CD3MWCuN (UNS J93380) chemical composition
Super duplex alloyed with both tungsten and copper; its PREN ≥ 40 requirement counts tungsten alongside molybdenum. The cast counterpart of Zeron 100 / S32760, used for seawater and firewater pumps, valves and offshore components.
- Designation
- CD3MWCuN
- Material no.
- UNS J93380
- Standard
- ASTM A890 Grade 6A
- Also known as
- A890 6A, ≈ Zeron 100 / F55 / 1.4501 (wrought), S32760 (wrought)
- Family
- Duplex & super duplex stainless cast steel
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | – | 0.03 |
| SiSilicon | – | 1.00 |
| MnManganese | – | 1.00 |
| PPhosphorus | – | 0.03 |
| SSulphur | – | 0.025 |
| CrChromium | 24.0 | 26.0 |
| NiNickel | 6.50 | 8.50 |
| MoMolybdenum | 3.00 | 4.00 |
| CuCopper | 0.50 | 1.00 |
| NNitrogen | 0.20 | 0.30 |
| WTungsten | 0.50 | 1.00 |
| FeIron | remainder | |
Basis of values: Limits per ASTM A890 Grade 6A.
Additional requirements: PREN: %Cr + 3.3 (%Mo + 0.5 %W) + 16 %N ≥ 40
We cast CD3MWCuN
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.