17-4PH vs 316 / X5CrNiMo17-12-2: 60% composition overlap. Moderate differences, generally not direct substitutes.
17-4PH vs 316 / X5CrNiMo17-12-2
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.
316 / X5CrNiMo17-12-2
1.4401
Standard-carbon austenitic stainless steel with molybdenum. Higher C than 316L (max 0.07% vs 0.03%) giving slightly higher strength. Same corrosion resistance as 316L. Used where welding is not required or post-weld solution annealing is possible.
| 17-4PH | 316 / X5CrNiMo17-12-2 | |
|---|---|---|
| Material Number | 1.4542 | 1.4401 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-3 | EN 10088-2 |
Chemical composition (wt%)
| Element | 17-4PH | 316 / X5CrNiMo17-12-2 | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.07% | OK |
| Si | 0–0.7% | 0–1% | OK |
| Mn | 0–1.5% | 0–2% | OK |
| P | 0–0.04% | 0–0.045% | OK |
Mechanical properties
| Property | 17-4PH | 316 / X5CrNiMo17-12-2 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 530–680 | MPa |
| yield_strength | ≥ 1170 | ≥ 220 | MPa |
| elongation | ≥ 10 | ≥ 40 | % |
Compatibility Assessment
17-4PH and 316 / X5CrNiMo17-12-2 have moderate differences (60% 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 316 / X5CrNiMo17-12-2?
17-4PH and 316 / X5CrNiMo17-12-2 have a 60% composition overlap. They are generally not directly interchangeable.
Can I replace 17-4PH with 316 / X5CrNiMo17-12-2?
Generally not recommended. The compositions differ significantly (60% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 17-4PH and 316 / X5CrNiMo17-12-2?
The main differences are in the following elements: Cr, Ni. 17-4PH is a Stainless Steel grade, while 316 / X5CrNiMo17-12-2 is a Stainless Steel grade.
Related Comparisons
View full data for each material:
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.