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Haynes 25(Alloy L605) Chemical Composition
| % | Cr | Ni | Co | W | C | Fe | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 19 | 9 | – | 14 | 0.05 | – | 1 | – | – | – |
| Max | 21 | 11 | Balance | 16 | 0.15 | 3 | 2 | 0.4 | 0.04 | 0.03 |
Haynes 25(Alloy L605)Physical Properties
| Density | Melting range |
|---|---|
| 9.13 g/cm³ | 1329-1410°C |
Haynes 25(Alloy L605)Mechanical Properties
| Mechanical & Physical Properties | 21°C | 427°C | 538°C | 649°C | 760°C | 816°C | 871°C | 927°C | 982°C |
|---|---|---|---|---|---|---|---|---|---|
| Coefficient of Thermal Expansion µm/m⁰C | – | 14 | 14.4 | 14.8 | 15.5 | – | 16.4 | – | 16.9 |
| Thermal Conductivity /kcal/(hr.m.°C) | – | 14.9 | 16.7 | 18.6 | 20.4 | – | 22.6 | – | 24.8 |
| Modulus of Elasticity/ x105 MPa | 2.28 | 1.93 | 1.86 | 1.79 | 1.65 | – | 1.59 | – | 1.45 |
| Ultimate Tensile Strength /Mpa | 1006.6 | – | – | 744.6 | 641.2 | – | 413.7 | – | 234.4 |
| 0.2% Yield Strength /MPa | 475.7 | – | – | 331 | 282.7 | – | 248.2 | – | 124.1 |
| Elongation/ % | 51 | – | – | 60 | 42 | – | 45 | – | 32 |
| 100 hr Rupture Strength/ Mpa | – | – | – | 475.7 | 248.2 | 172.4 | 124.1 | 82.7 | 48.3 |
| 1000 hr Rupture Strength/ Mpa | – | – | – | 393 | 179.3 | 124.1 | 82.7 | 48.3 | 27.6 |
Features:
- Excellent High-Temperature Strength: Haynes 25 (also known as Alloy L605) is a cobalt-nickel-chromium-tungsten alloy that maintains significant strength at elevated temperatures, making it suitable for prolonged use in high-temperature environments.
- Superior Oxidation Resistance: The alloy exhibits outstanding resistance to oxidizing environments up to 1800°F (980°C), ensuring durability in high-temperature applications.
- Good Sulfidation Resistance: Haynes 25 offers excellent resistance to sulfidation, making it suitable for environments where sulfur compounds are present.
- Fabricability: The alloy can be readily fabricated and formed using conventional techniques, facilitating its use in various industrial applications.
Applications:
- Downhole Tools: In the oil and gas extraction industry, Haynes 25 alloy is utilized in the manufacturing of downhole tools that can withstand the extreme conditions encountered during drilling and extraction processes.
- Gas Turbines: The alloy is employed in gas turbine components, including combustion chambers and afterburners, due to its ability to maintain strength and resist oxidation at elevated temperatures.
- Aerospace Components: Haynes 25 alloy is used in aerospace applications where high-temperature strength and oxidation resistance are critical.
- Medical Devices: Its biocompatibility makes it suitable for medical implants and devices.
