Aluminium Alloy - Commercial Alloy - 6061

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Last Datasheet Revision

13 November 2018

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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.

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6061 - T6 Extrusions

Aluminium alloy 6061 is a medium to high strength heat-treatable alloy with a strength higher than 6005A. It has very good corrosion resistance and very good weldability although reduced strength in the weld zone. It has medium fatigue strength. It has good cold formability in the temper T4, but limited formability in T6 temper. Not suitable for very complex cross sections.

Applications
Alloy 6061 is typically used for heavy duty structures in:
~ Rail coaches
~ Truck frames
~ Ship building
~ Bridges and Military bridges
~ Aerospace applications including helicopter rotor skins
~ Tube
~ Pylons and Towers
~ Transport
~ Boilermaking
~ Motorboats
~ Rivets

Chemical Composition

Spec: BS EN 573-3:2009

Alloy 6061

Chemical Element	% Present
Manganese (Mn)	0.0 - 0.15
Iron (Fe)	0.0 - 0.70
Magnesium (Mg)	0.80 - 1.20
Silicon (Si)	0.40 - 0.80
Copper (Cu)	0.15 - 0.40
Zinc (Zn)	0.0 - 0.25
Titanium (Ti)	0.0 - 0.15
Chromium (Cr)	0.04 - 0.35
Other (Each)	0.0 - 0.05
Others (Total)	0.0 - 0.15
Aluminium (Al)	Balance

Properties

Physical Property	Value
Density	2.70 g/cm³
Melting Point	650 °C
Thermal Expansion	23.4 x10^-6 /K
Modulus of Elasticity	70 GPa
Thermal Conductivity	166 W/m.K
Electrical Resistivity	0.040 x10^-6 Ω .m

Spec: BS EN 755-2:2008

Extrusions - Up to 200mm Dia. & A/F, 5mm WT for Tube and Prof

Mechanical Property	Value
Proof Stress	240 Min MPa
Tensile Strength	260 Min MPa
Hardness Brinell	95 HB

Temper Types

The most common temper for 6061 aluminium is:

T6 - Solution heat treated and artificially aged

Supplied Forms

Alloy 6061 is typically supplied as

Extrusions

Weldability

Weldability – Gas: Good

Weldability – Arc: Very Good

Weldability – Resistance: Good

Brazability: Good

Solderability: Good

Fabrication

Workability – Cold: Good

Machinability: Acceptable

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