17-4PH vs X2CrNiMo17-12-2: 51% composition overlap. Moderate differences, generally not direct substitutes.
17-4PH vs X2CrNiMo17-12-2
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.
X2CrNiMo17-12-2
1.4404
Low-carbon molybdenum-bearing austenitic stainless steel, widely known as AISI 316L. The Mo addition (2–2.5%) significantly improves resistance to pitting and crevice corrosion compared to 1.4301 (304). Low carbon content (max 0.03%) ensures resistance to intergranular corrosion after welding without post-weld heat treatment. Standard grade for pharmaceutical, petrochemical, chemical and marine applications. PREN 23–29.
| 17-4PH | X2CrNiMo17-12-2 | |
|---|---|---|
| Material Number | 1.4542 | 1.4404 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-3 | EN 10088-3 |
Chemical composition (wt%)
| Element | 17-4PH | X2CrNiMo17-12-2 | Overlap |
|---|---|---|---|
| C | 0–0.07% | ≤ 0.03% | OK |
| Si | 0–0.7% | ≤ 1% | OK |
| Mn | 0–1.5% | ≤ 2% | OK |
| P | 0–0.04% | ≤ 0.045% | OK |
Mechanical properties
| Property | 17-4PH | X2CrNiMo17-12-2 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | — | MPa |
| yield_strength | ≥ 1170 | — | MPa |
| elongation | ≥ 10 | — | % |
Compatibility Assessment
17-4PH and X2CrNiMo17-12-2 have moderate differences (51% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 17-4PH the same as X2CrNiMo17-12-2?
17-4PH and X2CrNiMo17-12-2 have a 51% composition overlap. They are generally not directly interchangeable.
Can I replace 17-4PH with X2CrNiMo17-12-2?
Generally not recommended. The compositions differ significantly (51% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 17-4PH and X2CrNiMo17-12-2?
The main differences are in the following elements: Cr, Ni. 17-4PH is a Stainless Steel grade, while X2CrNiMo17-12-2 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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