15-5PH / X5CrNiCuNb15-5 vs X2CrNiMoN25-7-4: 45% composition overlap. Significantly different materials serving different application areas.
15-5PH / X5CrNiCuNb15-5 vs X2CrNiMoN25-7-4
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.
X2CrNiMoN25-7-4
1.4410
Super duplex stainless steel (SAF 2507 / UNS S32750) with 25% Cr, 7% Ni, 4% Mo, and high N for PREN ≥42. The highest corrosion resistance and strength among standard duplex grades — YS ≥550 MPa is ~2.5× that of 316L. Service temperature up to 300°C. Used for subsea oil & gas equipment (manifolds, trees, risers), desalination plants, flue gas cleaning, chemical tankers, and mining equipment in severe chloride environments. Requires careful welding to avoid sigma phase.
| 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN25-7-4 | |
|---|---|---|
| Material Number | 1.4545 | 1.4410 |
| Category | Stainless Steel | Stainless Steel |
| Standard | AMS 5659 | EN 10088-2 |
Chemical composition (wt%)
| Element | 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN25-7-4 | Overlap |
|---|---|---|---|
| C | 0–0.07% | ≤ 0.03% | OK |
| Si | 0–1% | ≤ 0.8% | OK |
| Mn | 0–1% | ≤ 1.2% | OK |
| P | 0–0.03% | ≤ 0.035% | OK |
Mechanical properties
| Property | 15-5PH / X5CrNiCuNb15-5 | X2CrNiMoN25-7-4 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 800–1000 | MPa |
| yield_strength | ≥ 1170 | ≥ 550 | MPa |
| elongation | ≥ 10 | ≥ 15 | % |
Compatibility Assessment
15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN25-7-4 have significantly different compositions (45% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 15-5PH / X5CrNiCuNb15-5 the same as X2CrNiMoN25-7-4?
15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN25-7-4 have a 45% composition overlap. They are generally not directly interchangeable.
Can I replace 15-5PH / X5CrNiCuNb15-5 with X2CrNiMoN25-7-4?
Generally not recommended. The compositions differ significantly (45% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 15-5PH / X5CrNiCuNb15-5 and X2CrNiMoN25-7-4?
The main differences are in the following elements: Cr, Ni, Cu. 15-5PH / X5CrNiCuNb15-5 is a Stainless Steel grade, while X2CrNiMoN25-7-4 is a Stainless Steel grade.
Related Comparisons
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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.