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ASTM A106 A53 API5L Steel Pipe Pressure and Temperature
Maximum allowable pressure and temperature ratings for petroleum refinery piping and chemical plant piping systems grade B with plane ends to ANSI/ASME B31.3 Process Piping
| Maximum Allowable Pressure (Kpa) |
Nominal Size
(mm) |
Schedule no. |
Wall Thickness
(mm) |
Temperature (oC) |
| -29 - 38 |
205 |
260 |
350 |
370 |
400 |
4301) |
450 |
| Maximum Allowable Stress (kPa) |
| 137800 |
137800 |
130221 |
117130 |
115752 |
89570 |
74412 |
59943 |
| 15 |
STD |
40 |
2.77 |
34416 |
34416 |
32528 |
29255 |
28910 |
22372 |
18589 |
14972 |
| XS |
80 |
3.73 |
48092 |
48092 |
45466 |
40878 |
40396 |
31260 |
25969 |
20918 |
|
160 |
4.78 |
62830 |
62830 |
59378 |
53404 |
52777 |
40837 |
33929 |
27333 |
| XXS |
|
7.47 |
98245 |
98245 |
92836 |
83507 |
82522 |
63857 |
53053 |
42739 |
| 20 |
STD |
40 |
2.87 |
28070 |
28070 |
26526 |
23860 |
23578 |
18245 |
15158 |
12209 |
| XS |
80 |
3.91 |
39418 |
39418 |
37247 |
33506 |
33106 |
25617 |
21283 |
17142 |
|
160 |
5.56 |
58152 |
58152 |
54955 |
49429 |
48843 |
37799 |
31398 |
25293 |
| XXS |
|
7.82 |
83107 |
83107 |
78539 |
70643 |
69809 |
54024 |
44881 |
36152 |
| 25 |
STD |
40 |
3.38 |
26251 |
26251 |
24804 |
22310 |
22048 |
17060 |
14173 |
11417 |
| XS |
80 |
4.55 |
36283 |
36283 |
34285 |
30862 |
30474 |
23584 |
19595 |
15785 |
|
160 |
6.35 |
52481 |
52481 |
49594 |
44606 |
44082 |
34112 |
28339 |
22827 |
| XXS |
|
9.09 |
77030 |
77030 |
72793 |
65476 |
64704 |
50070 |
41595 |
33506 |
| 32 |
STD |
40 |
3.56 |
21614 |
21614 |
20421 |
18369 |
18155 |
14049 |
11672 |
9404 |
| XS |
80 |
4.85 |
30178 |
30178 |
28518 |
25651 |
25348 |
19616 |
16295 |
13125 |
|
160 |
6.35 |
40596 |
40596 |
38364 |
34505 |
34099 |
26389 |
21924 |
17659 |
| XXS |
|
9.70 |
64601 |
64601 |
61045 |
54906 |
54266 |
41988 |
34884 |
28097 |
| 40 |
STD |
40 |
3.68 |
19444 |
19444 |
18375 |
16529 |
16329 |
12636 |
10550 |
8454 |
| XS |
80 |
5.08 |
27402 |
27402 |
25900 |
23295 |
23019 |
17811 |
14800 |
11919 |
|
160 |
7.14 |
39738 |
39738 |
37599 |
33816 |
33416 |
25858 |
21483 |
17308 |
| XXS |
|
10.16 |
58779 |
58799 |
55547 |
49966 |
49374 |
38205 |
31742 |
25569 |
| 50 |
STD |
40 |
3.91 |
16378 |
16378 |
15468 |
13925 |
13759 |
10645 |
8847 |
7124 |
| XS |
80 |
5.54 |
23653 |
23653 |
22351 |
20105 |
19871 |
15378 |
12774 |
10287 |
|
160 |
8.74 |
38866 |
38866 |
36731 |
33037 |
32652 |
25266 |
20987 |
16908 |
| XXS |
|
11.07 |
50793 |
50793 |
48003 |
43173 |
42670 |
33017 |
27429 |
22096 |
| 65 |
STD |
40 |
5.16 |
17914 |
17914 |
16929 |
15227 |
15048 |
11644 |
9674 |
7793 |
| XS |
80 |
7.01 |
24818 |
24818 |
23447 |
21097 |
20849 |
16129 |
13401 |
10797 |
|
160 |
9.53 |
34615 |
34615 |
32714 |
29420 |
29076 |
22503 |
