ThePipingMart Blog Grades Aluminium Alloy 2319 (UNS A92319) – Composition, Properties, and Uses

Aluminium Alloy 2319 (UNS A92319) – Composition, Properties, and Uses

Aluminium 2319

Aluminium 2319 is an aluminum-based alloy that has a wide range of uses in many industries. It has excellent machinability, good corrosion resistance, and high heat resistance. The composition of Aluminium 2319 makes it ideal for applications where strength and ductility are required. Let’s take a closer look at this versatile alloy and its properties.


Al 2319 is composed primarily of aluminium (91%), with the remainder made up of copper (2-4%), manganese (1-2%), magnesium (0.2-0.8%), nickel (0.6%), silicon (0.4%) and zinc (1%). This combination gives the alloy a high strength-to-weight ratio, making it ideal for use in aerospace, automotive, and other engineering applications where strength is paramount while maintaining a lightweight design profile.

Element Content (%)
Aluminum, Al 93
Copper, Cu 6.3
Manganese, Mn 0.3
Zinc, Zn 0.18
Titanium, Ti 0.15
Vanadium, Va 0.10

Chemical Properties

Grade 2319 has excellent chemical resistance due to its low carbon content, which helps prevent corrosion caused by exposure to chemicals such as acids or alkalis. Additionally, copper helps increase the alloy’s overall corrosion resistance, even when exposed to salt water or other harsh environments.

Mechanical Properties

The mechanical properties of alloy 2319 make it an ideal choice for various applications. Specifically, it offers good tensile strength and fatigue strength, outstanding formability and weldability characteristics. In addition, this alloy exhibits excellent ductility and resilience when subjected to shock loading or dynamic stresses—making it well-suited for parts that need to withstand high-stress levels without breaking down or failing prematurely.

Properties Metric Imperial
Poisson’s ratio 0.33 0.33
Elastic modulus 70-80 GPa 10152-11603 ksi

Physical Properties

2319 Aluminium is a high-strength alloy that features impressive corrosion and heat resistance. Its excellent physical properties make it ideal for use in various industrial applications. Key characteristics include outstanding mechanical strength and hardness, making it suitable for back-setting tools and inserts. Good fatigue properties also mean it can be used to machine aerospace components and automotive body reinforcements such as brackets, ribs and housings. Furthermore, Aluminium 2319 exhibits an outstanding machinability rating with excellent weldability for fusion welding processes such as Mig and TIG. In conclusion, these impressive physical properties make Aluminium 2319 a great choice of high-performance material in many industrial applications.

Properties Metric Imperial
Density 2.84 g/cm³ 0.102 lb/in³
Melting point 543 – 643 °C 1009-1189°F

Thermal Properties

Properties Conditions
T (°C) Treatment
Thermal conductivity 170 W/mK 25


  • AMS 4191D
  • AWS A5.10.92
  • ER 2319
  • R 2319


Aluminium 2319 is one of the most widely used materials when it comes to metal casting; its popularity comes from its versatility, durability and lightweight properties. From densely-packed city streets to remote mountain villages, aluminium 2319 can be found in various industries. It’s used as a structural element in vehicle parts, bridges and other construction projects; it also has applications in packaging materials, electronics and home appliances. Aluminium 2319 is a great choice for many consumer products requiring attention to detail and longevity thanks to its incredible strength-to-weight ratio and excellent corrosion resistance. It’s becoming increasingly popular among the engineering community due to its many promising properties – there truly is something remarkable about this metal alloy!

Corrosion Resistance

Aluminium 2319 is a type of aluminium alloy offering incredible corrosion resistance, making it an ideal choice for applications that require tough and reliable components. This heat-treatable alloy offers superb mechanical strength, workability and formability, which combine to make Aluminium 2319 a highly versatile material for the room-temperature forming of parts. With superior corrosion resistance, Aluminium 2319 can handle exposure to various natural elements and withstand high temperatures, making it extremely suitable for aerospace, marine and automotive engineering sectors.

Heat Resistance

Aluminium 2319 has impressive heat resistance properties in its untreated form and is often used for applications that rely on extreme temperature environments. It is well-known to retain its strength and resilience even when exposed to temperatures up to 315°C (599°F). With proper treatment, however, the heat-resisting capabilities of these alloys can be greatly increased, resulting in an ideal material choice for even more demanding applications. Its ductility and malleability make it particularly attractive when working with unique shapes or where tight part tolerances are a primary concern. Even when subjected to welding or machining, Aluminium 2319 retains its high strength during the stress placed upon it while remaining relatively lightweight.

Heat Treatment

Heat treatment of Aluminium 2319 is an important process for improved mechanical properties. The material can be hardened using a specific heating and cooling cycles to improve its toughness and fatigue strength levels. It also helps reduce weight while maintaining strength, which is why this alloy has become increasingly popular in aerospace and automotive industry applications. Beyond that, this heat treatment process provides superior weldability to other aluminium alloys, making Aluminium 2319 the perfect choice for aircraft components and larger structures that need to be joined together.


Aluminium 2319 machining is a process in which newly-minted aluminium pieces are cut, drilled and otherwise prepared for use. It’s a delicate procedure in which experienced machinists must take the utmost care to get accurate results. Each step of the process needs to be done perfectly in order to create the desired shape and dimensions with precision. The finished product is always worth the labour involved, with uniform parts that can then be used for a variety of purposes. From balancing propellers on small airplanes to food transportation equipment, Aluminium 2319 machining has become an indispensable part of modern manufacturing.


Welding aluminium 2319 is a challenging yet rewarding process. It requires an experienced welder and specialized metallurgical skills to ensure the highest quality weld and safe working conditions. Safety techniques must be followed precisely to create a successful 2319 weld, and equipment must be in excellent condition. Understanding base metals, filler metals, heat control, and proper joint design are key components to achieving a good weld. Although it can be intimidating for people with less experience, a successful aluminium 2319 weld can result in superior strength and an impressive finish. With professional tools and guidance from an experienced welding specialist, even the most challenging welds can be accomplished.


Aluminium 2319 is an incredibly versatile aluminium alloy that can be used in countless applications across many industries due to its excellent physical properties, such as corrosion resistance, heat resistance, machinability, and weldability. Its composition allows it to be strong yet lightweight– making it perfect for aerospace engineering projects and automotive parts that need both strong yet light enough to move quickly on their power source, like an engine or battery pack. As you can see from its various features mentioned above– Aluminium 2319 is worth considering if you’re looking for an aluminium alloy that’s highly reliable and cost-effective!

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