Inconel 601 vs Inconel 625: 41% composition overlap. Significantly different materials serving different application areas.
Inconel 601 vs Inconel 625
Side-by-side chemical composition and mechanical property comparison.
Overview
Inconel 601
2.4851
Nickel-chromium-iron alloy with aluminum for outstanding high-temperature oxidation resistance up to 1200°C. The Al forms a protective oxide scale resistant to spalling under cyclic thermal conditions. Better oxidation resistance than Inconel 600 (which lacks Al). Used for furnace hardware (baskets, trays, fixtures), radiant tubes, thermocouple protection tubes, catalyst support grids, and thermal reactors in automotive exhaust systems.
Inconel 625
2.4856
Nickel-chromium-molybdenum-niobium superalloy. Solid-solution strengthened (no precipitation hardening required). Outstanding corrosion resistance from cryogenic to 982°C. Used for jet engine exhaust systems, marine components, chemical processing, flare stacks, and nuclear applications.
| Inconel 601 | Inconel 625 | |
|---|---|---|
| Material Number | 2.4851 | 2.4856 |
| Category | Nickel Alloys | Nickel Alloys |
| Standard | EN 10095 | ASTM B443 |
Chemical composition (wt%)
| Element | Inconel 601 | Inconel 625 | Overlap |
|---|---|---|---|
| C | 0–0.1% | 0–0.1% | OK |
| Si | 0–0.5% | 0–0.5% | OK |
| Mn | 0–1% | 0–0.5% | OK |
| S | 0–0.015% | — | — |
Mechanical properties
| Property | Inconel 601 | Inconel 625 | Unit |
|---|---|---|---|
| tensile_strength | 550–750 | ≥ 827 | MPa |
| yield_strength | 205–310 | ≥ 414 | MPa |
| elongation | 30–50 | ≥ 30 | % |
Compatibility Assessment
Inconel 601 and Inconel 625 have significantly different compositions (41% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Inconel 601 the same as Inconel 625?
Inconel 601 and Inconel 625 have a 41% composition overlap. They are generally not directly interchangeable.
Can I replace Inconel 601 with Inconel 625?
Generally not recommended. The compositions differ significantly (41% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Inconel 601 and Inconel 625?
The main differences are in the following elements: Cr, Al. Inconel 601 is a Nickel Alloys grade, while Inconel 625 is a Nickel Alloys 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.