ČSN 11 523 / 1.0570 / ST52.3
0 CZK
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 ČSN 11 523
| 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. | |
| DIN není | |||||||||||||
| ČSN 11 523 | max 0,20 | max 1,60 | max 0,55 | 0,040 | 0,045 | ||||||||
Heat treatment of steel ČSN 11 523
| 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 | |
Note
- Kind of steel according to the way of production – killed fine-grained
- Coloured marking according to ČSN 42 0010 – black/green
- Class of waste according to ČSN 42 0300 - 001
