Aluminum 2024-T6

Aluminum 2024-T6

Subcategory: 2000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal

Close Analogs:

Composition Notes:
A Zr + Ti limit of 0.20 percent maximum may be used with this alloy designation for extruded and forged products only, but only when the supplier or producer and the purchaser have mutually so agreed. Agreement may be indicated, for example, by reference to a standard, by letter, by order note, or other means which allow the Zr + Ti limit.
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.

Key Words: Aluminium 2024-T6; UNS A92024; ISO AlCu4Mg1; AA2024-T6

Component    Wt. %
Al 90.7 – 94.7
Cr Max 0.1
Cu 3.8 – 4.9
Fe Max 0.5
Component    Wt. %
Mg 1.2 – 1.8
Mn 0.3 – 0.9
Other, each Max 0.05
Other, total Max 0.15
Component    Wt. %
Si Max 0.5
Ti Max 0.15
Zn Max 0.25

Material Notes: 
Weldability = C; Stress Corrosion Cracking Resistance = B; General Corrosion Resistance = D (A = best; E = worst). Good machinability and surface finish capabilities. A high strength material of adequate workability. Has largely superceded 2017 for structural applications.

Uses: Aircraft fittings, gears and shafts, bolts, clock parts, computer parts, couplings, fuse parts, hydraulic valve bodies, missile parts, munitions, nuts, pistons, rectifier parts, worm gears, fastening devices, veterinary and orthopedic equipment, structures.

Some data provided by Alcoa.

Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Physical Properties

Physical Properties Metric English Comments
Density 2.78 g/cc 0.1 lb/in³  AA; Typical

Mechanical Properties

Hardness, Brinell 125 125  500 kg load/10 mm ball
Hardness, Knoop 157 157  Estimated from Brinell
Hardness, Rockwell A 48 48  Estimated from Brinell
Hardness, Rockwell B 78 78  Estimated from Brinell
Hardness, Vickers 142 142  Estimated from Brinell
Tensile Strength, Ultimate Min 427 MPa Min 61900 psi
Tensile Strength, Yield Min 345 MPa Min 50000 psi
Elongation at Break 5 % 5 %
Modulus of Elasticity 72.4 GPa 10500 ksi  Estimated from other heat treatments.
Poisson’s Ratio 0.33 0.33  Estimated from other heat treatments.
Fatigue Strength 124 MPa 18000 psi  500,000,000 cycles; completely reversed; R. R. Moore Machine and specimen.
Machinability 70 % 70 %  0-100 Scale (A=90; B=70; C=50; D=30; E=10)
Shear Modulus 27 GPa 3920 ksi  Estimated from similar Al alloys.
Shear Strength 283 MPa 41000 psi

Electrical Properties

Electrical Resistivity 4.49e-006 ohm-cm 4.49e-006 ohm-cm  AA; Typical at 68°F

Thermal Properties

CTE, linear 68°F 23.2 µm/m-°C 12.9 µin/in-°F  AA; Typical; Average over 68-212°F range.
CTE, linear 250°C 24.7 µm/m-°C 13.7 µin/in-°F  Average over the range 20-300ºC
Specific Heat Capacity 0.875 J/g-°C 0.209 BTU/lb-°F
Thermal Conductivity 151 W/m-K 1050 BTU-in/hr-ft²-°F  AA; Typical at 77°F
Melting Point 502 – 638 °C 935 – 1180 °F  AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater. Eutectic melting is not eliminated by homogenization.
Solidus 502 °C 935 °F  AA; Typical
Liquidus 638 °C 1180 °F  AA; Typical

Processing Properties

Annealing Temperature 413 °C 775 °F
Solution Temperature 256 °C 493 °F
Aging Temperature 191 °C 375 °F  8 to 16 hr at temperature