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Data Sheets

Aluminium Alloy

Commercial Alloy

6106 - T6 Extrusions

Aluminium alloy 6106 is an extrusion alloy designed to provide optimum combination of mechanical properties, complexity of shape, minimum section thickness and good surface finish together with the good resistance, weldability and formability associated with the 6000 series alloys. Very complex shapes are possible which are not obtainable with stronger alloys such as 6182.
(6000 series alloys achieve their properties by thermal treatment which can be adjusted to provide combinations of strength and formability conditions with good corrosion resistance and weldability. Because the properties are obtained by thermal treatment, fusion welding reduces the non-welded properties by up to 50%.)

Alloy 6106 is typically used for:
~ Structural applications
~ Ladders, pylons and towers
~ Railway Rolling Stock
~ Marine applications
~ Automotive structures

Chemical Composition

BS EN 573-3:2009
Alloy 6106
Chemical Element % Present
Manganese (Mn) 0.05 - 0.20
Iron (Fe) 0.0 - 0.35
Magnesium (Mg) 0.40 - 0.80
Silicon (Si) 0.30 - 0.60
Zinc (Zn) 0.0 - 0.10
Titanium (Ti) 0.0 - 0.10
Chromium (Cr) 0.0 - 0.20
Copper (Cu) 0.0 - 0.25
Other (Each) 0.0 - 0.05
Others (Total) 0.0 - 0.15
Aluminium (Al) Balance

Alloy Designations



Generic Physical Properties

Physical Property Value
Density 2.70 g/cm³
Melting Point 655 °C
Thermal Expansion 23.4 x10^-6 /K
Modulus of Elasticity 69.5 GPa
Thermal Conductivity 192 W/m.K
Electrical Resistivity 0.035 x10^-6 Ω .m

Mechanical Properties

BS EN 755-2:2008
Profiles only - Up to 10mm Wall Thickness
Mechanical Property Value
Proof Stress 200 Min MPa
Tensile Strength 250 Min MPa
Elongation A50 mm 6 Min %
Hardness Brinell 75 HB
Elongation A 8 Min %


Weldability – Gas: Good

Weldability – Arc: Very Good

Weldability – Resistance: Good

Brazability: Good

Solderability: Good






Workability – Cold: Acceptable, but limited in T6 temper

Machinability: Good



This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources.

Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied.

Advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. All transactions are subject to the Company’s current Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.