GH4169 high temperature alloy physical properties and fatigue performance parameters
GH4169 high temperature alloy is a nickel-based high temperature alloy widely used in aviation, aerospace, energy and other high temperature fields. The alloy is known for its excellent physical properties and fatigue performance, and is suitable for manufacturing high temperature turbine engines, gas turbines and other key components working in high temperature environments. This article will introduce the physical properties and fatigue performance parameters of GH4169 high temperature alloy in detail for reference.
Physical performance parameters of GH4169 high temperature alloy
The physical properties of GH4169 high temperature alloy determine its stability and reliability in high temperature environments. The following are some key physical performance parameters of the alloy:
Density: The density of GH4169 alloy is 8.24 g/cm³. This high density material helps to improve the resistance of components to high temperature oxidation and corrosion.
Melting point: The melting point of GH4169 alloy ranges from 1260°C to 1340°C. This high melting point enables the alloy to maintain structural integrity and performance stability at extremely high temperatures.
Thermal Conductivity: At 20°C, the thermal conductivity of GH4169 alloy is 11.4 W/m·K. This moderate thermal conductivity helps to effectively dissipate heat under high temperature conditions and prevent overheating of components.
Specific Heat Capacity: At 20°C, the specific heat capacity of GH4169 alloy is 435 J/kg·K. A higher specific heat capacity means that the alloy can absorb more heat, which helps to relieve thermal stress.
Coefficient of Thermal Expansion: The thermal expansion coefficient of GH4169 alloy is 13.3 × 10⁻⁶ /°C (in the range of 20°C to 800°C). This parameter is very important for designing components with high thermal stability.
Electrical Resistivity: At 20°C, the resistivity of GH4169 alloy is 1.25 µΩ·m. This property makes the alloy have good electrical conductivity in high temperature environments.
Fatigue performance parameters of GH4169 high temperature alloy
GH4169 high temperature alloy not only has excellent physical properties at high temperatures, but also has excellent fatigue performance. This allows it to maintain reliable performance under high stress and high cyclic load conditions. The following are some key fatigue performance parameters of GH4169 alloy:
Tensile Strength: At room temperature, the tensile strength of GH4169 alloy is 1370 MPa. At 700°C, its tensile strength can still reach 1030 MPa. This shows that the alloy still maintains high strength under high temperature conditions.
Yield Strength: At room temperature, the yield strength of GH4169 alloy is 1240 MPa. At 700°C, its yield strength is 725 MPa. This high yield strength ensures that the material is not prone to plastic deformation under high stress.
Fatigue Strength: The fatigue strength of GH4169 alloy at 650°C is 620 MPa (107 cycles). This high fatigue strength enables long-term use in high temperature and high cyclic stress environments.
Fracture Toughness: The fracture toughness K_IC of GH4169 alloy is 88 MPa·m^0.5. This high toughness parameter indicates that the alloy has strong resistance to crack growth and fracture.
Creep Performance: Under the conditions of 650°C and 137 MPa, the creep rupture time of GH4169 alloy is more than 1000 hours. The excellent creep performance makes the alloy stable under long-term high temperature load.
