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Alloy C276 Welded Pipe Tube Maximum Working Pressure Table
Nickel, Molybdenum, Chromium / ASTM B626 or Equivalent, Maxium Allowable Working Pressure (PSI) For Fractional Sizes
| Tubes OD (Inches) |
Wall Thickness (Inches) |
| .010 |
.012 |
.016 |
.020 |
.028 |
.035 |
.049 |
.065 |
.083 |
.095 |
.109 |
.120 |
| 1/16 |
7,780 |
9,535 |
13,044 |
16,334 |
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| 1/8 |
|
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|
7,780 |
11,297 |
14,322 |
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|
| 3/16 |
|
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|
4,943 |
7,191 |
9,243 |
13,332 |
|
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|
| 1/4 |
|
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|
5,215 |
6,684 |
9,756 |
13,260 |
|
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|
| 3/8 |
|
|
|
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4,276 |
6,186 |
8,516 |
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| 1/2 |
|
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3,143 |
4,509 |
6,152 |
8,115 |
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| 5/8 |
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2,486 |
3,546 |
4,810 |
6,300 |
7,337 |
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| 3/4 |
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2,056 |
2,923 |
3,947 |
5,147 |
5,976 |
6,974 |
7,780 |
| 7/8 |
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|
1,751 |
2,486 |
3,349 |
4,352 |
5,041 |
5,866 |
6,531 |
| 1 |
|
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|
1,526 |
2,162 |
2,906 |
3,769 |
4,358 |
5,062 |
5,628 |
Factor of Safety = 4, considering tensile strength to be 100,000 PSI at room temperature,
and a weld joing efficiency factor of approximately 0.85
Maxium Allowable Working Pressure (Bar) For Metric Sizes
| Tubes OD (Inches) |
Wall Thickness (Inches) |
| 0.5 |
0.6 |
0.7 |
0.8 |
1.0 |
1.2 |
1.5 |
1.6 |
1.8 |
2.0 |
2.2 |
2.5 |
3.0 |
| 3 |
562 |
688 |
814 |
939 |
1169 |
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| 4 |
406 |
498 |
595 |
688 |
877 |
1058 |
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| 6 |
|
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376 |
435 |
562 |
688 |
877 |
939 |
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| 8 |
|
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275 |
318 |
406 |
498 |
641 |
688 |
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| 10 |
|
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|
250 |
318 |
388 |
498 |
536 |
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| 12 |
|
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|
206 |
261 |
318 |
406 |
436 |
498 |
562 |
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| 14 |
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221 |
269 |
343 |
368 |
419 |
472 |
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| 16 |
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192 |
233 |
296 |
318 |
361 |
406 |
452 |
522 |
641 |
| 18 |
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|
170 |
206 |
261 |
280 |
318 |
357 |
396 |
457 |
562 |
| 22 |
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138 |
167 |
211 |
226 |
256 |
287 |
318 |
365 |
447 |
| 25 |
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121 |
146 |
184 |
197 |
223 |
250 |
277 |
318 |
388 |
Information for reference purposes only.
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