DIN 2391 Seamless precision steel tubes
Chemical Composition of DIN 2391 St45.0 Carbon Steel Pipes
| C % | Si % | Mn % | P % | S % |
| 0.21 max | 0.35 max | 0.40 min | 0.025 max | 0.025 max |
Mechanical Properties of DIN 2391 St45.0 Carbon Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Delivery Condition, % |
| 580 | 464 min | 5 min | BK |
| 520 | 364 min | 8 min | BKW |
| 520 | 375 min | 12 min | BKS |
| 390 | 195 min | 21 min | GBK |
| 440-570 | 255 min | 21 min | NBK |