AA 2011 T4: Premium Aluminum Alloy for Precise Machining

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	T4	AA Standards, ASTM B211
	3.1 g/cm³	T4

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	70.0 GPa	T4	AA Standards, ASTM B211
Elongation	14.0 %	T4	AA Standards, ASTM B211	A100
	16.0 %	T4	AA Standards, ASTM B211	A50
	16.0 %	T4
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	T4	AA Standards, ASTM B211
	320.0 MPa	T4
Yield strength	125.0 MPa	T4	AA Standards, ASTM B211	RP02
	140.0 MPa	T4

Thermal

Property	Temperature	Value	Condition	Related Standards
Coefficient of thermal expansion		2.3e-05 1/K	T4
	20 °C	2.2899999999999998e-05 1/K	T4	AA Standards, ASTM B211
	100 °C	2.2899999999999998e-05 1/K	T4	AA Standards, ASTM B211
Melting point		540.0 - 645.0 °C	T4	AA Standards, ASTM B211
		540.0 °C	T4
Specific heat capacity		860.0 J/(kg·K)	T4
Thermal conductivity		150.0 W/(m·K)	T4
		151.0 - 172.0 W/(m·K)	T4	AA Standards, ASTM B211

Electrical

Property	Value	Condition	Related Standards	Comment
Electrical conductivity	23000000.0 - 26000000.0 S/m	T4	AA Standards, ASTM B211
	23000000 S/m	T4		Typical/derived value
Electrical resistivity	3.85e-08 - 4.35e-08 Ω·m	T4	AA Standards, ASTM B211
	4.4e-08 Ω·m	T4		Typical value
Specific Electrical conductivity	39.0 % IACS	T4		Typical value

Chemical properties

Property	Value	Condition	Related Standards
Aluminium	91.3 - 94.6 %	T4
Bismuth	0.2 - 0.6 %	T4	AA Standards, ASTM B211
Copper	5.0 - 6.0 %	T4	AA Standards, ASTM B211
Iron	0.70 %	T4	AA Standards, ASTM B211
	0.7 %	T4
Lead	0.2 - 0.6 %	T4	AA Standards, ASTM B211
Other	0.15 %	T4
Silicon	0.4 %	T4	AA Standards, ASTM B211
Zinc	0.3 %	T4	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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