AA 2024 T651 Aluminum Alloy – High Strength for Aerospace Applications

Aluminum AA 2024, known for its use in aircraft industry, is an alloy that offers excellent strength. When in the annealed condition it is readily formed and has good machinability. Though it has a relatively low level of corrosion resistance, it can be machined to a high finish.

Properties

General

Property	Value	Condition
Density	2.78 g/cm³	T651
	3.0 g/cm³	T651

Mechanical

Property	Temperature	Value	Condition	Comment
Elastic modulus		73.0 GPa	T651
Elongation	-195 °C	11 %	T651	Elongation in 50 mm
	-80 °C	10 %	T651	Elongation in 50 mm
		4.6 %	T651
	0 °C	10 %	T651	Elongation in 50 mm
	24 °C	10 %	T651	Elongation in 50 mm
	100 °C	10 %	T651	Elongation in 50 mm
	150 °C	17 %	T651	Elongation in 50 mm
	205 °C	27 %	T651	Elongation in 50 mm
	260 °C	55 %	T651	Elongation in 50 mm
	315 °C	75 %	T651	Elongation in 50 mm
	370 °C	100 %	T651	Elongation in 50 mm
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		28.0 GPa	T651
Tensile strength	-195 °C	580 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	-80 °C	495 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	0 °C	483 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
		490.0 MPa	T651
	24 °C	475 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	100 °C	448 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	150 °C	310 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	205 °C	180 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	260 °C	75 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	315 °C	52 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
	370 °C	35 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
Yield strength	-195 °C	469 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	-80 °C	407 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
		360.0 MPa	T651
	0 °C	400 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	24 °C	393 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	100 °C	372 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	150 °C	248 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	205 °C	131 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	260 °C	62 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	315 °C	41 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
	370 °C	28 MPa	T651	up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02

Thermal

Property	Value	Condition
Coefficient of thermal expansion	2.3e-05 1/K	T651
Melting point	500.0 °C	T651
Specific heat capacity	870.0 J/(kg·K)	T651
Thermal conductivity	120.0 W/(m·K)	T651

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
Aluminium	90.7 - 94.7 %	T651
Chromium	0.1 %	T651
Copper	3.8 - 4.9 %	T651
Iron	0.5 %	T651
Magnesium	1.2 - 1.8 %	T651
Manganese	0.3 - 0.9 %	T651
Other	0.15 %	T651
Silicon	0.5 %	T651
Titanium	0.15 %	T651
Zinc	0.25 %	T651
Zirconium	0.2 %	T651

Technological properties

Property
Workability	Moderate Workability

Property

Workability

Moderate Workability

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