Aluminum 2124-T351


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-T351; UNS A92124; QQ-A-250/29; ASTM B209; AMS 4101; AA2124-T351

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/in³ AA; Typical

Mechanical Properties
Hardness, Brinell120120 500 kg load with 10 mm ball
Hardness, Knoop150150 Converted from Brinell Hardness Value
Hardness, Rockwell A4747 Converted from Brinell Hardness Value
Hardness, Rockwell B7575 Converted from Brinell Hardness Value
Hardness, Vickers137137 Converted from Brinell Hardness Value
Tensile Strength, Ultimate470 MPa68200 psi 
Tensile Strength, Yield325 MPa47100 psi 
Elongation at Break20 %20 % In 5 cm; Sample 1.6 mm thick
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.
Fatigue Strength140 MPa20300 psi 500,000,000 Cycles
Shear Modulus27 GPa3920 ksi Estimated from similar Al alloys.
Shear Strength285 MPa41300 psi 

Electrical Properties
Electrical Resistivity4.4e-006 ohm-cm4.4e-006 ohm-cm Estimated from other heat treatments.

Thermal Properties
CTE, linear 68°F22.9 µm/m-°C12.7 µin/in-°F AA; Typical; Average over 68-212°F range.
CTE, linear 250°C24.7 µm/m-°C13.7 µin/in-°F Average over the range 20-300ºC
Specific Heat Capacity0.882 J/g-°C0.211 BTU/lb-°F 
Thermal Conductivity150 W/m-K1040 BTU-in/hr-ft²-°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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