ThePipingMart Blog Grades Aluminium 6063A Alloy – Composition, Properties and Uses

Aluminium 6063A Alloy – Composition, Properties and Uses

Aluminium 6063A

Aluminium 6063A is an alloy of aluminum, magnesium, and silicon. It is highly durable, heat-resistant, corrosion-resistant, and machinable. This makes it perfect for a variety of applications, including automotive parts, aircraft components, architectural structures, and more. In this blog post, we’ll take a closer look at the uses of aluminum 6063A as well as its corrosion resistance, heat resistance, heat treatment requirements, machinability, and welding capability.

6063A Alloy Composition

Element 6063 % Present 6063A % Present
Si 0.2 to 0.6 0.3 to 0.6
Fe 0.0 to 0.35 0.15 to 0.35
Cu 0.0 to 0.1 0.1
Mn 0.0 to 0.1 0.15
Mg 0.45 to 0.9 0.6 to 0.9
Zn 0.0 to 0.1 0.0 to 0.15
Ti 0.0 to 0.1 0.1
Cr 0.1 max 0.05
Al Balance Balance

6063A Alloy Mechanical Properties

BS EN 755-2:2008
Rod and Bar
Up to 150mm Dia. & A/F
Property Value
Proof Stress 90 Min MPa
Tensile Strength 150 Min MPa
Elongation A50 mm 10 Min %
Hardness Brinell 50 HB
Elongation A 12 Min %

6063A Alloy Physical Properties

Property Value
Density 2700 kg/m3
Melting Point 600°C
Modulus of Elasticity 69.5 GPa
Electrical Resistivity 0.35 x 10-6 Ω.m
Thermal Conductivity 200 W/m.K
Thermal Expansion 23.5 x 10-6/K

6063A Alloy Equivalent

  • AA6063
  • Al Mg0.7Si
  • GS10
  • AlMgSi0.5
  • A-GS
  • 3.32206
  • ASTM B210
  • ASTM B221
  • ASTM B241 (Pipe- Seamless)
  • ASTM B345 (Pipe- Seamless)
  • ASTM B361
  • ASTM B429
  • ASTM B483
  • ASTM B491
  • MIL G-18014
  • MIL G-18015
  • MIL P-25995
  • MIL W-85
  • QQ A-200/9
  • SAE J454
  • UNS A96063
  • HE19

6063A Alloy Uses

Aluminum 6063A has a number of uses due to its high durability and machinability. Common applications include automotive parts such as wheels and frames; aircraft components such as wings and fuselages; architectural structures like windows and doors; industrial machinery; electronic components; medical devices; heat sinks; radiators; water tanks; furniture parts; kitchenware; decorative items; motorcycle frames and body panels.

Corrosion Resistance

Aluminium 6063A also has excellent corrosion resistance properties, making it ideal for use in outdoor environments with high exposure to weathering elements. Its natural oxide layer provides good protection against rust formation by preventing oxygen from reaching the underlying metal surface. Additionally, its low carbon content minimizes the risk of galvanic corrosion when exposed to metals such as zinc or copper.

Heat Resistance

Aluminium 6063A is also highly heat resistant, making it suitable for high-temperature applications such as engine blocks or exhaust systems in automobiles. It can withstand temperatures up to 400°C (752°F) without losing strength or becoming brittle over time. This makes it an ideal material for components that will be exposed to extreme temperatures during operation.

Heat Treatment

Unlike other types of aluminium alloys, which require heat treatment prior to being used in manufacturing processes, Aluminium 6060A does not require any special treatment before being used in production processes such as forging or extrusion. This reduces costs associated with the labour involved with pre-treating materials before they can be used in production lines. Additionally, this material does not need any post-treatment once it has been formed into the desired shape or size, making it ideal for cost-effective manufacturing processes.


Machining aluminium6063A is relatively straightforward thanks to its softness which allows for easy cutting using conventional tools such as saw blades or drills without requiring specialized equipment like diamond-tipped drill bits, which are necessary for harder metals like steel or titanium alloys. Additionally, its low melting point means that chips created during the machining process can be quickly removed by simply melting them away rather than having to manually clean them up after each job is complete saving time and labour costs associated with post-processing activities normally required when working with hard metals like stainless steel or titanium alloys.


Welding aluminium6063A is also relatively straightforward compared to other types of metal alloys due to its lower melting point, which allows welders to work quickly without having to worry about overheating their equipment or damaging the material itself during the welding process. Furthermore, this material also produces less smoke compared to other metals, so welders don’t have to worry about breathing in harmful fumes while working on projects involving aluminium6063A either making it an ideal choice for welders looking for a safe yet effective metal alloy option when completing their projects!


Aluminium 6063A is an incredibly versatile metal alloy thanks to its excellent durability, corrosion resistance properties and machinability making it perfect for a wide range of applications, including automotive parts, aircraft components, architectural structures and more! Furthermore, thanks to its low melting point, it’s relatively easy to machine and weld, meaning that labour costs associated with pre-and post-processing activities are significantly reduced when working with this particular alloy compared to other types of metal alloys! All in all, aluminium 6062 is a great option for any one who needs an extremely durable yet cost-effective metal alloy choice for their projects!

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