Alclad Aluminum 2024-T81, T851

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Alclad Aluminum 2024-T81, T851
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes:	General 2024 characteristics and uses (from Alcoa): Good machinability and surface finish capabilities. A high strength material of adequate workability. Has largely superseded 2017 for structural applications.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. Intrinsic corrosion resistance of 2024 is low for an aluminum alloy, so the clad version is used where needed. Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN. Composition Notes: Composition for AA 2024 (not Alclad 2024). Composition information provided by the Aluminum Association and is not for design.
Key Words:	UNS A82024; Alclad 2024-T81, T851; Alclad 2024-T81, T851; Al2024-T81
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Physical Properties	Original Value	Comments

Density	2.78 g/cc	For AA2024 (Not Alclad)

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	65.0 ksi	AA; Typical
	>= 450 MPa @Thickness 6.35 - 12.7 mm	Plate; T851
	>= 455 MPa @Thickness 12.7 - 25.4 mm	Plate; T851
Tensile Strength, Yield	60.0 ksi	AA; Typical
	>= 385 MPa @Thickness 6.35 - 12.7 mm	Plate; T851
	>= 400 MPa @Thickness 12.7 - 25.4 mm	Plate; T851
Elongation at Break	>= 5.0 % @Thickness 6.35 - 12.7 mm	Plate; T851
	>= 5.0 % @Thickness 12.7 - 25.4 mm	Plate; T851
	6.0 % @Thickness 1.59 mm	AA; Typical
Modulus of Elasticity	10600 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Shear Strength	40.0 ksi	AA; Typical

Processing Properties	Original Value	Comments
Annealing Temperature	775 °F
Solution Temperature	493 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	90.7 - 94.7 %	As remainder
Chromium, Cr	<= 0.10 %
Copper, Cu	3.8 - 4.9 %
Iron, Fe	<= 0.50 %
Magnesium, Mg	1.2 - 1.8 %
Manganese, Mn	0.30 - 0.90 %
Other, each	<= 0.05 %
Other, total	<= 0.15 %
Silicon, Si	<= 0.50 %
Titanium, Ti	<= 0.15 %
Zinc, Zn	<= 0.25 %

References for this datasheet.

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MA2024AT81 / 8862

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