18693 |
15055 |
| XXS |
|
14.02 |
53081 |
53081 |
50159 |
45116 |
44585 |
34498 |
28662 |
23088 |
| 80 |
STD |
40 |
5.49 |
15558 |
15558 |
14969 |
13222 |
13063 |
10108 |
8399 |
6766 |
| XS |
80 |
7.62 |
21986 |
21968 |
20780 |
18693 |
18472 |
14290 |
11871 |
9563 |
|
160 |
11.13 |
33079 |
33079 |
31253 |
28111 |
27780 |
21497 |
17859 |
14386 |
| XXS |
|
15.24 |
46976 |
46976 |
44392 |
39928 |
39459 |
30536 |
25369 |
20436 |
| 100 |
STD |
40 |
6.02 |
13187 |
13187 |
12464 |
11210 |
11079 |
8571 |
7124 |
5739 |
| XS |
80 |
8.56 |
19058 |
19058 |
18010 |
16198 |
16012 |
12388 |
12094 |
8289 |
|
120 |
11.13 |
25190 |
25190 |
23805 |
21407 |
21159 |
16371 |
13601 |
10995 |
|
160 |
13.49 |
31019 |
31019 |
29310 |
26368 |
26058 |
20160 |
16750 |
13208 |
| XXS |
|
17.12 |
40348 |
40348 |
38129 |
34298 |
33892 |
26230 |
21786 |
17549 |
| 125 |
STD |
40 |
6.55 |
11561 |
11561 |
10921 |
9825 |
9708 |
7510 |
6243 |
5038 |
| XS |
80 |
9.53 |
17060 |
17060 |
16122 |
14503 |
14331 |
11093 |
9212 |
7421 |
|
120 |
12.70 |
23130 |
23130 |
21855 |
19657 |
19430 |
15034 |
12492 |
10059 |
|
160 |
15.88 |
29407 |
29407 |
27787 |
24997 |
24701 |
19113 |
15881 |
12795 |
| XXS |
|
19.05 |
35897 |
35897 |
33926 |
30516 |
30158 |
23337 |
19388 |
15620 |
| 150 |
STD |
40 |
7.11 |
10550 |
10550 |
9928 |
8924 |
8819 |
6828 |
5370 |
4568 |
| XS |
80 |
10.97 |
16474 |
16474 |
15571 |
14007 |
13842 |
10707 |
8895 |
7165 |
|
120 |
14.27 |
21745 |
21745 |
20553 |
18448 |
18265 |
14138 |
11747 |
9460 |
| XXS |
160 |
18.26 |
28325 |
28325 |
26768 |
24074 |
23784 |
18410 |
15296 |
12319 |
| 200 |
|
20 |
6.35 |
7138 |
7138 |
6745 |
6063 |
5994 |
4637 |
3852 |
3100 |
|
30 |
7.04 |
7924 |
7924 |
7489 |
6732 |
6656 |
5147 |
4279 |
3445 |
| STD |
40 |
8.18 |
9246 |
9246 |
8737 |
7855 |
7765 |
6008 |
4995 |
4024 |
|
60 |
10.31 |
11741 |
11741 |
11093 |
9977 |
9860 |
7627 |
6339 |
5105 |
| XS |
80 |
12.70 |
14572 |
14572 |
13766 |
12388 |
12237 |
9474 |
7868 |
6338 |
|
100 |
15.09 |
17452 |
17452 |
16488 |
14834 |
14655 |
11341 |
9426 |
7593 |
|
120 |
18.26 |
21345 |
21345 |
20174 |
18148 |
17935 |
13876 |
11527 |
9288 |
|
140 |
20.62 |
24308 |
24308 |
22971 |
20656 |
20415 |
15799 |
13125 |
10569 |
| XXS |
|
22.23 |
26334 |
26334 |
24877 |
22386 |
22124 |
17115 |
14221 |
11458 |
|
160 |
23.01 |
27340 |
27340 |
25838 |
23240 |
22964 |
17769 |
14765 |
11892 |
| 250 |
|
20 |
6.35 |
5698 |
5698 |
5388 |
4844 |
4789 |
3707 |
3080 |
2480 |
|
30 |
7.8 |
7028 |
7028 |
6642 |
5974 |
5905 |
4568 |
3796 |
3059 |
| STD |
40 |
9.27 |
8385 |
8385 |
7923 |
7131 |
7048 |
5450 |
4527 |
3652 |
| XS |
60 |
12.7 |
11596 |
11596 |
10955 |
9853 |
9736 |
7538 |
6263 |
5043 |
|
80 |
15.09 |
13863 |
13863 |
13098 |
11781 |
11644 |
9012 |
7483 |
6028 |
|
100 |
18.26 |
16922 |
16922 |
15992 |
14386 |
14214 |
