AMS4343 is a popular aerospace alloy widely used in the aerospace and aviation industries. It is a high-strength aluminium alloy known for its excellent mechanical and physical properties. This alloy is widely used in constructing aircraft parts, particularly in manufacturing gears and other transmission components. In this blog post, we will discuss the composition, properties, uses, and heat treatment of AMS 4343.
What is AMS 4343?
AMS 4343 (also known as 7049 Aluminum Alloy) is an aluminum bronze designed explicitly for use in seawater environments. This alloy has a high corrosion resistance and excellent resistance to stress corrosion cracking. It is known for its high strength and durability, making it a popular choice for marine applications, such as propellers, offshore drilling equipment, and ship fittings. AMS4343 is also used in other industries, such as aerospace, where its superior properties make it suitable for components in harsh environments. Overall, AMS4343 is a versatile material highly valued for its strength, resilience, and resistance to corrosion.
AMS 4343 Composition
AMS 4343 is an aluminium-copper alloy containing copper, magnesium, and silicon as alloying elements. The percentage of these elements varies, depending on the manufacturer and the intended application. Generally, it can have a copper content of 2.50% – 3.45%, magnesium content of 0.40% to 0.70%, and silicon content of 0.20% to 0.50%.
| Element | Content (%) |
|---|---|
| Aluminium / aluminum, Al | 88.7 |
| Zinc, Zn | 7.6 |
| Magnesium, Mg | 2.5 |
| Copper, Cu | 1.5 |
| Chromium, Cr | 0.15 |
AMS 4343 Physical Properties
AMS 4343 is known for its excellent physical properties. It has a high melting point of 640°C, a density of 2.78 g/cm³, and a thermal conductivity of 156 W/m-K. Additionally, it has low electrical conductivity and good resistance to corrosion and fatigue.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 2.6-2.8 g/cm3 | 0.0939-0.1011 lb/in³ |
AMS 4343 Mechanical Properties
AMS 4343 has excellent mechanical properties, making it ideal for the aerospace and aviation industries. It has a tensile strength of 620 – 690 MPa, yield strength of 500 – 580 MPa, and an elongation of 5 – 8%. It is also known for its high fatigue strength, making it suitable for use in gears and transmission components.
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 70-80 Gpa | 10152-11603 ksi |
| Poisson’s ratio | 0.33 | 0.33 |
AMS 4343 Uses
AMS 4343 is widely used in the aerospace and aviation industries. It is commonly used to manufacture gears, bearings, and other transmission components. It is also used to construct aircraft frames, landing gear parts, and other structural elements. Additionally, it is used to build high-performance sports equipment, such as bicycles and racing cars.
AMS 4343 Hardness
AMS 4343 has a hardness of 165 – 175 Brinell. This hardness level makes it ideal for use in high-stress applications, which are subject to wear and tear.
AMS 4343 Heat Treatment
AMS 4343 can be heat treated to improve its mechanical properties. It can be solution treated at 535°C for 2 hours, followed by quenching in water. This treatment results in improved strength and flexibility. Additionally, it can be aged at 160°C for 24 hours, enhancing its mechanical properties.
Conclusion:
AMS 4343 material is a high-strength aluminium alloy widely used in the aerospace and aviation industries. It is known for its excellent mechanical and physical properties, ideal for high-stress applications. It has a variety of uses, from the construction of gears and transmission components to the manufacture of aircraft frames and landing gear parts. Additionally, it can be heat treated to improve its mechanical properties, making it suitable for use in even more demanding applications. In summary, AMS 4343 is a crucial alloy in the aerospace and aviation industries.
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