Aluminum 2124-O

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Aluminum 2124-O
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes:	Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN. 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 and the purchaser have mutually agreed. Composition information provided by the Aluminum Association and is not for design.
Key Words:	Aluminium 2124-O; UNS A92124; QQ-A-250/29; ASTM B209; AMS 4101; AA2124-O; Al2124-O
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Physical Properties	Original Value	Comments

Density	2.78 g/cc	AA; Typical

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	73.0 GPa	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio	0.33	Estimated from trends in similar Al alloys.
Shear Modulus	27.0 GPa	Estimated from similar Al alloys.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000420 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	12.7 µin/in-°F @Temperature 20.0 - 100 °C	AA; Typical; average over range
	21.1 µm/m-°C @Temperature -50.0 - 20.0 °C
	23.8 µm/m-°C @Temperature 20.0 - 200 °C
	24.7 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.882 J/g-°C
Thermal Conductivity	193 W/m-K
Melting Point	935 - 1180 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting is not eliminated by homogenization.
Solidus	935 °F	AA; Typical
Liquidus	1180 °F	AA; Typical

Processing Properties	Original Value	Comments
Annealing Temperature	775 °F
Solution Temperature	920 °F
Aging Temperature	375 °F

Component Elements Properties	Original Value	Comments
Aluminum, Al	91.2 - 94.7 %	As remainder
Chromium, Cr	<= 0.10 %
Copper, Cu	3.8 - 4.9 %
Iron, Fe	<= 0.30 %
Magnesium, Mg	1.2 - 1.8 %
Manganese, Mn	0.30 - 0.90 %
Other, each	<= 0.05 %
Other, total	<= 0.15 %
Silicon, Si	<= 0.20 %
Titanium, Ti	<= 0.15 %
Zinc, Zn	<= 0.25 %

References for this datasheet.

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MA2124O / 8913

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