AA 6061-T6511 Aluminum Alloy: Standards, Properties & Applications

AA 6061 is a readily available alloy that has good surface finish and ability to be anodized.Easy of weldability and brazability with nice surface finish. Resistance to corrosion from seawater and atmospheric conditions. Suitable for hot forging.

Properties

General

Property	Value	Condition	Related Standards
Density	2.7 g/cm³	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	69.0 GPa	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 6000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 6000 Series Aluminium
Shear modulus	26.0 - 26.5 GPa			Typical for Wrought 6000 Series Aluminium
Tensile strength	260.0 MPa	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.36e-05 1/K	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
	100 °C	2.36e-05 1/K	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Melting point		580.0 - 650.0 °C	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Specific heat capacity		887.0 - 963.0 J/(kg·K)			Typical for Wrought 6000 Series Aluminium
Thermal conductivity		155.0 - 180.0 W/(m·K)	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	23000000.0 - 27000000.0 S/m	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Electrical resistivity	3.7e-08 - 4.35e-08 Ω·m	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345

Chemical properties

Property	Value	Condition	Related Standards
Chromium	0.04 - 0.35 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Copper	0.15 - 0.4 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Iron	0.70 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Magnesium	0.8 - 1.2 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Manganese	0.15 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Silicon	0.4 - 0.8 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Titanium	0.15 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345
Zinc	0.25 %	T6511	AA Standards, ASTM B221, ASTM B241, ASTM B345

Technological properties

Property
Brazing	general: possible with commercial processes and methods
Corrosion properties	Stress corrosion cracking: no damage during operation and laboratory tests (O, T6, T651, T652, T6510, T6511), no damage during operation, limited damage during laboratory tests (T4, T451, T4510, T4511), general: good, without protection in industrial or seawater atmosphere
General machinability	General: poor (O), sufficient (T4, T451, T4510, T4511, T6, T651, T652, T6510, T6511)
Workability	general (condition): good (O), acceptable (T4, T451, T4510, T4511), poor(T6, T651, T652, T6510, T6511)

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