6106 Overview

6106 is a medium strength, general purpose, architecturally pleasing, heat treatable alloy with good corrosion resistance and very good weldability. 6106 is typically ordered as temper T6 for general purpose applications though temper T4 is particularly good for cold forming followed by natural ageing.

Common Applications

6106 can be extruded to complex shapes applicable to a range of industrial and commercial applications where superior surface finish is important. It is commonly used for light structural applications, ladders, marine, automotive, light to medium transport componentry and commercial applications.


6106 has excellent weldability by all standard methods including GMAW (MIG) and GTAW (TIG). Filler alloy 4043 is the primary filler though 5356 wire is the suggested alternative.


Machinability or 6106 is fair to good.

Similar Products

Alloys 6060 and 6063 can be substituted for 6106 providing a lower mechanical solution whereas 6005A is a slightly harder solution. Alloys 6060 / 6063 / 6005A all have aesthetically attractive surface finishes suitable for substitution with 6106.

Chemical Composition Specification (%) Single values are maxima except as noted

Alloy Si Fe Cu Mn Mg Cr Zn Ti Other
Each Total
6060 0.3-0.6 0.1-0.3 0.10 0.10 0.35-0.6 0.05 0.15 0.10 0.05 0.15
6063 0.2-0.6 0.35 0.10 0.10 0.45-0.9 0.10 0.10 0.10 0.05 0.15
6106 0.3-0.6 0.35 0.25 0.05-0.2 0.40-0.8 0.20 0.10 0.05 0.10
6005A 0.5-0.9 0.35 0.30 0.50 0.40-0.7 0.30 0.20 0.10 0.05 0.15

Mechanical Property Specification – Single values are maxima except as noted

Alloy and Temper Thickness mm Tensile Strength Elongation (% min in 50mm)
Over Up to Ultimate Yield
Min Max Min Max
6060 T5 <12mm 150 110 8
6063 T5 <12mm 150 110 8
6063 T6 <25mm 205 170 8
6106 T4 <150mm 130 70 12
6106 T6 <10mm 235 210 8
6106 T6 >10mm <25mm 205 170 8
6005A T5 All Thicknesses 260 240 8

Standards Referenced

AS/NZS 1866:1997 Reconfirmed 2020 – Aluminium and aluminium alloys – Extruded rod, bar, solid and hollow shapes AS/NZS 1665:2004 – Welding of aluminium structures

AAC (Australian Aluminium Council) publication – “Aluminium Standards Data and Design, Wrought products”.

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