ThePipingMart Blog Grades Aluminum 7049 Alloy (UNS A97049) – Composition, Properties and Uses

Aluminum 7049 Alloy (UNS A97049) – Composition, Properties and Uses

Aluminium 7049

Aluminum 7049 Alloy, also known as UNS A97049 Aluminium, is a popular metal alloy for various applications. Aluminum 7049 is an alloy that combines zinc, magnesium, copper, and chromium. This alloy has an impressive composition, making it an excellent choice for use in aircraft and aerospace industries. One of the main benefits of 7049 aluminum is that it has exceptional corrosion resistance properties, making it ideal for outdoor use or in harsh environments. Additionally, it has high strength and is incredibly lightweight, which makes it a preferred material for manufacturing high-performance components. Compared to other aluminum alloys, Aluminum 7049 Alloy offers an unbeatable combination of strength, corrosion resistance, and weight savings. Let’s take a look at some of the unique benefits this alloy can provide.

What Forms of Aluminium 7049 is Available at Piping Mart?

  • Aluminium 7049 Bar
  • Aluminium 7049  Pipe
  • Aluminium 7049 Tubes
  • Aluminium 7049 Valves
  • Aluminium 7049 Washers
  • Aluminium 7049  Flanges
  • Aluminium 7049  Fasteners
  • Aluminium 7049  Sheet Plates
  • Aluminium 7049 Pipe Fittings
  • Aluminium 7049 Forged Fittings

7049 Alloy Composition

Element Content (%)
Aluminium / aluminum, Al 88.7
Zinc, Zn 7.6
Magnesium, Mg 2.5
Copper, Cu 1.5
Chromium, Cr 0.15

7049 Alloy Physical Properties

Properties Metric Imperial
Density 2.6-2.8 g/cm3 0.0939-0.1011 lb/in³

7049 Alloy Mechanical Properties

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

7049 Alloy Thermal Properties

Properties Conditions
Temp Treatment
Thermal conductivity 154 W/mK 25ºC/77ºF T73

7049 Alloy Uses

Aluminum 7049 is an excellent strength-to-weight ratio and corrosion resistance alloy, making it a great material for many applications. It is widely used in the aerospace and automotive industries due to its performance characteristics and heat treatability, allowing manufacturers to craft efficient parts with accurate dimensions. This metal alloy can also be found in marine instruments, food processing equipment, rods and bars for general engineering purposes, and bicycle frames. Aluminum 7049 is often employed as a cost-effective alternative to magnesium while offering enhanced durability without sacrificing performance. Its usability and ease of machinability will likely ensure its continued importance in the industry for a long time to come.

7049 Alloy Uses in Industries

  • Aerospace Industry
  • Automotive Industry
  • Defense Industry
  • Electronics Industry
  • Medical Industry

7049 Alloy Corrosion Resistance

Aluminium 7049 offers superior corrosion resistance compared to other alloys. In fact, its combination of zinc and magnesium helps protect against oxidation and other forms of corrosion in even the most demanding environments. This makes it an ideal choice for use in marine applications or any environment where exposure to moisture and salt water may be an issue.

7049 Alloy Heat Resistance

The combination of copper and chromium also makes aluminum 7049 resistant to high temperatures. This makes it suitable for use in applications that require exposure to extreme temperatures, such as automotive exhaust systems or aerospace components. It also means that the alloy can withstand temperatures up to 800F without significant degradation or loss of strength over time.

7049 Alloy Heat Treatment

In order to take full advantage of its properties, aluminum 7049 must undergo a heat treatment process known as precipitation hardening (or PH). During this process, the alloy is heated at a high temperature which causes certain elements within the metal to precipitate out and form new compounds on the surface. This results in improved strength as well as improved wear resistance which can help extend its life expectancy when used in high-stress applications.

7049 Alloy Machining & Welding

Aluminium 7049 is relatively easy to machine due to its low melting point and relatively soft nature compared to other metals such as steel or titanium alloys. It is also easier than other alloys when it comes to welding due to its higher ductility, which allows for better penetration during welding processes without causing any cracking or warping in the material itself. This feature makes aluminium 7049 ideal for many different types of fabrication projects where complex shapes need to be created quickly with minimal effort required on behalf of the machinist or welder using it.


Aluminium 7049 is an incredibly versatile alloy that offers numerous benefits compared to other materials on the market today, including superior corrosion resistance, heat resistance, machinability, and weldability, making it perfect for a variety of industries from aerospace components to electrical connectors and much more! With its ability to withstand even extreme temperatures while still maintaining strength over time, aluminium 7049 should definitely be considered for any application where maximum performance is required, regardless if it’s used for industrial purposes or everyday consumer products!

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