1.0503 / 1.0503.07 QT steel
| Material No. | 1.0503 / 1.0503.07 |
| US Standard (AISI) | 1045, 1043 / -- |
| Abbreviation | C45 / C45 K |
| Older designation | - |
| Description | QT steel |
| Composition Alloy components [%] | C: 0.42 - 0.50 Si: ≤ 0.40 Mn: 0.50 - 0.80 P: ≤ 0.045 S: ≤ 0.045 Cr: ≤ 0.40 Mo: ≤ 0.10 Ni: ≤ 0.40 |
| Density [g/cm³] | 7.85 |
Yield point | ≥ 275 |
| Tensile strength Rm [N/mm²] | 560 |
| Elongation at fracture A [%] | ≥ 16 |
| Machinability | good |
| Weldability | unsuitable |
| Heat treatment | possible |
| Other properties | - |
| Main applications | Stops, base rails, stop with positive down force, cam-action indexing plunger, clamp straps, hook clamp holders |
Information for reference only; we do not assume any liability for its accuracy. Properties of steel materials are highly dependent on thermal and/or mechanical treatment.