ASTM B88 seamless copper water tubes - working pressures.
Working pressure of copper tubes type K, L and M are indicated in the table below.
- ASTM B88 - Seamless Copper Water Tubes - Dimensions
Ratings based on service temperature max. 150oF (66oC).
- yield strength S = 5100 psi (35 GPa) for annealed
- yield strength S = 10000 psi (69GPa) for drawn tube
Copper tube - Type K
Nominal Size (in) | Working Pressure (psi) | Actual Burst Pressure (psi) | ||
---|---|---|---|---|
Annealed | Drawn | Annealed | Drawn | |
1/4 | 913 | 1796 | ||
3/8 | 960 | 1889 | ||
1/2 | 758 | 1490 | 4535 | 9840 |
5/8 | 626 | 1229 | ||
3/4 | 724 | 1424 | 4200 | 9300 |
1 | 557 | 1093 | 3415 | 7200 |
1 1/4 | 452 | 888 | 2800 | 5525 |
1 1/2 | 420 | 825 | 2600 | 5000 |
2 | 370 | 726 | 2235 | 3915 |
2 1/2 | 338 | 664 | 3575 | |
3 | 328 | 643 | 3450 | |
3 1/2 | 311 | 610 | ||
4 | 306 | 600 | 3415 | |
5 | 293 | 575 | 3585 | |
6 | 295 | 578 | 3425 | |
8 | 314 | 615 | 3635 | |
10 | 314 | 615 | ||
12 | 314 | 615 |
- BS 2871 - Copper Tubes - Dimensions and Working Pressures Table X, Y and Z
Copper tube - Type L
Nominal Size (in) | Working Pressure (psi) | Actual Burst Pressure (psi) | ||
---|---|---|---|---|
Annealed | Drawn | Annealed | Drawn | |
1/4 | 775 | 1524 | ||
3/8 | 662 | 1302 | ||
1/2 | 613 | 1206 | 3885 | 7765 |
5/8 | 537 | 1055 | ||
3/4 | 495 | 972 | 2935 | 5900 |
1 | 420 | 825 | 2650 | 5115 |
1 1/4 | 373 | 733 | 2400 | 4550 |
1 1/2 | 347 | 682 | 2200 | 4100 |
2 | 309 | 607 | 1910 | 3365 |
2 1/2 | 285 | 560 | 3215 | |
3 | 270 | 529 | 2865 | |
3 1/2 | 258 | 506 | ||
4 | 249 | 489 | 2865 | |
5 | 229 | 449 | 2985 | |
6 | 213 | 418 | 2690 | |
8 | 230 | 451 | 2650 | |
10 | 231 | 452 | ||
12 | 215 | 423 |
Copper tube - Type M
Nominal Size (in) | Working Pressure (psi) | Actual BurstPressure (psi) | ||
---|---|---|---|---|
Annealed | Drawn | Annealed | Drawn | |
3/8 | 485 | 953 | ||
1/2 | 420 | 825 | 6135 | |
3/4 | 346 | 680 | 4715 | |
1 | 286 | 563 | 3865 | |
1 1/4 | 287 | 565 | 3875 | |
1 1/2 | 282 | 553 | 3550 | |
2 | 254 | 499 | 2935 | |
2 1/2 | 233 | 457 | 2800 | |
3 | 215 | 423 | 2665 | |
3 1/2 | 214 | 421 | ||
4 | 213 | 419 | 2215 | |
5 | 198 | 388 | 2490 | |
6 | 186 | 364 | 2000 | |
8 | 195 | 382 | 2285 | |
10 | 195 | 383 | ||
12 | 195 | 383 |
- 1 N/mm2 = 106 Pa (N/m2) = 1 MPa = 10 bar = 1.020x105 kp/m2 = 102.0 m H2O = 9.869 atm = 145.0 psi (lbf/in2)
- 1 in = 25.4 mm
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