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.
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/mºC | – | 14 | 14.4 | 14.8 | 15.5 | – | 16.4 | – | 16.9 |
| Thermal Conductivity /kcal/(hr.m.ºC) | – | 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 |