Incoloy 925
Incoloy 925 (N08925) alloy is a nickel base alloy containing molybdenum and copper with excellent hot and cold work properties. Precipitation hardening, creep resistant steel. The alloy has high yield strength and tensile strength below 650°C, good oxidation resistance below 760°C, and is stable for long-term use.
Content
Chemical composition of Incoloy 925(%)
| Element | Minimum(%) | Maximum(%) |
|---|---|---|
| Ni | 42 | 46 |
| Cr | 19.5 | 23.5 |
| Fe | remiander | remiander |
| Mo | 2.5 | 3.5 |
| Cu | 1.5 | 3 |
| Ti | 1.9 | 2.4 |
| Al | 0.15 | 0.5 |
| Mn | - | 0.5 |
| Si | - | 0.5 |
| C | - | 0.03 |
| S | - | 0.03 |
| P | - | 0.03 |
Physical properties of Incoloy 925
| Value | Property |
|---|---|
| Density | 8.14 g/cm3 |
| Melting range | 1343-1377℃ |
| Thermal conductivity | 11.1 W/m•K（at 100℃) |
| Specific heat capacity | 460 J/kg·K (at 20℃) |
| Electrical Resistivity | 1.22μΩ•m |
Mechanical properties of Incoloy 925 alloy
| Value | Property |
|---|---|
| Tensile Strength | 860 MPa |
| Yield Strength (0.2% Offset) | 580 MPa |
| Elongation | 25% |
| Hardness（HB） | 80 |
Applications of Incoloy925
Incoloy925 is a nickel-based alloy known for its excellent combination of high strength, corrosion resistance, and durability under severe service conditions. These unique characteristics make it stand out compared to other materials. Here are some key applications of Incoloy925, emphasizing its distinct features:
1. Oil and Gas Industry
- Downhole and Surface Gas Well Components: Incoloy925 is highly resistant to sulfide stress cracking and general corrosion in sour gas environments. This makes it ideal for use in downhole and surface gas well components, such as tubing, valves, hangers, and packers.
- Completion Equipment: The alloy’s strength and resistance to both high pressure and corrosive environments ensure the reliability and longevity of completion equipment.
2. Chemical Processing
- Heat Exchangers and Valves: The superior resistance to oxidation and general corrosion makes Incoloy925 suitable for heat exchangers and valves in chemical processing industries. It can withstand various corrosive chemicals, enhancing the equipment’s life span.
- Fasteners and Springs: In environments with high temperatures and corrosive conditions, Incoloy925’s mechanical properties ensure that fasteners and springs maintain their integrity and functionality.
3. Marine Applications
- Marine Fasteners and Fittings: Incoloy925 exhibits excellent resistance to seawater and marine environments, making it ideal for marine fasteners, fittings, and other critical components that require both strength and corrosion resistance.
- Pumps and Propeller Shafts: The alloy’s durability in saltwater and brine solutions ensures that pumps and propeller shafts operate efficiently without frequent replacements.
4. Aerospace Industry
- Engine Components: The high strength and oxidation resistance of Incoloy925 make it suitable for engine components that are exposed to high temperatures and oxidative environments.
- Structural Applications: The alloy’s excellent mechanical properties and resistance to stress-corrosion cracking contribute to its use in various structural applications within the aerospace sector.
5. Power Generation
- Nuclear Power Plants: Incoloy925’s resistance to high temperatures, radiation, and corrosive environments makes it an excellent choice for components in nuclear power plants, including reactor core components and steam generators.
- Turbine Blades: The alloy’s ability to maintain high strength and resist oxidation at elevated temperatures ensures the reliability of turbine blades in power generation.
