Hastelloy X* Specification
*Trade name of
Haynes International
- W.NR 2.4665
- UNS N06002
- AWS 057
Applicable Standards:
- AMS 5798
- ASTM B619
Hastelloy X is a Nickel-Chromium-Iron-Molybdenum alloy with an exceptional combination of oxidation resistance, ease of fabrication and high temperature strength. It has also been found to be exceptionally resistant to stress corrosion cracking in petrochemical applications.
| Good Mechanical Properties at Elevated Temperatures | Yes |
| Corrosion Resistant at Ambient Temperatures | No |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | No |
| Oxidation Resistant | Yes |
| Precipitation Hardenable | No |
Applications include:
- Gas turbine engine
- Industrial furnace
- Chemical processing
- Petrochemical industry
| Approximate Chemical Composition | |
| Ni | 47% |
| Cr | 22% |
| Fe | 18% |
| Mo | 9% |
| Co | 1.5% |
| Properties | ||
| DENSITY | 8.22 g/cm3 | 0.297 lb/in3 |
| MELTING POINT | 1355oC | 2470oF |
| COEFFICIENT OF EXPANSION | 13.9 µm/m °C (20 - 100°C) |
7.7 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 77.6 kN/mm2 | 11255 ksi |
| MODULUS OF ELASTICITY | 205 kN/mm2 | 29733 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Temper | Stress relieve at 400 - 450oC (750 - 840oF) for 2 hours and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 850 - 1050 N/mm2 | 123 - 152 ksi | -200 to +400oC | -330 to +750oF |
| Spring Temper | 1350 - 1550 N/mm2 | 196 - 225 ksi | -200 to +400oC | -330 to +750oF |
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