Introduction
CD3MWCuN is a duplex stainless steel casting grade recorded under ASTM A351. It belongs to the austenitic-ferritic family of corrosion-resistant cast alloys. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | CD3MWCuN |
| Material Type | Stainless Steel |
| Sub Type | Duplex Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Grades
- GX2CrNiMoN25-7-3 (1.4417) — EN 10213 / ISO 11972[1]
Notes
- [1] Source: ISO 11972:2023, Table A.1 (similar grade reference); Historical manual confirmation (similar grade reference).
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM A351 | Standard Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts | 03 | CD3MWCuN | UNS J93380 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A351Edition 03 |
|---|---|
| C | ≤ 0.03 % |
| Si | ≤ 1.00 % |
| Mn | ≤ 1.00 % |
| P | ≤ 0.030 % |
| S | ≤ 0.025 % |
| Cr | 24.0–26.0 % |
| Ni | 6.5–8.5 % |
| Mo | 3.0–4.0 % |
| Cu | 0.5–1.0 % |
| N | 0.20–0.30 % |
| W | 0.5–1.0 % |
Heat Treatment
ASTM A351–03 · Heat treatment
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat treat | ≥ 2010 °F / ≥ 1100 °C | — |
| 2 | Quench or rapid cool | — | water quench or rapid cooling by other means |
Mechanical Properties
| Property | ASTM A351Edition 03 |
|---|---|
| Tensile Strength | ≥ 100 ksi ≥ 700 MPa |
| Yield Strength (Rp0.2) | ≥ 65 ksi ≥ 450 MPa |
| Elongation | ≥ 25.0 % |
Welding Conditions
N/A
Applications
Typical casting applications include cast pump components for demanding corrosive fluid-handling service, including pulp and paper applications.
Last Updated: October 16, 2026