Alloy 24 / 1.4565
Material Data Sheet
| Material Designation | 1.4565 | |
|---|---|---|
| Alloy | Alloy 24 | |
| EN Name | X2CrNiMnMoNbN25-18- 5-4 | |
| UNS | S34565 | |
| Brand Names | 4565 S/ P512 | |
| Standards | EN 10088-2/ ASTM S240/ SEW 400 | |
| VdTÜV | 509 |
Main fields of application of 1.4565
Alloy 24 is a nitrogen and molybdenum alloyed austenitic stainless steel, resistant to intergranular corrosion and excellent resistance to pitting, crevice corrosion and stress corrosion cracking in sea water and other corrosive media.
Fields of application are:
Chemical Process Industry (CPI)
Flue gas desulphurisation (FGD) in power plants as well as on large sea going vessels
Seawater desalination and other seawater applications
Food industry
Pharmaceutical industry
Heat exchangers
Chemical composition of 1.4565
| Ni % | Cr % | Mn % | Mo % | N % | C % | Fe |
|---|---|---|---|---|---|---|
| 17 | 24 | 5.5 | 4.5 | 0.45 | 0-0,2 | Rest |
Characteristics of 1.4565
| Temperature-range | Wet corrosion material up to ~400°C |
|---|---|
| ISO-V charpy | 120J (longitudinal))/ 90J (transverse) >10mm material at RT |
| Elongation Rp0,2 | 420N/mm² (240N/mm² bei 400°C) |
| Tensile Rm | 800N/mm² |
| Extension 100°C to 20°C | 14,5 |
Some properties of Alloy 24
Very good general corrosion properties
Very high resistance to localized corrosion such as pitting and crevice corrosion
Very good resistance to different types of stress corrosion cracking
Very good mechanical properties
Very good weldability
Very good formability
Many active references
Acc VDTÜV Werkstoffblatt applicable for pressure applications in a temperature range of -196-400 ° C
Very good resistance in seawater applications and other applications of acids and alkalis
Described in the standard for German swimming pool construction and tunnel applications Z-30.3-6 in the resistance class IV (5 / severe)
Use in flue gas desulfurization in power plants and vessel FGD
Substitute for various alloys such as Duplex, Alloy 31 or nickel alloys with many advantages