15-5PH / X5CrNiCuNb15-5 vs X2CrNiMoN22-5-3: 54% composition overlap. Moderate differences, generally not direct substitutes.
15-5PH / X5CrNiCuNb15-5 vs X2CrNiMoN22-5-3
Side-by-side chemical composition and mechanical property comparison.
Overview
15-5PH / X5CrNiCuNb15-5
1.4545
Martensitic precipitation-hardening stainless steel. Similar to 17-4PH but with better transverse ductility and toughness due to lower delta ferrite. Used for aerospace structural components, nuclear reactor parts, food processing equipment, and high-performance fasteners.
X2CrNiMoN22-5-3
1.4462
The most widely used duplex stainless steel worldwide (SAF 2205 / UNS S31803/S32205). Austenitic-ferritic microstructure provides ~2× yield strength of 304/316 (≥450 MPa) with excellent resistance to stress corrosion cracking, pitting (PREN 33-38), and intergranular corrosion. Service temperature -50°C to 300°C. Used for oil & gas production tubing, chemical processing vessels, desalination plants, pulp & paper digesters, heat exchangers, and bridge structures. Weldable with ER2209 filler.
| 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN22-5-3 | |
|---|---|---|
| Material Number | 1.4545 | 1.4462 |
| Category | Stainless Steel | Stainless Steel |
| Standard | AMS 5659 | EN 10088-2 |
Chemical composition (wt%)
| Element | 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN22-5-3 | Overlap |
|---|---|---|---|
| C | 0–0.07% | ≤ 0.03% | OK |
| Si | 0–1% | ≤ 1% | OK |
| Mn | 0–1% | ≤ 2% | OK |
| P | 0–0.03% | ≤ 0.035% | OK |
Mechanical properties
| Property | 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN22-5-3 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 650–880 | MPa |
| yield_strength | ≥ 1170 | ≥ 450 | MPa |
| elongation | ≥ 10 | ≥ 25 | % |
Compatibility Assessment
15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN22-5-3 have moderate differences (54% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 15-5PH / X5CrNiCuNb15-5 the same as X2CrNiMoN22-5-3?
15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN22-5-3 have a 54% composition overlap. They are generally not directly interchangeable.
Can I replace 15-5PH / X5CrNiCuNb15-5 with X2CrNiMoN22-5-3?
Generally not recommended. The compositions differ significantly (54% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN22-5-3?
The main differences are in the following elements: Cr, Ni. 15-5PH / X5CrNiCuNb15-5 is a Stainless Steel grade, while X2CrNiMoN22-5-3 is a Stainless Steel grade.
Related Comparisons
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.