AA 2024 T6 Aluminum: Aircraft-Grade Strength, Superior Machinability, and Fine Finish

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	Related Standards
Density	2.78 g/cm³	T6	AA Standards, ASTM B211
	2.78 g/cm³	T6
	3.0 g/cm³	T6

Mechanical

Property	Temperature	Value	Condition	Related Standards	Comment
Elastic modulus		73.0 GPa	T6	AA Standards, ASTM B211
Elongation	-195 °C	11 %	T6		Elongation in 50 mm
	-80 °C	10 %	T6		Elongation in 50 mm
		4.0 %	T6	AA Standards, ASTM B211	A100
		5.0 %	T6	AA Standards, ASTM B211	A50
		5.2 %	T6
	0 °C	10 %	T6		Elongation in 50 mm
	24 °C	10 %	T6		Elongation in 50 mm
	100 °C	10 %	T6		Elongation in 50 mm
	150 °C	17 %	T6		Elongation in 50 mm
	205 °C	27 %	T6		Elongation in 50 mm
	260 °C	55 %	T6		Elongation in 50 mm
	315 °C	75 %	T6		Elongation in 50 mm
	370 °C	100 %	T6		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	T6
Tensile strength	-195 °C	580 MPa	T6		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	T6		up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture
		425.0 MPa	T6	AA Standards, ASTM B211
	0 °C	483 MPa	T6		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	T6
	24 °C	475 MPa	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	T6		up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture, RP02
		345.0 MPa	T6	AA Standards, ASTM B211	RP02
		380.0 MPa	T6
	0 °C	400 MPa	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	T6		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	Temperature	Value	Condition	Related Standards
Coefficient of thermal expansion		2.3e-05 1/K	T6
	20 °C	2.3199999999999998e-05 1/K	T6	AA Standards, ASTM B211
	100 °C	2.3199999999999998e-05 1/K	T6	AA Standards, ASTM B211
Melting point		500.0 °C	T6
		505.0 - 635.0 °C	T6	AA Standards, ASTM B211
Specific heat capacity		870.0 J/(kg·K)	T6
Thermal conductivity		120.0 W/(m·K)	T6
		121.0 - 193.0 W/(m·K)	T6	AA Standards, ASTM B211

Electrical

Property	Value	Condition	Related Standards	Comment
Electrical conductivity	17000000.0 - 29000000.0 S/m	T6	AA Standards, ASTM B211
	22000000 S/m	T6		Typical value
Electrical resistivity	3.45e-08 - 5.88e-08 Ω·m	T6	AA Standards, ASTM B211
	4.5e-08 Ω·m	T6		Typical value
Specific Electrical conductivity	38.0 % IACS	T6		Typical/Derived value

Chemical properties

Property	Value	Condition	Related Standards
Aluminium	90.7 - 94.7 %	T6
Chromium	0.1 %	T6	AA Standards, ASTM B211
Copper	3.8 - 4.9 %	T6	AA Standards, ASTM B211
Iron	0.50 %	T6	AA Standards, ASTM B211
	0.5 %	T6
Magnesium	1.2 - 1.8 %	T6	AA Standards, ASTM B211
Manganese	0.3 - 0.9 %	T6	AA Standards, ASTM B211
Other	0.15 %	T6
Silicon	0.5 %	T6	AA Standards, ASTM B211
Titanium	0.15 %	T6	AA Standards, ASTM B211
Zinc	0.25 %	T6	AA Standards, ASTM B211
Zirconium	0.2 %	T6

Technological properties

Property
Brazing	general: no brazing is known or developed
Corrosion properties	Stress corrosion cracking: Betriebsschäden in Gebieten mit Zugspannungen quer zur Kornstruktur, Eingeschränkte Schäden an Laborproben (T4,T3, T351, T3510, T3511), d (T6, T861, T81, T851, T8510, T8511), general: sufficient, in principle it should be protected
General machinability	General: poor (O), good to acceptable
Workability	general (condition): poor(T4, T3, T351, T3510, T3511, T6), not suitable (T361, T861, T81, T851, T8510, T8511)

Corrodur 4104 QT650 – Premium Stainless Steel for High Machinability AA 2219 T6: Premium Strength Aluminum Alloy for High-Temperature Applications

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