Aluminum 2124-O


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 2124-O; UNS A92124; QQ-A-250/29; ASTM B209; AMS 4101; AA2124-O

Component   Wt. %
Al91.2 - 94.7 
CrMax 0.1 
Cu3.8 - 4.9 
FeMax 0.3 
Component   Wt. %
Mg1.2 - 1.8 
Mn0.3 - 0.9 
Other, eachMax 0.05 
Other, totalMax 0.15 
Component   Wt. %
SiMax 0.2 
TiMax 0.15 
ZnMax 0.25 

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

Physical PropertiesMetricEnglishComments
Density2.78 g/cc0.1 lb/in AA; Typical

Mechanical Properties
Modulus of Elasticity73 GPa10600 ksi Average of Tension and Compression. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poisson's Ratio0.330.33 Estimated from trends in similar Al alloys.
Shear Modulus27 GPa3920 ksi Estimated from similar Al alloys.

Electrical Properties
Electrical Resistivity4.2e-006 ohm-cm4.2e-006 ohm-cm 

Thermal Properties
CTE, linear 68F22.9 m/m-C12.7 in/in-F AA; Typical; Average over 68-212F range.
CTE, linear 250C24.7 m/m-C13.7 in/in-F Average over the range 20-300C
Specific Heat Capacity0.882 J/g-C0.211 BTU/lb-F 
Thermal Conductivity193 W/m-K1340 BTU-in/hr-ft-F 
Melting Point502 - 638 C935 - 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.
Solidus502 C935 F AA; Typical
Liquidus638 C1180 F AA; Typical

Processing Properties
Annealing Temperature413 C775 F 
Solution Temperature493 C920 F 
Aging Temperature191 C375 F 

References for this datasheet.


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