Germany · DIN
12 Ni 19
DIN 17173:1985 — Seamless steel tubes for low temperatures; technical delivery conditions
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.15 | |||
| Mn | 0.3 | 0.8 | ||
| Ni | 4.5 | 5.3 | ||
| P | 0.025 | |||
| S | 0.02 | |||
| Si | 0.35 | |||
| V | 0.05 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| Seamless tubes +V, 25 < d <= 40 mm | ≥380 | 510–710 | ≥17；≥19 | ≥50 ISO V-Notch acc. to DIN 50115；≥70 ISO V-Notch acc. to DIN 50115 | ||
| Seamless tubes +V, d <= 25 mm | ≥390 | 510–710 | ≥17；≥19 | ≥50 ISO V-Notch acc. to DIN 50115；≥70 ISO V-Notch acc. to DIN 50115 |