AA 2011 T451 Aluminum Alloy – Superior Machining & Mechanical Strength

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	T451	AA Standards, ASTM B211
	3.1 g/cm³	T451

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	70.0 GPa	T451	AA Standards, ASTM B211
Elongation	14.0 %	T451	AA Standards, ASTM B211	A100
	16.0 %	T451	AA Standards, ASTM B211	A50
	16.0 %	T451
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	275.0 MPa	T451	AA Standards, ASTM B211
	320.0 MPa	T451
Yield strength	125.0 MPa	T451	AA Standards, ASTM B211	RP02
	140.0 MPa	T451

Thermal

Property	Temperature	Value	Condition	Related Standards
Coefficient of thermal expansion		2.3e-05 1/K	T451
	20 °C	2.2899999999999998e-05 1/K	T451	AA Standards, ASTM B211
	100 °C	2.2899999999999998e-05 1/K	T451	AA Standards, ASTM B211
Melting point		540.0 - 645.0 °C	T451	AA Standards, ASTM B211
		540.0 °C	T451
Specific heat capacity		860.0 J/(kg·K)	T451
Thermal conductivity		151.0 - 172.0 W/(m·K)	T451	AA Standards, ASTM B211

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	23000000.0 - 26000000.0 S/m	T451	AA Standards, ASTM B211
Electrical resistivity	3.85e-08 - 4.35e-08 Ω·m	T451	AA Standards, ASTM B211

Chemical properties

Property	Value	Condition	Related Standards
Aluminium	91.3 - 94.6 %	T451
Bismuth	0.2 - 0.6 %	T451	AA Standards, ASTM B211
Copper	5.0 - 6.0 %	T451	AA Standards, ASTM B211
Iron	0.70 %	T451	AA Standards, ASTM B211
	0.7 %	T451
Lead	0.2 - 0.6 %	T451	AA Standards, ASTM B211
Other	0.15 %	T451
Silicon	0.4 %	T451	AA Standards, ASTM B211
Zinc	0.3 %	T451	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)

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