15-5PH / X5CrNiCuNb15-5 vs 304L: 47% composition overlap. Significantly different materials serving different application areas.
15-5PH / X5CrNiCuNb15-5 vs 304L
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.
304L
1.4307
Low-carbon version of 304. Maximum 0.030% C prevents sensitization during welding — no post-weld heat treatment needed. The standard choice for welded structures in food, chemical, and pharmaceutical industries. Often dual-certified with 1.4301.
| 15-5PH / X5CrNiCuNb15-5 | 304L | |
|---|---|---|
| Material Number | 1.4545 | 1.4307 |
| Category | Stainless Steel | Stainless Steel |
| Standard | AMS 5659 | EN 10088-2 |
Chemical composition (wt%)
| Element | 15-5PH / X5CrNiCuNb15-5 | 304L | 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% | 0–0.045% | OK |
Mechanical properties
| Property | 15-5PH / X5CrNiCuNb15-5 | 304L | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 500–700 | MPa |
| yield_strength | ≥ 1170 | ≥ 200 | MPa |
| elongation | ≥ 10 | ≥ 45 | % |
Compatibility Assessment
15-5PH / X5CrNiCuNb15-5 and 304L have significantly different compositions (47% 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 304L?
15-5PH / X5CrNiCuNb15-5 and 304L have a 47% composition overlap. They are generally not directly interchangeable.
Can I replace 15-5PH / X5CrNiCuNb15-5 with 304L?
Generally not recommended. The compositions differ significantly (47% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 15-5PH / X5CrNiCuNb15-5 and 304L?
The main differences are in the following elements: Cr, Ni. 15-5PH / X5CrNiCuNb15-5 is a Stainless Steel grade, while 304L is a Stainless Steel grade.
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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.