CD3MN (UNS J92205) chemical composition
The cast counterpart of 2205 (22Cr-5Ni-3Mo-N) and the most widely used duplex casting grade. Low carbon and controlled nitrogen give good weldability and chloride resistance for general seawater and process valves and pumps.
- Designation
- CD3MN
- Material no.
- UNS J92205
- Standard
- ASTM A890 Grade 4A
- Also known as
- A890 4A, ≈ 1.4470 GX2CrNiMoN22-5-3 (EN cast), ≈ 2205 / F51 / 1.4462 (wrought), S31803 / S32205 (wrought)
- Family
- Duplex & super duplex stainless cast steel
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | – | 0.03 |
| SiSilicon | – | 1.00 |
| MnManganese | – | 1.50 |
| PPhosphorus | – | 0.04 |
| SSulphur | – | 0.02 |
| CrChromium | 21.0 | 23.5 |
| NiNickel | 4.50 | 6.50 |
| MoMolybdenum | 2.50 | 3.50 |
| CuCopper | – | 1.00 |
| NNitrogen | 0.10 | 0.30 |
| FeIron | remainder | |
Basis of values: Limits per ASTM A890 Grade 4A.
We cast CD3MN
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.