In the world of metallurgy, AMS 5550 is a name often referenced in manufacturing industrial parts. AMS stands for Aerospace Material Specification and is a set of standards that outlines the material requirements for aerospace applications. As a titanium alloy, AMS 5550 is highly sought after for the mechanical and physical properties that make it ideal for use in a wide range of applications. In this blog post, we will explore the composition, properties, and uses of AMS 5550.
What is AMS 5550?
AMS 5550 (also known as 702 Inconel Alloy) is a bar and wire specification produced in vacuum-melted alloys. It’s widely used by the aerospace industry, providing superior mechanical properties and high purity due to the advanced production process employed. Its excellent tensile strength, toughness, and fatigue resistance make it highly sought after for many demanding applications.
AMS 5550 Composition
AMS 5550 is a titanium alloy that contains a blend of titanium, aluminium, vanadium, and iron. The percentage composition of these materials is carefully balanced to achieve the desired mechanical and thermal properties. Specifically, the alloy contains 6% aluminium, 4% vanadium, 0.13% maximum oxygen content, and 0.13% maximum iron content. Due to this composition, AMS 5550 has high strength, toughness, and corrosion resistance.
|Aluminum, Al||2.75- .75|
|Iron, Fe||2 max|
|Manganese, Mn||0.7 max|
|Copper, Cu||0.5 max|
|Titanium||0.25 – 1|
|Carbon, C||0.1 max|
AMS 5550 Physical Properties
AMS 5550 has exceptional physical properties that make it a highly sought-after alloy. It has a density of 4.74 grams per cubic centimetre, which is relatively low compared to other high-strength metals. The alloy has a melting point of 1620 degrees Celsius and a boiling point of 3287 degrees Celsius. Additionally, AMS 5550 has excellent creep resistance, which enables it to maintain its shape under high temperatures and pressures.
AMS 5550 Mechanical Properties
AMS 5550 has exceptional mechanical properties, making it an ideal choice for various applications. It is a high-strength alloy with a tensile strength of up to 1100 MPa and yield strength of up to 1000 MPa. In addition to its impressive tensile and yield strength, it has good fatigue resistance, making it an excellent choice for parts subjected to cyclic loading. AMS 5550 also has good flexibility, which enables it to be shaped and formed into various complex geometries.
AMS 5550 Uses
Due to its exceptional properties, AMS 5550 is used in various applications. These applications include engine components such as compressor and turbine blades, exhaust ducts, and inlet guide vanes. It also manufactures landing gear components, fasteners, and aircraft airframes. In addition, AMS 5550 is used in various industrial applications such as chemical processing and power generation.
AMS 5550 Hardness
AMS 5550 has excellent hardness properties, making it ideal for use in high-stress environments. Its Rockwell hardness ranges between 42 and 50, depending on the specific heat treatment used. Additionally, it has excellent wear resistance, which makes it an excellent choice for applications that require high abrasion resistance.
AMS 5550 Heat Treatment
The heat treatment process plays a crucial role in determining the properties of AMS 5550. The alloy can be heat treated to achieve a wide range of mechanical and physical properties. The most common heat treatment process is annealing, which involves heating the alloy to a high temperature and cooling it slowly. This process results in improved ductility and toughness. Another common heat treatment process is quenching and tempering, which involves heating the alloy to a high temperature and then rapidly cooling it in water or oil. This process results in improved hardness and strength.
As we have seen, AMS 5550 is a highly sought-after titanium alloy with exceptional mechanical and physical properties. Its unique composition gives it high strength, toughness, and corrosion resistance. It finds applications in various industries, such as aerospace, power generation, and chemical processing. It is hardness and excellent wear resistance makes it an ideal choice for high-abrasion applications. Ultimately, AMS 5550 is a versatile alloy that is highly sought-after for its superior properties and numerous applications.
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