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Quality 1.3974.7
General Product Description
Material number 1.3974.7
Short name according to EN 1.3974.7
AISI / UNS / Alloy F49
Applicable standards WL 1.3974, WW, SEW 390
Treatment warm work hardended
Variations
| Quality | Treatment | Shape | Dimension (mm) |
|---|---|---|---|
| 1.3974.7 | warm work hardended |  Round | 12 - 50 |
Description
The material 1.3974 is an austenitic, non-magnetizable Cr-Ni-Mo-N steel. Resistant to seawater intergranular and stress corrosion cracking. High yield strength. Application: shipbuilding, electrical engineering, mechanical engineering, preferred for shipbuilding, resistant to intergranular corrosion, pitting corrosion and stress corrosion cracking.
Chemical composition (in %)
| C | Cr | Mo | Mn | Si | N | P | S | Ni | Nb | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | 21,5 | 2,8 | 4,5 | - | 0,30 | - | - | 15,5 | 0,1 |
| Max | 0,03 | 24,5 | 3,4 | 6,5 | 1,00 | 0,50 | 0,025 | 0,01 | 18,0 | 0,3 |
| Element | Min | Max |
|---|---|---|
| C | - | 0,03 |
| Cr | 21,5 | 24,5 |
| Mo | 2,8 | 3,4 |
| Mn | 4,5 | 6,5 |
| Si | - | 1,00 |
| N | 0,30 | 0,50 |
| P | - | 0,025 |
| S | - | 0,01 |
| Ni | 15,5 | 18,0 |
| Nb | 0,1 | 0,3 |
Mechanical properties (work-/cold-hardened)
Tensile strength Rm ≤ 1040 MPa
0.2% proof stress Rp0.2 ≥ 940 MPa
Elongation at break A5 ≥ 15 %
Notched impact energy (ISO-V) ≥ 50 J
Magnetizability No
Typical areas of application
Shipbuilding
electrical engineering
Mechanical engineering
fasteners
Energy Engineering
aerospace technology
General properties (work-/cold-hardened)
Corrosion Resistance
Weldability
Forgeability
Tensionability
Note
All information in this data sheet has been compiled to the best of our knowledge and belief. It is for information purposes only and does not constitute a assured property or guarantee. For the suitability of the material in specific applications, we recommend carrying out appropriate inspections and tests. Any liability for damage or errors is excluded.