Aluminum 2024-T4; 2024-T351
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 Has largely superseded 2017 for structural applications.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.

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 2024-T351; AA2024-T351, Aluminium 2024-T4; UNS A92024; ISO AlCu4Mg1; NF A-U4G1 (France); DIN AlCuMg2; AA2024-T4, ASME SB211; CSA CG42 (Canada); Al2024-T4
Vendors: Click here to view all available suppliers for this material.

Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 2.78 g/cc0.100 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 120120AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop 150150Converted from Brinell Hardness Value
Hardness, Rockwell A 46.846.8Converted from Brinell Hardness Value
Hardness, Rockwell B 7575Converted from Brinell Hardness Value
Hardness, Vickers 137137Converted from Brinell Hardness Value
Tensile Strength, Ultimate >= 395 MPa>= 57300 psiWire, rod, bar and shapes (extruded); T42
 >= 425 MPa>= 61600 psiCoiled sheet
 >= 425 MPa>= 61600 psiWire, rod, and bar (rolled or cold finished); T42
 >= 425 MPa>= 61600 psiWire, rod, and bar (rolled or cold finished); T351
 >= 425 MPa>= 61600 psiRivet and cold-heading wire and rod
 >= 440 MPa>= 63800 psiDrawn tube; T42
 469 MPa68000 psiAA; Typical
 >= 495 MPa>= 71800 psiExtruded tube; T42
 34.0 MPa
@Temperature 371 °C		4930 psi
@Temperature 700 °F
 52.0 MPa
@Temperature 316 °C		7540 psi
@Temperature 601 °F
 76.0 MPa
@Temperature 260 °C		11000 psi
@Temperature 500 °F
 179 MPa
@Temperature 204 °C		26000 psi
@Temperature 399 °F
 310 MPa
@Temperature 149 °C		45000 psi
@Temperature 300 °F
 434 MPa
@Temperature 100 °C		62900 psi
@Temperature 212 °F
 469 MPa
@Temperature 24.0 °C		68000 psi
@Temperature 75.2 °F
 476 MPa
@Temperature -28.0 °C		69000 psi
@Temperature -18.4 °F
 490 MPa
@Temperature -80.0 °C		71100 psi
@Temperature -112 °F
 579 MPa
@Temperature -196 °C		84000 psi
@Temperature -321 °F
Tensile Strength, Yield >= 260 MPa>= 37700 psiWire, rod, bar and shapes (extruded); T42
 >= 260 MPa>= 37700 psiExtruded tube; T42
 >= 275 MPa>= 39900 psiCoiled sheet
 >= 275 MPa>= 39900 psiWire, rod, and bar (rolled or cold finished); T42
 >= 275 MPa>= 39900 psiDrawn tube; T42
 >= 275 MPa>= 39900 psiRivet and cold-heading wire and rod
 >= 310 MPa>= 45000 psiWire, rod, and bar (rolled or cold finished); T351
 324 MPa47000 psiAA; Typical
 28.0 MPa
@Strain 0.2 %,
Temperature 371 °C		4060 psi
@Strain 0.2 %,
Temperature 700 °F
 41.0 MPa
@Strain 0.2 %,
Temperature 316 °C		5950 psi
@Strain 0.2 %,
Temperature 601 °F
 62.0 MPa
@Strain 0.2 %,
Temperature 260 °C		8990 psi
@Strain 0.2 %,
Temperature 500 °F
 131 MPa
@Strain 0.2 %,
Temperature 204 °C		19000 psi
@Strain 0.2 %,
Temperature 399 °F
 248 MPa
@Strain 0.2 %,
Temperature 149 °C		36000 psi
@Strain 0.2 %,
Temperature 300 °F
 310 MPa
@Strain 0.2 %,
Temperature 100 °C		45000 psi
@Strain 0.2 %,
Temperature 212 °F
 324 MPa
@Strain 0.2 %,
Temperature -28.0 °C		47000 psi
@Strain 0.2 %,
Temperature -18.4 °F
 324 MPa
@Strain 0.2 %,
Temperature 24.0 °C		47000 psi
@Strain 0.2 %,
Temperature 75.2 °F
 338 MPa
@Strain 0.2 %,
Temperature -80.0 °C		49000 psi
@Strain 0.2 %,
Temperature -112 °F
 421 MPa
@Strain 0.2 %,
Temperature -196 °C		61100 psi
@Strain 0.2 %,
Temperature -321 °F
Elongation at Break >= 10 %>= 10 %Wire, rod, and bar (rolled or cold finished); T42
 >= 10 %>= 10 %Wire, rod, and bar (rolled or cold finished); T351
 >= 10 %>= 10 %Rivet and cold-heading wire and rod
 8.0 - 12 %8.0 - 12 %Wire, rod, bar and shapes (extruded); T42
 8.0 - 12 %8.0 - 12 %Extruded tube; T42
 10 - 16 %10 - 16 %Drawn tube; T42
 12 - 15 %12 - 15 %Coiled sheet
 17 %
@Temperature 149 °C		17 %
@Temperature 300 °F
 19 %
@Temperature -196 °C		19 %
@Temperature -321 °F
 19 %
@Temperature -80.0 °C		19 %
@Temperature -112 °F
 19 %
@Temperature -28.0 °C		19 %
@Temperature -18.4 °F
 19 %
@Temperature 24.0 °C		19 %
@Temperature 75.2 °F
 19 %
@Temperature 100 °C		19 %
@Temperature 212 °F
 27 %
@Temperature 204 °C		27 %
@Temperature 399 °F
 55 %
@Temperature 260 °C		55 %
@Temperature 500 °F
 75 %
@Temperature 316 °C		75 %
@Temperature 601 °F
 100 %
@Temperature 371 °C		100 %
@Temperature 700 °F
Modulus of Elasticity 73.1 GPa10600 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Ultimate Bearing Strength 814 MPa118000 psiEdge distance/pin diameter = 2.0
Bearing Yield Strength 441 MPa64000 psiEdge distance/pin diameter = 2.0
Poissons Ratio 0.330.33
Fatigue Strength 138 MPa
@# of Cycles 5.00e+8 		20000 psi
@# of Cycles 5.00e+8 		completely reversed stress; RR Moore machine/specimen
Fracture Toughness 26.0 MPa-m½23.7 ksi-in½K(IC) in S-L Direction
 32.0 MPa-m½29.1 ksi-in½K(IC) in T-L Direction
 37.0 MPa-m½33.7 ksi-in½K(IC) in L-T Direction
Machinability 70 %70 %0-100 Scale of Aluminum Alloys
Shear Modulus 28.0 GPa4060 ksi
Shear Strength 283 MPa41000 psiAA; Typical
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000582 ohm-cm
@Temperature 20.0 °C		0.00000582 ohm-cm
@Temperature 68.0 °F		AA; Typical
 
