15-5PH / X5CrNiCuNb15-5 vs X2CrNi19-11: 39% composition overlap. Significantly different materials serving different application areas.
15-5PH / X5CrNiCuNb15-5 vs X2CrNi19-11
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.
X2CrNi19-11
1.4306
Low-carbon 18/10 austenitic stainless — AISI 304L. C max 0.030% prevents sensitization after welding without stabilizing elements. THE welding-grade 304. Slightly higher Ni (10-12.5%) than 1.4301 (304) for better austenite stability. Used for welded vessels, piping, food equipment, and any 304 application requiring post-weld corrosion resistance without solution annealing.
| 15-5PH / X5CrNiCuNb15-5 | X2CrNi19-11 | |
|---|---|---|
| Material Number | 1.4545 | 1.4306 |
| Category | Stainless Steel | Stainless Steel |
| Standard | AMS 5659 | EN 10088-3 |
Chemical composition (wt%)
| Element | 15-5PH / X5CrNiCuNb15-5 | X2CrNi19-11 | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–1% | 0–2% | OK |
| P | 0–0.03% | — | — |
Mechanical properties
| Property | 15-5PH / X5CrNiCuNb15-5 | X2CrNi19-11 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 480–680 | MPa |
| yield_strength | ≥ 1170 | ≥ 175 | MPa |
| elongation | ≥ 10 | ≥ 40 | % |
Compatibility Assessment
15-5PH / X5CrNiCuNb15-5 and X2CrNi19-11 have significantly different compositions (39% 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 X2CrNi19-11?
15-5PH / X5CrNiCuNb15-5 and X2CrNi19-11 have a 39% composition overlap. They are generally not directly interchangeable.
Can I replace 15-5PH / X5CrNiCuNb15-5 with X2CrNi19-11?
Generally not recommended. The compositions differ significantly (39% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 15-5PH / X5CrNiCuNb15-5 and X2CrNi19-11?
The main differences are in the following elements: Cr, Ni. 15-5PH / X5CrNiCuNb15-5 is a Stainless Steel grade, while X2CrNi19-11 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.