Alcoa 2324-T39 Aluminum Plate

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Alcoa 2324-T39 Aluminum Plate
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes:	Alloy 2324-T39 is a higher strength version of alloy 2024-T351 and is a purity controlled composition variant of alloy 2024. It was developed for tension-dominated, fatigue and fracture critical plate applications. The T39 temper, developed through special fabricating practices, improves both strength and fracture toughness properties over alloy 2024 plate. Alloy 2324-T39 plate is being used successfully on lower wing skin and center wing box components of commercial aircraft. Information provided by Alcoa.
Key Words:	Aluminium
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Physical Properties	Original Value	Comments

Density	2.77 g/cc	per Aluminum Association

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	>= 475 MPa	Guaranteed minimum; long transverse
Tensile Strength, Yield	>= 370 MPa	Guaranteed minimum; long transverse
Elongation at Break	>= 8.0 %	Guaranteed minimum; long transverse
Modulus of Elasticity	72.4 GPa	AA2024
Poissons Ratio	0.33	AA2024
Shear Modulus	27.0 GPa	AA2024

Electrical Properties	Original Value	Comments
Electrical Resistivity	27.0 ohm-cir-mil/ft	AA2024

Thermal Properties	Original Value	Comments
CTE, linear	12.9 µin/in-°F @Temperature 20.0 °C	AA2024
	24.7 µm/m-°C @Temperature 20.0 - 300 °C	average; AA2024
Specific Heat Capacity	0.875 J/g-°C	AA2024
Thermal Conductivity	1050 BTU-in/hr-ft²-°F	AA2024

Component Elements Properties	Original Value	Comments
Aluminum, Al	92 - 94.7 %	As Remainder
Chromium, Cr	<= 0.10 %
Copper, Cu	3.8 - 4.4 %
Iron, Fe	<= 0.12 %
Magnesium, Mg	1.2 - 1.8 %
Manganese, Mn	0.30 - 0.90 %
Other, each	<= 0.050 %
Other, total	<= 0.15 %
Silicon, Si	<= 0.10 %
Titanium, Ti	<= 0.15 %
Zinc, Zn	<= 0.25 %

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NALCOA40 / 14755

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