Thermal PropertiesMetricEnglishComments
CTE, linear  21.1 µm/m-°C
@Temperature -50.0 - 20.0 °C		11.7 µin/in-°F
@Temperature -58.0 - 68.0 °F
 22.9 µm/m-°C
@Temperature 20.0 - 100 °C		12.7 µin/in-°F
@Temperature 68.0 - 212 °F
 23.2 µm/m-°C
@Temperature 20.0 - 100 °C		12.9 µin/in-°F
@Temperature 68.0 - 212 °F		AA; Typical; average over range
 23.8 µm/m-°C
@Temperature 20.0 - 200 °C		13.2 µin/in-°F
@Temperature 68.0 - 392 °F
 24.7 µm/m-°C
@Temperature 20.0 - 300 °C		13.7 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.875 J/g-°C0.209 BTU/lb-°F
Thermal Conductivity 121 W/m-K840 BTU-in/hr-ft²-°FAA; Typical at 77°F
Melting Point 502 - 638 °C935 - 1180 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting is not eliminated by homogenization.
Solidus 502 °C935 °FAA; Typical
Liquidus 638 °C1180 °FAA; Typical
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 413 °C775 °F
Solution Temperature 493 °C919 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 90.7 - 94.7 %90.7 - 94.7 %As remainder
Chromium, Cr <= 0.10 %<= 0.10 %
Copper, Cu 3.8 - 4.9 %3.8 - 4.9 %
Iron, Fe <= 0.50 %<= 0.50 %
Magnesium, Mg 1.2 - 1.8 %1.2 - 1.8 %
Manganese, Mn 0.30 - 0.90 %0.30 - 0.90 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.50 %<= 0.50 %
Titanium, Ti <= 0.15 %<= 0.15 %
Zinc, Zn <= 0.25 %<= 0.25 %

References for this datasheet.

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