ThePipingMart Blog Grades 2519 Aluminium Alloy – Composition, Properties, and Uses

2519 Aluminium Alloy – Composition, Properties, and Uses

Aluminium 2519

Aluminium 2519 is an aluminium alloy used in the aerospace and automotive industries. It is known for its excellent strength-to-weight ratio, corrosion resistance, and heat resistance. Its properties make it a great choice for many applications, such as aircraft parts and components, engine parts, vehicle bodies, and more. Let’s take a closer look at why aluminium 2519 is so popular.

Chemical Properties

Al 2519 has a composition of 97% aluminium, 3% copper, 0.3% manganese, 0.2% iron and silicon, and trace amounts of zinc. This composition gives it an excellent strength-to-weight ratio compared to other alloys in the same class. It also makes it resistant to corrosion, even in harsh environments like marine settings.

Aluminum, Al 91 – 94.4 % 91 – 94.4 % As remainder
Copper, Cu 5.3 – 6.4 % 5.3 – 6.4 %
Iron, Fe <= 0.30 % <= 0.30 %
Magnesium, Mg 0.05 – 0.40 % 0.05 – 0.40 %
Manganese, Mn 0.10 – 0.50 % 0.10 – 0.50 %
Other, each <= 0.05 % <= 0.05 %
Other, total <= 0.15 % <= 0.15 %
Si+Fe <= 0.40 % <= 0.40 %
Silicon, Si <= 0.25 % <= 0.25 %
Titanium, Ti 0.02 – 0.10 % 0.02 – 0.10 %
Vanadium, V 0.05 – 0.15 % 0.05 – 0.15 %
Zinc, Zn <= 0.10 % <= 0.10 %
Zirconium, Zr 0.10 – 0.25 % 0.10 – 0.25 %

Mechanical Properties

Grade 2519 has a tensile strength of 270 MPa (megapascals) and an elongation rating of 16%. This combination makes it strong while still being malleable enough to be worked with various machining operations or welding processes. Additionally, aluminium 2519 is resistant to fatigue, which makes it ideal for high-stress applications where repeated flexing can occur without compromising the integrity of the part or component.


Alloy 2519 has numerous uses in the aerospace and automotive industries due to its strength and resistance to fatigue and corrosion. This alloy is often used for structural components such as aircraft frames in the aerospace industry due to its superior stiffness-to-weight ratio compared to other alloys commonly used in this field. It’s also used for landing gear components due to its excellent fatigue resistance when subjected to repeated flexing during landings or takeoffs. In the automotive industry, this alloy is commonly used for suspension components and engine parts that need superior heat resistance characteristics, such as exhaust manifolds or turbochargers.

Physical properties

2519 Grade is a popular choice for applications that require great strength and durability. This aluminium type offers excellent corrosion and fatigue resistance in even the most challenging environments. It also has superior machinability, making it easy to shape, form and weld without compromising the strength or integrity of this remarkable material. Due to its unique composition, Aluminium 2519 has excellent mechanical properties with high tensile strength, good fatigue performance, and greater resistance to general wear. This material’s combination of flexibility with significant temperature range makes it a perfect choice for manufacturing aerospace components, industrial components and other products with demanding applications.

Corrosion resistance

Aluminium 2519 has long been praised for its superior corrosion resistance and has consequently become a popular choice when selecting metals for use in high-corrosion environments. Aluminium 2519 is capable of withstanding any chemical exposures it might face without any detrimental effect on the metal, meaning it can remain durable even in hostile external conditions. Valuable infrastructure such as bridges, storage tanks, and pressure vessels have all benefited from this exceptionally corrosion-resistant aluminium alloy. The vast applications of this metal are impressive, ranging from aerospace construction to chemical plant installations. Aluminium 2519 is a fantastic material that shows just how far humans have come with regard to creating durable materials for practical applications.

Heat resistance

Aluminium 2519 has earned a reputation for its extreme heat resistance. It performs exceedingly well even when exposed to temperatures up to 352°C (667°F). As such, this unique alloy is often used by industries that require high-heat performance from their materials, such as automotive engines and exhaust systems. Furthermore, the low-density composition of aluminium 2519 makes it extremely lightweight – a valuable trait in any situation where the ideal strength-to-weight ratio is an utmost priority. Aluminium 2519 is an excellent choice for industries seeking superior heat-resistant properties.

Heat treatment

Heat treatment of aluminium 2519 is a process that involves introducing specific temperatures to the material to produce desired mechanical properties. It is typically done by placing a heated aluminium 2519 specimen in an oven and then allowing it to cool slowly over time. The heating and cooling processes help to eliminate internal stresses and redistribute the material’s grain structure. This process has numerous benefits, such as increased strength, improved ductility, fatigue resistance, greater wear resistance, and improved surface finish. Heat-treating aluminium 2519 can also improve its electrical and thermal conductivity for better performance in specialized applications. Overall, it is a noteworthy method for improving the properties of aluminium alloys in various ways.


Aluminium 2519 machining is a complex and skilled process that requires precision and accuracy. First, the raw material of Aluminium 2519 is cut according to precise measurements. The cutting tool must be a high-speed steel bit or tungsten carbide to withstand the forces exerted on it. After trimming the material, holes may be drilled for fasteners, or detailed features may need to be machined into the metal. The machinist will use CNC mills or manual mills for more intricate designs. With experience and patience, Aluminium 2519 can be manipulated into precise components with perfect repeatability from one piece to the next.


Aluminium 2519 welding is becoming an increasingly popular option for those in the industrial welding trade. This special alloy is known for its high strength and excellent heat-treat response, making it ideal for creating strong welds with a wide range of applications. With the rise of automated machines and easier access to tools, aluminium 2519 welding is quickly becoming a sought-after skill among professional welders. It produces low shrinkage stresses, allowing welders to explore complex structures that cannot be achieved with traditional methodologies. Aluminium 2519 welding provides strength, durability, and performance that make it suitable for many projects which require welding expertise.


In conclusion, aluminium 2519 is an extremely versatile alloy that can be used in many different industries due to its unique combination of mechanical properties such as tensile strength and corrosion resistance, along with its superior heat treatment capabilities, making it ideal for high-temperature applications such as engine parts or turbochargers where conventional steel would not hold up under these conditions. Its lightweight yet strong composition also makes it ideal for use in aviation, where weight savings are important while still providing superior strength characteristics necessary for flight safety protocols. With all these benefits combined into one alloy, there is no wonder why aluminium 2519 is so widely utilized today!

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