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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS N07080 | N07080 | REF |
| 🇪🇺 | EN | Europe | Nimonic 80A / NiCr20TiAl | 2.4952 | 100% |
Sources: AMS 5544, EN 10269
Chemical composition comparison (wt%)
Side-by-side: Nimonic 80A (EN) (EN 10269) vs Nimonic 80A / NiCr20TiAl (EN) (EN 10269)
| Element | Nimonic 80A (EN) | Nimonic 80A / NiCr20TiAl (EN) | Overlap |
|---|---|---|---|
| C | 0.04–0.1% | 0.04–0.1% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–1% | 0–1% | OK |
| Cr | 18–21% | 18–21% | OK |
| Ni | — | — | — |
| Al | 1–1.8% | 1–1.8% | OK |
| Ti | 1.8–2.7% | 1.8–2.7% | OK |
| Co | 0–2% | 0–2% | OK |
| Fe | 0–3% | 0–3% | OK |
Mechanical properties
Solution Treated Aged
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 1000–1250 | MPa |
| Yield Strength | 620–800 | MPa |
| Elongation | ≥ 20 | % |
| Hardness HB | 250–350 | HB |
| Elastic Modulus | ≥ 222 | GPa |
| Density | ≥ 8.19 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| solution_treatment | 1050–1080 °C | air | 8 hours | — |
| aging | 690–710 °C | air | 16 hours | Gamma-prime precipitation |
Compatibility verdict
Nimonic 80A and Nimonic 80A / NiCr20TiAl: 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.
Haynes 230
2.4733Nickel-chromium-tungsten alloy — THE combustor can material for gas turbines. Outstanding oxidation resistance to 1149°C for prolonged exposure. Excellent long-term thermal stability (no sigma/mu phase after 16000h at 649-870°C). Lower thermal expansion than most high-temp alloys. Lanthanum addition improves oxide scale adherence. Used for gas turbine combustion cans, transition ducts, furnace retorts, and catalyst grids in nitric acid production.
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.