Inconel 601
2.4851Nickel-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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS N06601 | N06601 | REF |
| 🇪🇺 | EN | Europe | NiCr23Fe / 2.4851 | 2.4851 | 100% |
Sources: ASTM B168, EN 10095
Chemical composition comparison (wt%)
Side-by-side: Inconel 601 (UNS) (ASTM B168) vs NiCr23Fe / 2.4851 (EN)
| Element | Inconel 601 (UNS) | NiCr23Fe / 2.4851 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.1% | — | — |
| Si | 0–0.5% | — | — |
| Mn | 0–1% | — | — |
| S | 0–0.015% | — | — |
| Cr | 21–25% | — | — |
| Ni | 58–63% | — | — |
| Cu | 0–1% | — | — |
| Al | 1–1.7% | — | — |
| Fe | — | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 550–750 | MPa |
| Yield Strength | 205–310 | MPa |
| Elongation | 30–50 | % |
| Elastic Modulus | ≥ 207 | GPa |
| Density | ≥ 8.11 | g/cm3 |
Compatibility verdict
Inconel 601 and NiCr23Fe / 2.4851: 100% composition match
Close equivalents but NOT identical.
Related materials
Hastelloy C-22
2.4602Improved version of Hastelloy C-276 with better resistance to oxidizing media and higher chromium. Considered the most versatile Ni-Cr-Mo alloy for chemical processing. Resists both oxidizing and reducing acids, chlorides, and mixed media. Used for flue gas desulfurization, pharmaceutical, and universal chemical processing.
Alloy 20 / Carpenter 20
2.4660Austenitic Ni-Fe-Cr alloy specifically developed for sulfuric acid resistance. Nb-stabilized against sensitization. Cu addition gives outstanding resistance to H2SO4 at all concentrations up to 80%. Used for sulfuric acid piping, heat exchangers, mixing tanks, pickling equipment, and pharmaceutical processing.
Nimonic 80A
2.4952Nickel-chromium age-hardenable alloy with Ti + Al for gamma-prime strengthening. Developed originally for gas turbine blades. Good creep resistance to ~700°C. Used for exhaust valves, springs at elevated temperatures, nuclear engineering fasteners, and gas turbine components. ≈ UNS N07080.
Not sure which material fits?
🤖 Ask AI Advisor →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.