DIN 1629 Seamless Circular Unalloyed Steel Tubes Subject to Special Requirements
| Specification | DIN 1629 Seamless Circular Unalloyed Steel Tubes Subject to Special Requirements |
| Standard | DIN 1629 |
| Equivalents | EN 10216-1, ASTM A252, BS 4360, NF A 49-311 |
| Materials | St52, 1.0421 |
Chemistry Composition of DIN 1629 St52, 1.0421
| C, % | Si, % | Mn, % | P, % | S, % |
| 0.22 max | 0.55 max | 1.60 max | 0.040 max | 0.035 max |
Mechanical Properties of DIN 1629 St52, 1.0421
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % |
| 500-650 | 355 min | 21 min |