Alloy Wire International
Datasheet: Hastelloy˘ X
Hastelloy˘ X
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. Hastelloy X possesses exceptional strength and oxidation resistance up to 1200°C (2200°F), and has exceptional forming and welding characteristics. Some applications that Hastelloy X is recommended for includes gas turbine engines, combustor cans, spray bars and flame holders.
Hastelloy X is also known as Inconel HX, Nicrofer 4722 Co, and Pyromet 680.
Available in all profile options
Key Features
Hastelloy X offers the following key features:
Exceptional oxidation resistance.
Highly resistant to stress corrosion cracking in petrochemical applications.
Typical Applications
Hastelloy X is known to be suitable for the following applications:
Gas turbine engines
Industrial furnaces
Chemical processing
Petrochemical industry
Designations
W.NR 2.4665
UNS N06002
AWS 057
Specifications
AMS 5754
AMS 5798
ASTM B619
GE B50A463
GE B50A655
ISO 15156-3 (NACE MR 0175)
Chemical Composition
The chemical composition of Hastelloy X is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| Cr | 20.50 | 23.00 |
| Mo | 8.00 | 10.00 |
| Fe | 17.00 | 20.00 |
| W | 0.20 | 1.00 |
| C | 0.05 | 0.15 |
| Si | – | 1.00 |
| Co | 0.50 | 2.50 |
| Mn | – | 1.00 |
| P | – | 0.04 |
| S | – | 0.03 |
| B | – | 0.01 |
| Ni | bal |
Alloy Details
Hastelloy X density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.22 g/cm³ | 1355 °C | 13.9 μm/m °C (20 – 100 °C) | 77.6 kN/mm² | 205 kN/mm² |
| 0.297 lb/in³ | 2470 °F | 7.7 x 10-6 in/in °F (70 – 212 °F) | 11255 ksi | 29733 ksi |
Heat treatment of finished parts
The typical heat treatment of Hastelloy X:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 400 – 450 °C (750 – 840 °F) | 2 Hr | Air |
Properties
The typical mechanical properties of Hastelloy X:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <1050 N/mm² | <152 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 1350 – 1550 N/mm² | 196 – 225 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Haynes International
