6063 Aluminum Alloy – Unveiling Every Single Aspect

6063 Aluminum Alloy – Insights on Properties and Uses

The importance of selecting the right alloy for the right application is paramount. 

Selecting the wrong alloy can lead you to face shorter life, poor efficiency and performance, low strength and much more.  In short, you can face frequent maintenance and repair expenses. To avoid experiencing such a scenario, you need to get highlights on every single property and practical application of each alloy. This will help you stay on the safe side and boost your ROI. The main purpose of this article is to offer information on every aspect of the 6063 aluminium alloy. These aspects include properties, applications, features, and comparisons with other alloys. Sounds curious? Let’s Uncover the facts!

6063 Aluminum Alloy – Overview

6063 alloy also refers to an architectural aluminium or medium-strength alloy with magnesium and silicon as principal alloying elements. Alloy 6063 also refers to t6 temper alloy that you can anodise and subject to architectural applications. 

6063 Aluminum Alloy

Besides, this alloy is commonly used for architectural elongations and to weld complex shapes. 6063 alloy is commonly referred to as 6000 series alloy. The melting temperature of this alloy lies in the range of 616 up to 654 degrees Celsius. 

Getting Familiar With Material Properties of 6063 Aluminum Alloy

Characteristics of 6063 / Mechanical Properties

Sr. No.Mechanical PropertiesValue (psi / mpa)
1Yield Strength21000 – 39000 / 145 – 269
2Modulus of elasticity10000 ksi / 68.9 Gpa
3Tensile Strength27000 – 42000 / 186 – 290 
4Fatigue Strength150 mpa
5Shear Modulus27 Mpa
6Ultimate Tensile Strength470 Mpa
7High Strength-to-Weight Ratio270 Mpa
8High Thermal Conductivity209 W/ m-k

Physical Properties of 6063 Alloy

Considering the physical properties of the 6063 alloy, they reveal that the alloy features high corrosion resistance, good machinability, good surface finish, etc. 

Sr. No.Physical PropertyValue
1Corrosion ResistanceHigh
2Surface FinishGood

Corrosion Resistance

The strength of the metal or alloy to resist the corrosive impact of weather or a humid environment refers to corrosion resistance. 6063 alloy resists the corrosive impact excellently.


6063 aluminium alloy properties allow it to cater to superior machinability. The aluminium association allow you to subject it to various shaping techniques. 


The thermal properties of the 6063 alloy make it highly weldable and heat-treatable. It results in smooth surfaces through welding and can be easily anodised. 

Heat Treatability

6063 T4 Vs. T6 Vs. T52 Vs. T832 Vs. T42

T4 variation features a lower level of yield and tensile strength, which makes it formable and ductile. The other variations, including the T6, T52, and T832, are harder and feature good corrosion resistance and formability. T6 is used for architectural applications, while other variations are popular for aluminium extrusion purposes. Heat treatment to all the variations induces excellent properties. 

Sr. No.Characteristic Parameters6063 – T46063-T66063 – T8326063 – T52
1Tensile strength (MPa)180210240150
2Yield strength (MPa)11513516095
3Elongation (%)28252030
8Corrosion resistanceHighHighHighHigh
9ApplicationsExtrusions, Sheet metal, Architectural extrusions, StructuralHigh-strength extrusions, StructuralExtrusions, Sheet metal,


6063 series of alloys are a good choice for extrusion. You can use this architectural alloy to manufacture custom shapes and sizes of products. 


The medium to high strength of the 6063 alloy makes it suitable for a variety of applications. You can temper its variations, including t832 or t5, to strengthen their properties. 

what is 6063 aluminum used for

Uncovering the Chemical Composition of 6063 Aluminum

6063 is a medium-strength alloy commonly referred to as an architectural or temper 6063. This is mainly because of the following major alloying elements:

Sr. No.6063 Aluminum Metal Elements (%)
2Mg0.45 to 0.9 
3Si0.2 to 0.6

Major Applications of 6063 Aluminum Alloy

The popular alloys used for 6063 aluminium are:

al 6063 applications

Comparing 6063 Aluminum With Others

6063 Vs. 6061

When it comes to strength, the 6063 is lower than the 6061, but the 6063 is more ductile and formable. See the table below for an in-detail comparison

Sr. No.Property6061 (T4, T6)6063 (T4, T6)
1Tensile strength (psi)29,000 up to 33,00021,000 up to 25,000
2Yield strength (psi)25,000 up to 28,00016,000 up to 22,000
3Elongation (%)18 up to 2525 up to 35
4Hardness65 up to 8550 up to 70
7ApplicationsAircraft, Automotive, MarineExtrusion, Architectural, Sheet Metal

6063 Vs. 5052

5052 variation features more excellent strength than 6063 and supports convenient formability and machinability. The characteristic’s parameters are:

Sr. No.Property5052 (H32, H34, H38)6063 (T4, T6)
1Tensile strength (psi)25,000 up to 32,00021,000 up to 25,000
2Yield strength (psi)16,000 up to 25,00016,000 up to 22,000
3Elongation (%)30 up to 4025 up to 35
4Hardness50 up to 6550 up to 70
7ApplicationsElectrical, Architectural, FoodExtrusion, Architectural, Sheet Metal

6063 Vs. 7075

7075 is not tensile because it features higher hardness and toughness. This is why you can use it in sports applications and aircraft manufacturing.

Sr. No.Property7075 (T4, T6, T73)6063 (T4, T6)
1Tensile strength (psi)88,000 up to 95,00021,000 up to 25,000
2Yield strength (psi)75,000 up to 85,00016,000 up to 22,000
3Elongation (%)10 up to 1425 up to 35
4Hardness130 up to 15050 up to 70
7ApplicationsAerospace, sports componentsExtrusion, Architectural, Sheet Metal

6063 Vs. 2024

The 2024 aluminium alloy is also stronger and tougher than the 6063. Further comparison details are in the table below:

Sr. No.Property2024 (T4, T6, T73)6063 (T4, T6)
1Tensile strength (psi)470 MPa21,000 up to 25,000
2Yield strength (psi)420 MPa16,000 up to 22,000
3Elongation (%)2225 up to 35
4HardnessHB 12050 up to 70
7ApplicationsAerospace, sports componentsExtrusion, Architectural, Sheet Metal



To make an informed decision, it is highly critical to pay attention to the properties and uses of the specific alloy. The properties of the alloys are what make them suitable for different applications. Higher weldability, heat treatability, and higher strength-to-weight ratio make 6063 alloy suitable for railings, door frames, conduit housings, etc. Want to make an informed decision on the choice of other metals? Dont forget to visit here!


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