ASTM B211 Grade 2011 Aluminum: T6 & T651 – Performance & Machining Excellence

Aluminum ASTM 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, ASTM 2011 does not offer good corrosion resistance or weldability.

Properties

General

Property	Value	Comment
Density	2.75 - 2.84 g/cm³	Typical for Wrought 2000 Series Aluminium

Mechanical

Property	Value	Condition	Related Standards	Shape	Comment
Elastic modulus	70.0 - 73.0 GPa				Typical for Wrought 2000 Series Aluminium
Elongation	9.0 %	T6 and T651	ASTM B211	Bar, Rod, Wire
	10.0 %	T6 and T651	ASTM B211	Bar, Rod, Wire	A50
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	T6 and T651	ASTM B211	Bar, Rod, Wire

Thermal

Property	Value	Comment
Coefficient of thermal expansion	1.6e-05 - 2.4e-05 1/K	Typical for Wrought 2000 Series Aluminium
Melting point	500.0 - 650.0 °C	Typical for Wrought 2000 Series Aluminium
Specific heat capacity	816.0 - 963.0 J/(kg·K)	Typical for Wrought 2000 Series Aluminium
Thermal conductivity	112.0 - 251.0 W/(m·K)	Typical for Wrought 2000 Series Aluminium

Electrical

Property	Value	Comment
Electrical conductivity	18000000.0 - 30000000.0 S/m	Typical for Wrought 2000 Series Aluminium
Electrical resistivity	3.4e-08 - 6e-08 Ω·m	Typical for Wrought 2000 Series Aluminium

Chemical properties

Property	Value	Condition	Related Standards	Shape
Bismuth	0.2 - 0.6 %	T6 and T651	ASTM B211	Bar, Rod, Wire
Copper	5.0 - 6.0 %	T6 and T651	ASTM B211	Bar, Rod, Wire
Iron	0.7	T6 and T651	ASTM B211	Bar, Rod, Wire
Silicon	0.4	T6 and T651	ASTM B211	Bar, Rod, Wire
Tin	0.2 - 0.6 %	T6 and T651	ASTM B211	Bar, Rod, Wire
Zinc	0.3	T6 and T651	ASTM B211	Bar, Rod, Wire

Technological properties

Property
Workability	Moderate Workability

Property

Workability

Moderate Workability

ASTM B211 Grade 2011 (T4 & T451) – Properties, Machining, and Applications ASTM B211 Grade 2011 T8 Aluminum Alloy – Outstanding Machining and Mechanical Performance

Metal