When choosing a suitable material for your project, it’s essential to consider the composition and properties of the materials available to you. One material that you may come across is AMS 5747. AMS 5747 is a high-temperature nickel alloy often used in aerospace and gas turbine applications. In this blog post, we’ll look at AMS 5747’s composition, physical and mechanical properties, uses, and heat treatment.
What is AMS 5747?
AMS 5747 is a specification for a specific type of alloy used in jet engine components. This high-performance alloy is made of nickel, chromium, and iron and is designed to withstand extreme temperatures and stress. AMS5747 is commonly used in the aerospace industry for its strength and durability.
What Form Is AMS 5747 Available at Piping Mart?
- Bar
- Nuts
- Bolts
- Washers
- Screws
- Fasteners
- Stud Bolts
- Sheet Plates
AMS 5747 Composition
AMS 5747 is a nickel-base alloy that contains significant amounts of chromium, cobalt, and molybdenum. Its exact composition can vary depending on the manufacturer, but typically it has around 57% nickel, 20% chromium, 13% cobalt, and 9% molybdenum. Other elements that may be present include titanium, aluminium, and tungsten. This alloy is designed to withstand high temperatures and has excellent corrosion resistance.
| Element | Min % | Max % |
|---|---|---|
| C | – | 0.08 |
| Mn | – | 1.00 |
| Si | – | 0.50 |
| S | – | 0.01 |
| Cr | 14.00 | 17.00 |
| Ni | 70.00 | – |
| Nb/Cb | 0.70 | 1.20 |
| Ti | 2.25 | 2.75 |
| Al | 0.40 | 1.00 |
| Fe | 5.00 | 9.00 |
| Co | – | 1.00 |
| Ta | – | 0.05 |
| Cu | – | 0.50 |
AMS 5747 Physical Properties
AMS 5747 has a density of approximately 8.4 g/cm3 and a melting point of around 1355°C (2471°F). The thermal expansion coefficient of this alloy is relatively low, which makes it less susceptible to thermal expansion and contraction. It also has a low coefficient of thermal conductivity, meaning it doesn’t conduct heat very well.
| Density (lb / cu. in.) | 0.298 | |||
| Specific Gravity | 8.25 | |||
| Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) | 0.103 | |||
| Electrical Resistivity (microhm-cm (at 68 Deg F)) | 731 | |||
| Melting Point (Deg F) | 2575 | |||
| Thermal Conductivity | 83 | |||
| Mean Coeff Thermal Expansion | 7 | |||
| Magnetic Permeability | 1 | |||
| Modulus of Elasticity Tension | 31 | |||
| Reduction of Area | 42 | |||
AMS 5747 Mechanical Properties
AMS 5747 has excellent mechanical properties, making it ideal for high-temperature and high-stress applications. Its tensile strength can range from 130,000 to 150,000 psi, while its yield strength is typically around 70,000 – 90,000 psi. This alloy has good fatigue strength and is resistant to stress corrosion cracking. It also maintains its properties at high temperatures, making it ideal for gas turbine and aerospace applications.
AMS 5747 Uses
AMS 5747 is often used in high-temperature applications, where its excellent mechanical and corrosion-resistant properties come to the fore. You’ll often find AMS 5747 in gas turbine components, such as combustion chambers, nozzles, and afterburners. It’s also used in aerospace applications, such as engine parts, exhaust systems, and rocket motors. Furthermore, it’s used in cryogenic applications to maintain its properties at shallow temperatures.
AMS 5747 Hardness
AMS 5747 has a hardness of around 35 – 55 HRC (Rockwell C scale). This hardness can be increased through a heat treatment, which involves heating the alloy to a specific temperature and then cooling it down. This process makes the alloy stronger and harder, making it more suitable for high-stress applications.
AMS 5747 Heat Treatment
Heat treatment is a necessary process for improving the properties of AMS 5747. Heat treatment involves heating the alloy to a specific temperature (around 870 – 1040°C) and cooling it down. This process can significantly improve the strength and hardness of the alloy, making it more suitable for high-temperature and high-stress applications. However, it’s important to note that the heat treatment process can also change the alloy’s microstructure, affecting its properties.
Conclusion
AMS 5747 material is a high-temperature nickel alloy with excellent mechanical and corrosion-resistant properties. Its composition, physical and mechanical properties, uses, and heat treatment makes it an ideal material for high-stress and high-temperature applications. By understanding the properties and capabilities of AMS 5747, you can make an informed decision about whether it’s a suitable material for your project.
Abhishek is a seasoned blogger and industry expert, sharing his insights and knowledge on various topics. With his research, Abhishek offers valuable insights and tips for professionals and enthusiasts. Follow him for expert advice on the latest trends and developments in the metal industry.
