Haynes 25 Cobalt Based Alloy
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Cobalt-nickel-chromium-tungsten alloy
- 5759
Haynes 25 Cobalt Based Alloy
Physical and Mechanical Properties
Density
9.13g/cm³
Melting point
1330-1410°C
Tensile strength
960MPa
Yield strength
340MPa
Elongation at break
35%
Product Form and Standard Specification
Bar
AMS5759
Plate
AMS5537
Strip
AMS5537
Wire
AMS5796
Forging
AMS5759
Haynes 25 (L605) is a cobalt-nickel-chromium-tungsten alloy renowned for its high-temperature strength, oxidation resistance, and wear resistance. It finds extensive applications in aerospace, medical, energy, and other demanding sectors, serving as a vital material in the production of engine components and artificial joints.
Features- Excellent high-temperature strength: Maintains structural integrity and mechanical performance under extreme heat.
- Oxidation resistance at 1800°F (980°C): Ideal for components exposed to continuous high-temperature oxidation.
- Wear resistance: Suitable for high-friction environments where material degradation must be minimized.
- Seawater resistance: Performs reliably in marine environments, resisting corrosion caused by prolonged seawater exposure.
- Aerospace industry: Used in gas turbine combustion chambers, jet engine parts, and combustion liners where high strength and oxidation resistance are essential.
- Industrial furnaces: Ideal for mufflers, bushings, and linings in high-temperature kilns and furnace systems.
- Chemical equipment: Applied in reactors and pipeline systems that demand resistance to high-temperature corrosion.
- Marine industry: Suitable for marine turbines and other ocean-exposed components requiring long-term corrosion resistance.
Chemical compositions
| Element | Min. % | Max. % |
| Fe | - | 3 |
| C | 0.05 | 0.15 |
| Si | - | 0.4 |
| Mn | 1 | 2 |
| P | - | 0.04 |
| S | - | 0.03 |
| Cr | 19 | 21 |
| Co | 9 | 11 |
| Ni | Bal | |
| W | 14 | 16 |
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