ČSN 11 523 / 1.0570 / ST52.3
CZK 0
Characteristics
Unalloyed structural fine-grained steel appropriate for welding.
Suitability
Bridge and other welded constructions, bent profiles, welded constructions from hollow profiles and parts of machines, cars, motorcycles and bicycles. Parts of thermal energy facilities and parts of pressure containers made from bars.
Chemical composition of steel W. Nr. 1.0570
| Steel grade | Chemical composition in % | Hardness in the state | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| soft-annealed | heat-treated | ||||||||||||
| C | Mn | Si | Cr | W | Mo | V | Ni max | Co | P max. | S max. | HB max. | HRC min. | |
| 1.0570 | max 0,20 | max 1,60 | max 0,55 | 0,040 | 0,045 | ||||||||
Heat treatment of steel W. Nr. 1.0570
| Way | Temperature [°C] | Procedure | |
|---|---|---|---|
| Normaliziation | 870-900 | Cool in air, big cross-sections faster | |
| Soft annealing | 680-710 | Cool slowly | |
| Tempering | 670-700 | Cool in air | |
