17-4PH vs X2CrNiMoN25-7-4: 43% composition overlap. Significantly different materials serving different application areas.
17-4PH vs X2CrNiMoN25-7-4
Side-by-side chemical composition and mechanical property comparison.
Overview
17-4PH
1.4542
The most widely used precipitation-hardening stainless steel. Combines high strength (up to 1310 MPa UTS) with corrosion resistance comparable to 304. Delivered solution-annealed and hardened by simple low-temperature aging. Used in aerospace, medical, oil & gas, and nuclear applications.
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.
| 17-4PH | X2CrNiMoN25-7-4 | |
|---|---|---|
| Material Number | 1.4542 | 1.4410 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-3 | EN 10088-2 |
Chemical composition (wt%)
| Element | 17-4PH | X2CrNiMoN25-7-4 | Overlap |
|---|---|---|---|
| C | 0–0.07% | ≤ 0.03% | OK |
| Si | 0–0.7% | ≤ 0.8% | OK |
| Mn | 0–1.5% | ≤ 1.2% | OK |
| P | 0–0.04% | ≤ 0.035% | OK |
Mechanical properties
| Property | 17-4PH | X2CrNiMoN25-7-4 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 800–1000 | MPa |
| yield_strength | ≥ 1170 | ≥ 550 | MPa |
| elongation | ≥ 10 | ≥ 15 | % |
Compatibility Assessment
17-4PH and X2CrNiMoN25-7-4 have significantly different compositions (43% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 17-4PH the same as X2CrNiMoN25-7-4?
17-4PH and X2CrNiMoN25-7-4 have a 43% composition overlap. They are generally not directly interchangeable.
Can I replace 17-4PH with X2CrNiMoN25-7-4?
Generally not recommended. The compositions differ significantly (43% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 17-4PH and X2CrNiMoN25-7-4?
The main differences are in the following elements: Cr, Ni, Cu. 17-4PH 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.
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