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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | UNS N06022 | N06022 | REF |
| 🇪🇺 | EN | Europe | NiCr21Mo14W | 2.4602 | 100% |
Sources: ASTM B575, DIN 17744
Chemical composition comparison (wt%)
Side-by-side: Hastelloy C-22 (ASTM) (ASTM B575) vs NiCr21Mo14W (EN)
| Element | Hastelloy C-22 (ASTM) | NiCr21Mo14W (EN) | Overlap |
|---|---|---|---|
| C | 0–0.01% | — | — |
| Si | 0–0.08% | — | — |
| Mn | 0–0.5% | — | — |
| Cr | 20–22.5% | — | — |
| Mo | 12.5–14.5% | — | — |
| Ni | ≥ 51% | — | — |
| V | 0–0.35% | — | — |
| W | 2.5–3.5% | — | — |
| Co | 0–2.5% | — | — |
| Fe | 2–6% | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 690 | MPa |
| Yield Strength | ≥ 310 | MPa |
| Elongation | ≥ 45 | % |
| Elastic Modulus | ≥ 206 | GPa |
| Density | ≥ 8.69 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| solution_treating | 1120–1175 °C | water | 10-30 min | Rapid quench required |
Compatibility verdict
Hastelloy C-22 and NiCr21Mo14W: 100% composition match
Close equivalents but NOT identical.
Related materials
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