AA 2011 T651 Aluminum Alloy: Standards, Properties & Applications

Aluminum AA 2011 is a popular age-hardenable alloy known for its free-machining characteristics and mechanical properties. It can be machined to very close tolerances while still maintaining a smooth and bright finish. Unlike other aluminum alloys, AA 2011 does not offer good corrosion resistance or weldability.

Additional services: Cuttings, Parts from drawings

Properties

General

Property	Value	Condition	Related Standards
Density	2.83 g/cm³	T651	AA Standards, ASTM B211

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	70.0 GPa	T651	AA Standards, ASTM B211
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 2000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 2000 Series Aluminium
Shear modulus	26.0 - 27.5 GPa			Typical for Wrought 2000 Series Aluminium
Tensile strength	370.0 MPa	T651	AA Standards, ASTM B211

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.2899999999999998e-05 1/K	T651	AA Standards, ASTM B211
	100 °C	2.2899999999999998e-05 1/K	T651	AA Standards, ASTM B211
Melting point		540.0 - 645.0 °C	T651	AA Standards, ASTM B211
Specific heat capacity		816.0 - 963.0 J/(kg·K)			Typical for Wrought 2000 Series Aluminium
Thermal conductivity		151.0 - 172.0 W/(m·K)	T651	AA Standards, ASTM B211

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	23000000.0 - 26000000.0 S/m	T651	AA Standards, ASTM B211
Electrical resistivity	3.85e-08 - 4.35e-08 Ω·m	T651	AA Standards, ASTM B211

Chemical properties

Property	Value	Condition	Related Standards
Bismuth	0.2 - 0.6 %	T651	AA Standards, ASTM B211
Copper	5.0 - 6.0 %	T651	AA Standards, ASTM B211
Iron	0.70 %	T651	AA Standards, ASTM B211
Lead	0.2 - 0.6 %	T651	AA Standards, ASTM B211
Silicon	0.4 %	T651	AA Standards, ASTM B211
Zinc	0.3 %	T651	AA Standards, ASTM B211

Technological properties

Property
Brazing	general: no brazing is known or developed
Corrosion properties	Stress corrosion cracking: Limited operational damage(T3, T4, T451), no damage during operation, limited damage during laboratory tests (T8), general: sufficient, in principle it should be protected
General machinability	General: very good
Workability	general (condition): poor(T3), acceptable (T4, T451), d (T8)

AA 2011 T4511 Aluminum Alloy – Standards & Properties 8011A O – Non‑Heat Treatable Aluminum Wrought Alloy: Key Properties & Applications

Metal