	1.5	.072	.065	495.8
L	1.625	1.5	.060	.054	409.6
M	1.625	1.5	.049	.044	332.1
K	2.125	2	.083	.075	435.8
L	2.125	2	.070	.063	364.4
M	2.125	2	.058	.0520	299.5

* ANSI B31.3 - 1987
** Exceeds APCI Standard