Material data sheet 1.4913
International Standards:
X19CrMoNbVN11-1 | EN 10269, EN 10302, EN 17240, AFNOR Z20CDNBV11
Applications:
A martensitic, high-temperature chromium steel with excellent corrosion resistance under oxidizing conditions. The material is magnetizable. Welding is not recommended due to its tendency to harden and crack.
With a chromium content of 10.0-11.5%, 1.4913 is considered a high-temperature steel. It is suitable for use at continuous operating temperatures up to approximately 580°C. For example, high-temperature fasteners (screws, nuts, bolts), springs, valves, and turbine components such as rotors, disks, and blades in power plant and turbine construction.
Area of application:
| - Power plant construction |
| - Turbine and energy plant construction |
| - Mechanical engineering |
| - Aerospace |
Characteristics:
| Polishability | n/a |
| Weldability | Welding is not recommended as the material tends to form cracks and a hard, brittle structure. |
| Machinability | In the annealed state, the material is easily machined. The machining properties of 1.4913 are similar to those of austenitic stainless steels, but due to its hardness, modified machining is required. |
| Forgeability | 1.4913 can be hot-formed in the temperature range of 1100 - 850 °C. Tempering must generally follow hot-forming. |
| Corrosion resistance | Excellent corrosion resistance |
| Corrosion class | n/a |
Physical properties:
| Density | 7.8 g/cm³ |
| Electrical resistance at 20°C (Ω mm2 /m) | 0,75 |
| Thermal conductivity at 20°C (W/m K) | 23.0 W/m °C |
| Magnetizability | is available |
Mechanical properties:
| 0,2 % proof strength | 780 MPa |
| Tensile strength | min. 950 Mpa |
| Elongation at break (transverse) | at least 10% |
Processing:
| Cold heading | n/a |
| Open-die and drop forging | Yes |
| Machining | This depends on the strength and hardness. |
Heat treatment:
| Welding | The weldability of 1.4913 is not optimal, but is possible with suitable processes and preheat treatment. |
| Annealing | The material 1.4913 is heated to 750 to 850°C for soft annealing. Soft annealing serves to improve the cold formability of the steel by reducing stresses in the material and promoting recrystallization. |
| Stress relieving annealing | For 1.4913, this process is typically carried out at temperatures between 550 and 650°C, with the holding time usually being 1-2 hours. |
| Hardening | This material can be hardened. |
Chemical analysis:
| 1.4913 | C | Si | Mn | P | S | Cr | Mo | Ni | Al | N | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | 0,17 | 0,4 | 10,0 | 0,5 | 0,2 | 0,05 | 0,25 | ||||
| max. | 0,23 | 0,50 | 0,50 | 0,025 | 0,015 | 11,5 | 0,8 | 0,6 | 0,02 | 0,10 | 0,55 |
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