United Kingdom · B.S.
625
BS 3606:1992 — Specification for steel tubes for heat exchangers
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al met | 0.02 | |||
| C | 0.15 | |||
| Cr | 4 | 6 | ||
| Mn | 0.3 | 0.6 | ||
| Mo | 0.45 | 0.65 | ||
| Ni | 0.3 | |||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.5 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| seamless or welded steel tube, annealed | ≥170 | 450–600 | ≥20 |
Creep
| Temperature ℃ | Time h | CRS |
|---|---|---|
| 450 | 10000.0h | 196.0 |
| 450 | 30000.0h | 172.0 |
| 450 | 50000.0h | 162.0 |
| 450 | 100000.0h | 146.0 |
| 450 | 150000.0h | 136.0 |
| 450 | 200000.0h | 130.0 |
| 450 | 250000.0h | 126.0 |
| 460 | 10000.0h | 179.0 |
| 460 | 30000.0h | 158.0 |
| 460 | 50000.0h | 146.0 |
| 460 | 100000.0h | 131.0 |
| 460 | 150000.0h | 123.0 |
| 460 | 200000.0h | 118.0 |
| 460 | 250000.0h | 114.0 |
| 470 | 10000.0h | 166.0 |
| 470 | 30000.0h | 142.0 |
| 470 | 50000.0h | 131.0 |
| 470 | 100000.0h | 119.0 |
| 470 | 150000.0h | 112.0 |
| 470 | 200000.0h | 107.0 |
| 470 | 250000.0h | 103.0 |
| 480 | 10000.0h | 151.0 |
| 480 | 30000.0h | 129.0 |
| 480 | 50000.0h | 120.0 |
| 480 | 100000.0h | 109.0 |
| 480 | 150000.0h | 101.0 |
| 480 | 200000.0h | 95.0 |
| 480 | 250000.0h | 91.0 |
| 490 | 10000.0h | 137.0 |
| 490 | 30000.0h | 117.0 |
| 490 | 50000.0h | 110.0 |
| 490 | 100000.0h | 97.0 |
| 490 | 150000.0h | 89.0 |
| 490 | 200000.0h | 84.0 |
| 490 | 250000.0h | 81.0 |
| 500 | 10000.0h | 125.0 |
| 500 | 30000.0h | 108.0 |
| 500 | 50000.0h | 99.0 |
| 500 | 100000.0h | 86.0 |
| 500 | 150000.0h | 79.0 |
| 500 | 200000.0h | 75.0 |
| 500 | 250000.0h | 72.0 |
| 510 | 10000.0h | 115.0 |
| 510 | 30000.0h | 97.0 |
| 510 | 50000.0h | 88.0 |
| 510 | 100000.0h | 77.0 |
| 510 | 150000.0h | 71.0 |
| 510 | 200000.0h | 67.0 |
| 510 | 250000.0h | 63.0 |
| 520 | 10000.0h | 105.0 |
| 520 | 30000.0h | 86.0 |
| 520 | 50000.0h | 79.0 |
| 520 | 100000.0h | 68.0 |
| 520 | 150000.0h | 63.0 |
| 520 | 200000.0h | 59.0 |
| 520 | 250000.0h | 56.0 |
| 530 | 10000.0h | 95.0 |
| 530 | 30000.0h | 78.0 |
| 530 | 50000.0h | 70.0 |
| 530 | 100000.0h | 61.0 |
| 530 | 150000.0h | 56.0 |
| 530 | 200000.0h | 52.0 |
| 530 | 250000.0h | 49.0 |
| 540 | 10000.0h | 85.0 |
| 540 | 30000.0h | 70.0 |
| 540 | 50000.0h | 63.0 |
| 540 | 100000.0h | 54.0 |
| 540 | 150000.0h | 49.0 |
| 540 | 200000.0h | 46.0 |
| 540 | 250000.0h | 43.0 |
| 550 | 10000.0h | 77.0 |
| 550 | 30000.0h | 62.0 |
| 550 | 50000.0h | 56.0 |
| 550 | 100000.0h | 48.0 |
| 550 | 150000.0h | 43.0 |
| 550 | 200000.0h | 40.0 |
| 550 | 250000.0h | 38.0 |
| 560 | 10000.0h | 69.0 |
| 560 | 30000.0h | 56.0 |
| 560 | 50000.0h | 50.0 |
| 560 | 100000.0h | 42.0 |
| 560 | 150000.0h | 38.0 |
| 560 | 200000.0h | 35.0 |
| 560 | 250000.0h | 33.0 |
| 570 | 10000.0h | 62.0 |
| 570 | 30000.0h | 50.0 |
| 570 | 50000.0h | 44.0 |
| 570 | 100000.0h | 37.0 |
| 570 | 150000.0h | 34.0 |
| 570 | 200000.0h | 31.0 |
| 570 | 250000.0h | 30.0 |
| 580 | 10000.0h | 56.0 |
| 580 | 30000.0h | 44.0 |
| 580 | 50000.0h | 39.0 |
| 580 | 100000.0h | 33.0 |
| 580 | 150000.0h | 30.0 |
| 580 | 200000.0h | 28.0 |
| 580 | 250000.0h | 27.0 |
| 590 | 10000.0h | 50.0 |
| 590 | 30000.0h | 39.0 |
| 590 | 50000.0h | 35.0 |
| 590 | 100000.0h | 29.0 |
| 590 | 150000.0h | 27.0 |
| 590 | 200000.0h | 25.0 |
| 600 | 10000.0h | 45.0 |
| 600 | 30000.0h | 35.0 |
| 600 | 50000.0h | 31.0 |
| 600 | 100000.0h | 26.0 |
| 610 | 10000.0h | 40.0 |
| 610 | 30000.0h | 31.0 |
| 610 | 50000.0h | 28.0 |
| 620 | 10000.0h | 36.0 |
| 620 | 30000.0h | 28.0 |
| 620 | 50000.0h | 25.0 |
| 630 | 10000.0h | 32.0 |
| 630 | 30000.0h | 25.0 |
| 640 | 10000.0h | 29.0 |
| 650 | 10000.0h | 26.0 |