10996 |
9136 |
7359 |
|
120 |
21.44 |
20036 |
20036 |
18934 |
17032 |
16825 |
13022 |
10817 |
8716 |
| XXS |
140 |
25.4 |
23998 |
23998 |
16474 |
20394 |
20153 |
15599 |
12960 |
10438 |
|
160 |
28.58 |
27229 |
27229 |
25734 |
23143 |
22875 |
17700 |
14703 |
11844 |
| 300 |
|
20 |
6.35 |
4795 |
4795 |
4534 |
4072 |
4024 |
3114 |
2591 |
2088 |
|
30 |
8.38 |
6359 |
6359 |
6008 |
5402 |
5540 |
4134 |
3431 |
2763 |
| STD |
|
9.53 |
7241 |
7241 |
6842 |
6153 |
6084 |
4706 |
3914 |
3149 |
|
40 |
10.31 |
7854 |
7854 |
7421 |
6676 |
6601 |
5015 |
4244 |
3417 |
| XS |
|
12.70 |
9722 |
9722 |
9191 |
8268 |
8165 |
6318 |
5250 |
4230 |
|
60 |
14.27 |
10969 |
10969 |
10363 |
9322 |
9212 |
7131 |
5925 |
4768 |
|
80 |
17.48 |
13525 |
13525 |
12850 |
11492 |
11362 |
8792 |
7303 |
5884 |
|
100 |
21.44 |
16736 |
16736 |
15819 |
14227 |
14062 |
10879 |
9040 |
7283 |
| XXS |
120 |
25.4 |
20015 |
20015 |
18913 |
17011 |
16811 |
13008 |
10804 |
8702 |
|
140 |
28.58 |
22682 |
22682 |
21435 |
19278 |
19051 |
14744 |
12244 |
9866 |
|
160 |
33.32 |
26740 |
26740 |
25273 |
22730 |
22461 |
17383 |
14441 |
11630 |
| 350 |
|
10 |
6.35 |
4361 |
4361 |
4120 |
3707 |
3665 |
2831 |
2356 |
1895 |
|
20 |
7.92 |
5457 |
5457 |
5161 |
4644 |
4589 |
3548 |
2949 |
2377 |
| STD |
30 |
9.53 |
6580 |
6580 |
6222 |
5595 |
5533 |
4279 |
3555 |
2866 |
|
40 |
11.13 |
7717 |
7717 |
7310 |
6559 |
6477 |
5016 |
4168 |
3355 |
| XS |
|
12.70 |
8833 |
8833 |
8351 |
7510 |
7421 |
5739 |
4768 |
3845 |
|
60 |
15.09 |
10541 |
10541 |
9963 |
8964 |
8861 |
6855 |
5691 |
4589 |
|
80 |
19.05 |
13421 |
13421 |
12684 |
11410 |
11272 |
9723 |
7248 |
5836 |
|
100 |
23.83 |
16949 |
16949 |
16019 |
14407 |
14242 |
11017 |
9157 |
7372 |
|
120 |
27.79 |
19933 |
19933 |
18837 |
16943 |
16743 |
12960 |
10762 |
8675 |
|
140 |
31.75 |
22964 |
22964 |
21703 |
19519 |
19292 |
14931 |
12402 |
9990 |
|
160 |
35.71 |
26051 |
26051 |
24618 |
22144 |
21883 |
16936 |
14069 |
11334 |
| 400 |
|
10 |
6.35 |
3810 |
3810 |
3603 |
3238 |
3197 |
2474 |
2060 |
1660 |
|
20 |
7.92 |
4768 |
4768 |
4507 |
4051 |
4004 |
3100 |
2577 |
2074 |
| STD |
30 |
9.53 |
5746 |
5746 |
5429 |
4885 |
4830 |
3734 |
3100 |
2501 |
| XS |
40 |
12.70 |
7703 |
7703 |
7283 |
6545 |
6470 |
5009 |
4126 |
3349 |
|
60 |
16.66 |
10176 |
10176 |
9618 |
8654 |
8550 |
6614 |
5498 |
4430 |
|
80 |
21.44 |
13208 |
13208 |
12478 |
11224 |
11093 |
8585 |
7131 |
5746 |
|
100 |
26.19 |
16274 |
16274 |
15378 |
13835 |
13670 |
10576 |
8785 |
7076 |
|
120 |
30.96 |
19409 |
19409 |
18341 |
16481 |
16302 |
12616 |
10480 |
8440 |
|
140 |
36.53 |
23130 |
23130 |
21855 |
19657 |
19430 |
15034 |
12492 |
10059 |
|
160 |
40.49 |
25824 |
25824 |
24404 |
21952 |
21697 |
16784 |
13945 |
11238 |
| 450 |
|
10 |
6.35 |
3383 |
3383 |
3197 |
2873 |
2839 |
2198 |
1826 |
1474 |
|
