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Quality 1.3974.9
General Product Description
Material number 1.3974.9
Short name according to EN 1.3974.9
AISI / UNS / Alloy UNS S33228
Applicable standards WL 1.3974, WW, SEW 390
Treatment solution annealed
Variations
| Quality | Treatment | Shape | Dimension (mm) |
|---|---|---|---|
| 1.3974.9 | solution annealed |  Round | 18 - 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 | P | Ni | S | Nb | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | 21,5 | 2,8 | 4,5 | - | - | 15,5 | - | 0,1 | 0,30 |
| Max | 0,03 | 24,5 | 3,4 | 6,5 | 1,0 | 0,025 | 18,0 | 0,01 | 0,3 | 0,50 |
| Element | Min | Max |
|---|---|---|
| C | - | 0,03 |
| Cr | 21,5 | 24,5 |
| Mo | 2,8 | 3,4 |
| Mn | 4,5 | 6,5 |
| Si | - | 1,0 |
| P | - | 0,025 |
| Ni | 15,5 | 18,0 |
| S | - | 0,01 |
| Nb | 0,1 | 0,3 |
| N | 0,30 | 0,50 |
Mechanical properties (solution-annealed)
Tensile strength Rm 700–900 N/mm2
0.2% proof stress Rp0.2 ≥ 450 N/mm2
Elongation at break A5 ≥ 25 %
Notched impact energy (ISO-V) ≥ 100 J
Hardness ≤ 280 HB
Magnetizability No
Typical areas of application
Shipbuilding
Mechanical engineering
Plant Engineering
Seawater Technology
electrical engineering
Defence Industry
General properties (solution-annealed)
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.