
| Grade Designation | Cast Grade / Standard | Equivalent Wrought / UNS | Key Elements Balance (%) | Minimum Tensile Strength (MPa) | Minimum Yield Strength (MPa) | Typical Applications |
| CD3MN | ASTM A890 Grade 4A / J92205 | 2205 / S31803 / S32205 | Cr 21.0-23.5, Ni 4.5-6.5, Mo 2.5-3.5, N 0.10-0.30 | 620 | 450 | Duplex cast valves, pump impellers, desalination components, chemical process equipment |
| CE3MN | ASTM A890 Grade 5A / J93404 | 2507 / S32750 | Cr 24.0-26.0, Ni 6.0-8.0, Mo 4.0-5.0, N 0.10-0.30 | 690 | 515 | Super duplex cast components, offshore manifolds, seawater systems, high-pressure acid piping |
| CD3MWCuN | ASTM A890 Grade 6A / J93380 | Zeron 100 / S32760 | Cr 24.0-26.0, Ni 6.5-8.5, Mo 3.0-4.0, Cu 0.5-1.0, W 0.5-1.0, N 0.20-0.30 | 690 | 485 | Heavy-duty marine castings, flue gas scrubber pumps, high-strength corrosive liquid pumps |
Microstructure: Dual-phase ferrite-austenite (typically 40 to 60 percent ferrite range)
Pitting Resistance Equivalent Number (PREN):
CD3MN: ⥠34
CE3MN: ⥠40
CD3MWCuN: ⥠40
Cast Scrap Quality Guidelines:
Free of heavy sand inclusions, foundry cores, mold contamination, slag, and heavy oxide scale
Segregated from standard austenitic stainless steel castings (such as CF8M or CF3M) and carbon steel scrap
Free of foreign metallic attachments, excessive oils, dirt, grease, and paint coatings
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