DIN 17155 17Mn4 is the outdated German specification for pressure vessel steels and boiler quality plate.
17Mn4 steel application: Boiler Plate,petroleum,power plants, boiler, reactor, separator, oil tank.
DIN17155 17Mn4 chemical analysis -% by mass* (max)
| Grade | C. % | Mn% | S | N | Cu | Nb | Ti | Si | P | AL | Cr | Mo | Ni | Vi |
| 17Mn4 | 0.08-0.2 | 0.9-1.5 | 0.015 | 0.012 | 0.3 | 0.02 | 0.03 | 0.4 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 | 0.02 |
DIN17155 17Mn4 mechanical properties
| Grade | Type | Thickness mm | Yield strength Mpa(min) | Tensile Strength MPa | Elongation % (min) | Impact Energy (KVJ) (min) | ||
| -20° | 0° | +20 | ||||||
| 17Mn4 | Normalized | ≤16 16>to≤40 40>to≤60 60>to≤100 100>to≤150 150>to≤250 | 295 | 460-580 | 21 | 27 | 34 | 40 |
| 290 | 460-580 | 21 | 27 | 34 | 40 | |||
| 285 | 460-580 | 21 | 27 | 34 | 40 | |||
| 260 | 460-580 | 21 | 27 | 34 | 40 | |||
| 235 | 440-570 | 21 | 27 | 34 | 40 | |||
| 220 | 430-570 | 21 | 27 | 34 | 40 | |||
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