DIN17175 Seamless Boiler Tube
DIN 17175 seamless boiler tube
Chemical composition:
| Steel grade | Chemical composition in weight % | |||||||
| Code number | Material number | C | Si | Mn |
P max. |
S max. |
Cr | Mo |
| St 35.8 | 1.0305 | ≤0.17 | 0.10-0.35 | 0.40-0.80 | 0.040 | |||
| St 45.8 | 1.0405 | ≤0.21 | 0.10-0.35 | 0.40-1.20 | 0.040 | 0.040 | ||
| 19Mn5 | 1.0482 | 0.17-0.22 | 0.30-0.60 | 1.00-1.30 | 0.040 | 0.040 | ≤0.30 | |
| 15Mo3 | 1.5415 | 0.12-0.20 | 0.10-0.35 | 0.40-0.80 | 0.035 | 0.035 | 0.25-0.35 | |
| 13CrMo44 | 1.7335 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | 0.035 | 0.035 | 0.70-1.10 | 0.45-0.65 |
Mechanical properties:
| Steel grade |
Tensile strength
N/mm2 |
Yield point for wall thickness in mm ≤16 >16≤40 >40≤60 N/mm2 minimum |
Elogation at fracture (Lo=5·do) long. transv. % minimum |
||||
| Code number | Material number | ||||||
| St 35.8 | 1.0305 | 360-480 | 235 | 225 | 215 | 25 | 23 |
| St 45.8 | 1.0405 | 410-530 | 255 | 245 | 235 | 21 | 19 |
| 19Mn5 | 1.0482 | 510-610 | 310 | 310 | 300 | 19 | 17 |
| 15Mo3 | 1.5415 | 450-600 | 270 | 270 | 260 | 22 | 20 |
| 13CrMo44 | 1.7335 | 440-590 | 290 | 290 | 280 | 22 | 20 |
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