DIN 2391 Seamless precision steel tubes
Chemical Composition of DIN 2391 St52.0 Carbon Steel Pipes
| C % | Si % | Mn % | P % | S % |
| 0.22 max | 0.55 max | 1.60 min | 0.025 max | 0.025 max |
Mechanical Properties of DIN 2391 St52.0 Carbon Steel Pipes
| Tensile Strength, Mpa | Yield Strength, MPa | Elongation, % | Delivery Condition, % |
| 640 | 512 min | 4 min | BK |
| 580 | 406 min | 7 min | BKW |
| 580 | 420 min | 10 min | BKS |
| 3490 | 245 min | 22 min | GBK |
| 490-630 | 355 min | 22 min | NBK |