17-4PH vs 430 Stainless Steel: 85% composition overlap. Some similarities but notable differences in alloying elements.
17-4PH vs 430 Stainless Steel
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.
430 Stainless Steel
1.4016
Ferritic chromium stainless steel with good corrosion resistance and formability. Lower cost than austenitic grades. Used for automotive trim, kitchen sinks, architectural panels, and appliance components.
| 17-4PH | 430 Stainless Steel | |
|---|---|---|
| Material Number | 1.4542 | 1.4016 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-3 | EN 10088-2 |
Chemical composition (wt%)
| Element | 17-4PH | 430 Stainless Steel | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.08% | OK |
| Si | 0–0.7% | 0–1% | OK |
| Mn | 0–1.5% | 0–1% | OK |
| P | 0–0.04% | 0–0.04% | OK |
Mechanical properties
| Property | 17-4PH | 430 Stainless Steel | Unit |
|---|---|---|---|
| tensile_strength | ≥ 1310 | 450–600 | MPa |
| yield_strength | ≥ 1170 | ≥ 260 | MPa |
| elongation | ≥ 10 | ≥ 20 | % |
Compatibility Assessment
17-4PH and 430 Stainless Steel share some characteristics (85% overlap) but have notable differences. They may be substitutable in some applications but not all. Verify suitability carefully.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 17-4PH the same as 430 Stainless Steel?
17-4PH and 430 Stainless Steel have a 85% composition overlap. For most purposes, they can be considered similar.
Can I replace 17-4PH with 430 Stainless Steel?
In many cases, yes. The compositions overlap significantly (85%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between 17-4PH and 430 Stainless Steel?
The main differences are in the following elements: Cr. 17-4PH is a Stainless Steel grade, while 430 Stainless Steel 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.