GX2CrNiMoN22-5-3 (1.4470) chemical composition
Ferritic-austenitic (duplex) cast steel supplied solution annealed and water quenched (+AT). Used for pump casings, impellers and valve bodies in seawater, chemical and offshore service where resistance to chloride pitting and stress corrosion cracking is needed.
- Designation
- GX2CrNiMoN22-5-3
- Material no.
- 1.4470
- Standard
- EN 10283
- Also known as
- Cast 2205, ≈ ASTM A890 / A995 Grade 4A CD3MN (UNS J92205), ≈ 1.4462 X2CrNiMoN22-5-3 (wrought), ≈ UNS S31803 / S32205 (wrought), 22Cr-5Ni-3Mo-N
- Family
- Duplex & super duplex stainless cast steel
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | – | 0.03 |
| SiSilicon | – | 1.00 |
| MnManganese | – | 2.00 |
| PPhosphorus | – | 0.035 |
| SSulphur | – | 0.025 |
| CrChromium | 21.0 | 23.0 |
| NiNickel | 4.50 | 6.50 |
| MoMolybdenum | 2.50 | 3.50 |
| NNitrogen | 0.12 | 0.20 |
| FeIron | remainder | |
Basis of values: Limits per EN 10283.
We cast GX2CrNiMoN22-5-3
Tsitouras Foundry casts duplex and super duplex pump casings, impellers and process components, with heat treatment, 3D-printed sand cores for complex passages, CNC machining and dynamic balancing in the group's own shops. Every heat is analysed by OES and supplied with an EN 10204 3.1 certificate.
- Sand casting at our foundry in Mandra, Attica; centrifugal casting for bushings, sleeves and liners
- Heat treatment at the foundry (water, oil or air quench); CNC machining in our machine shop in Perama
- Spectrometer analysis of every heat, mechanical testing and NDT
- EN 10204 3.1 inspection certificates; ISO 9001 (both plants) and ISO 14001 (foundry) certified
Other grades in this family
For information only, without warranty: limits per the cited standard or, where stated, typical or house values; ≈ marks a comparable grade, not an equivalent. The current edition of the standard, the purchase order and the drawing govern.