ThePipingMart Blog Grades Aluminum 6205 Alloy (UNS A96205) – Composition, Properties and Uses

Aluminum 6205 Alloy (UNS A96205) – Composition, Properties and Uses

Aluminium 6205

Aluminium 6205 Alloy, also known as UNS A96205, is a popular aluminum alloy with unique properties. This high-strength material has excellent corrosion resistance and superb weldability, making it ideal for various applications. Its composition contains a good amount of silicon and magnesium, which work together to enhance strength and durability. In addition, the Alloy 6205 is known for its excellent machinability and good formability. Due to its exceptional properties, Aluminium 6205 Alloy is used in various industries, including automotive, aerospace, and industrial manufacturing. This guide will explore the uses, heat treatment, machining, welding, and corrosion resistance of UNS A96205.

What Forms of 6205 Aluminium is Available at Piping Mart?

  • 6205 Aluminium Bar
  • 6205 Aluminium Pipe
  • 6205 Aluminium Tubes
  • 6205 Aluminium Valves
  • 6205 Aluminium Washers
  • 6205 Aluminium  Flanges
  • 6205 Aluminium  Fasteners
  • 6205 Aluminium  Sheet Plates
  • 6205 Aluminium Pipe Fittings
  • 6205 Aluminium Forged Fittings

6205 Aluminium Composition

Element Content (%)
Aluminum, Al 98.4
Silicon, Si 0.80
Magnesium, Mg 0.50
Zinc, Zn 0.1
Manganese, Mn 0.1
Chromium, Cr 0.10

6205 Aluminium Physical Properties

Properties Metric Imperial
Density 2.71 g/cm³ 0.0979 lb/in³
Melting point 613 – 645 °C 1140 – 1190 °F

6205 Aluminium Mechanical Properties

Properties Metric Imperial
Tensile strength 260 MPa 37700 psi
Yield strength 140 MPa 20300 psi
Elongation at break 19% 19%
Elastic modulus 69 GPa 10000 ksi
Shear modulus 26 GPa 3770 ksi
Poisson’s ratio 0.33 0.33
Hardness, Brinell 65 65
Hardness, Knoop (converted from Brinell hardness value) 88 88
Hardness, Vickers (converted from Brinell hardness value) 75 75

6205 Aluminium Thermal Properties

Properties Conditions
T (°C) Treatment
Thermal conductivity 172 W/mK 25 T1

6205 Aluminium Uses

Aluminum 6205 is most commonly used for the production of structural components such as bridges and buildings due to its superior strength and corrosion resistance. It can also be used for automotive parts and components, such as pistons or engine casings. This alloy is also ideal for use in electrical equipment due to its non-magnetic properties and superior conductivity.

6205 Aluminium Uses in Industries

  • Construction Industry
  • Transportation Industry
  • Packaging Industry
  • Electrical and Electronics Industry
  • Aerospace Industry

6205 Aluminium Heat Resistance

Aluminum 6205 is highly resistant to extreme temperatures because it has a higher melting point than other alloys. This makes it an ideal material for use in industries that require high-temperature exposure, such as aerospace or automotive engineering. The alloy’s excellent thermal properties also make it suitable for applications where rapid cooling is necessary, such as injection moulding.

6205 Aluminium Machining

Aluminium 6205 can be easily machined using standard tools due to its softness and malleability. The cutting process is made easier by the fact that this alloy does not harden after being exposed to extreme temperatures, so it can be worked with at room temperature without the risk of cracking or warping. Despite its softness, aluminium 6205 is still considered a strong material thanks to its high tensile strength, making it suitable for use in many industrial applications.

6205 Aluminium Welding

Welding aluminium 6205 requires some special considerations compared to other alloys due to its low carbon content, which makes it more susceptible to cracking during welding operations if proper precautions are not taken. To ensure successful welds, preheating the material to 200°C (392°F) prior to welding will help prevent any cracking or warping from occurring during the process. It’s also important to note that when welding aluminum alloys like this one, you should avoid creating any large pools of molten metal since they will cool quickly and create weak points in the welded joint.

6205 Aluminium Corrosion Resistance

Aluminium 6205 has excellent corrosion resistance, which makes it an ideal choice for outdoor applications where exposure to moisture could cause rusting or degradation over time. This alloy’s ability to resist oxidation gives it improved durability compared with other metals, which may corrode over time when exposed to environmental factors like rain or snowfall. This alloy also offers superior heat transfer capabilities, making it an ideal choice for manufacturing products like radiators and cooling systems where efficient heat transfer is key.


With its combination of strength, malleability, corrosion resistance, heat resistance, machinability and weldability, aluminium 6205 is an incredibly versatile material with applications across multiple industries, including construction, aerospace and automotive engineering, amongst others! With proper care taken during handling and fabrication processes, this alloy can provide years of reliable service no matter what application you put it into! For website owners who want their products or services seen by more potential customers online – using SEO strategies on your site helps boost visibility – making sure your business has a wide reach within search engines such as Google!

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