20 |
7.92 |
4230 |
4230 |
3996 |
3597 |
3555 |
2749 |
2287 |
1839 |
| STD |
|
9.53 |
5099 |
5099 |
4816 |
4334 |
4286 |
3314 |
2756 |
2219 |
| XS |
30 |
11.13 |
5967 |
5967 |
5643 |
5071 |
5016 |
3879 |
3225 |
2598 |
|
|
12.70 |
6835 |
6835 |
6456 |
5808 |
5739 |
4437 |
3686 |
2969 |
|
40 |
14.27 |
7696 |
7696 |
7276 |
6545 |
6463 |
5002 |
4155 |
3349 |
|
60 |
19.05 |
10349 |
10349 |
9784 |
8799 |
8695 |
6725 |
5588 |
4499 |
|
80 |
23.83 |
13043 |
13043 |
12326 |
11086 |
10955 |
8475 |
7042 |
5670 |
|
100 |
29.36 |
16219 |
16219 |
15323 |
13787 |
13622 |
10542 |
8757 |
7055 |
|
120 |
34.93 |
19464 |
19464 |
18389 |
16543 |
16350 |
12650 |
10507 |
8468 |
|
140 |
39.67 |
22282 |
22282 |
21056 |
18941 |
18713 |
11483 |
12030 |
9694 |
|
160 |
45.24 |
25638 |
25638 |
24225 |
21793 |
21531 |
16660 |
13842 |
11155 |
| 500 |
|
10 |
6.35 |
3038 |
3038 |
2873 |
2574 |
2556 |
1977 |
1640 |
1323 |
| STD |
20 |
9.53 |
4582 |
4582 |
4327 |
3893 |
3852 |
2976 |
2474 |
1991 |
| XS |
30 |
12.70 |
6139 |
6139 |
5801 |
5216 |
5154 |
3989 |
3314 |
2666 |
|
40 |
15.09 |
7317 |
7317 |
6911 |
6215 |
6146 |
4754 |
3948 |
3183 |
|
60 |
20.62 |
10080 |
10080 |
9522 |
8564 |
8468 |
6552 |
5443 |
4382 |
|
80 |
26.19 |
12898 |
12898 |
12188 |
10962 |
10831 |
8385 |
6966 |
5608 |
|
100 |
32.54 |
16171 |
16171 |
15287 |
13746 |
13580 |
10514 |
8730 |
7035 |
|
120 |
38.10 |
19085 |
19085 |
18037 |
16226 |
16033 |
12409 |
10307 |
8302 |
|
140 |
44.45 |
22475 |
22475 |
21242 |
19106 |
18879 |
14614 |
12140 |
9777 |
|
160 |
50.01 |
25450 |
25450 |
24094 |
21675 |
21421 |
16577 |
13766 |
11093 |
| 600 |
|
10 |
6.35 |
2529 |
2529 |
2391 |
2150 |
2129 |
1647 |
1364 |
1102 |
| STD |
20 |
9.53 |
3810 |
3810 |
3603 |
3238 |
3197 |
2474 |
2060 |
1660 |
| XS |
|
12.70 |
5097 |
5097 |
4816 |
4334 |
4286 |
3314 |
2756 |
2219 |
|
30 |
14.27 |
5739 |
5739 |
5423 |
4878 |
4823 |
3734 |
3100 |
2494 |
|
40 |
17.48 |
7055 |
7055 |
6670 |
5994 |
5925 |
4589 |
3810 |
3066 |
|
60 |
24.61 |
10018 |
10018 |
9467 |
8516 |
8420 |
6511 |
5409 |
4361 |
|
80 |
30.96 |
12691 |
12691 |
12002 |
10783 |
10659 |
8254 |
6856 |
5519 |
|
100 |
38.89 |
16102 |
16102 |
15220 |
13690 |
10528 |
10466 |
8695 |
7007 |
|
120 |
46.02 |
19223 |
19223 |
18168 |
16336 |
16150 |
12491 |
10383 |
8364 |
|
140 |
52.37 |
22048 |
22048 |
20835 |
18741 |
18520 |
14331 |
11906 |
9591 |
|
160 |
59.54 |
25279 |
25279 |
23888 |
21489 |
21235 |
16433 |
13649 |
10996 |
1) Due to possible conversion of carbon to graphite (graphitization) - carbon steel pipes should be avoided for temperatures above 425oC. Instead Alloy steel should be used.
- 1 Pa = 10-6 N/mm2 = 10-5 bar = 0.1020 kp/m2 = 1.02x10-4 m H2O = 9.869x10-6 atm = 1.45x10-4 psi (lbf/in2)
- T(oF) = [T(oC)](9/5) + 32
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