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Aluminum 2024-T851
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes: Weldability = C; Stress Corrosion Cracking Resistance = B; General Corrosion Resistance = D (A = best; E = worst). 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 Has largely superseded 2017 for structural applications.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.

Some data provided by Alcoa.

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-T851; AA2024-T851; UNS A92024; Al2024-T851
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 PropertiesOriginal ValueComments
Density 2.78 g/ccAA; Typical
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 128500 kg load/10 mm ball
Hardness, Knoop 161Estimated from Brinell
Hardness, Rockwell A 49Estimated from Brinell
Hardness, Rockwell B 79Estimated from Brinell
Hardness, Vickers 146Estimated from Brinell
Tensile Strength, Ultimate >= 455 MPa
 >= 455 MPaWire, rod, and bar (rolled or cold finished)
 34.0 MPa
@Temperature 371 °C
 52.0 MPa
@Temperature 316 °C
 76.0 MPa
@Temperature 260 °C
 186 MPa
@Temperature 204 °C
 379 MPa
@Temperature 149 °C
 455 MPa
@Temperature 100 °C
 483 MPa
@Temperature 24.0 °C
 503 MPa
@Temperature -28.0 °C
 510 MPa
@Temperature -80.0 °C
 586 MPa
@Temperature -196 °C
 >= 455 MPa
@Thickness 12.7 - 25.4 mm		Plate
 >= 455 MPa
@Thickness 25.43 - 38.07 mm		Plate
 >= 460 MPa
@Thickness 6.35 - 12.7 mm		Plate
 >= 440 MPa
@Diameter 1.27 - 6.32 mm		Extruded tube; T8510, T8511
 >= 440 MPa
@Diameter 1.27 - 6.32 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 455 MPa
@Diameter 6.35 - 38.1 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 455 MPa
@Diameter 6.35 - 38.1 mm		Extruded tube; T8510, T8511
Tensile Strength, Yield >= 400 MPa
 >= 400 MPaWire, rod, and bar (rolled or cold finished)
 >= 395 MPa
@Thickness 25.43 - 38.07 mm		Plate
 >= 400 MPa
@Thickness 6.35 - 12.7 mm		Plate
 >= 400 MPa
@Thickness 12.7 - 25.4 mm		Plate
 >= 385 MPa
@Diameter 1.27 - 6.32 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 385 MPa
@Diameter 1.27 - 6.32 mm		Extruded tube; T8510, T8511
 >= 400 MPa
@Diameter 6.35 - 38.1 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 400 MPa
@Diameter 6.35 - 38.1 mm		Extruded tube; T8510, T8511
 28.0 MPa
@Strain 0.2 %,
Temperature 371 °C
 41.0 MPa
@Strain 0.2 %,
Temperature 316 °C
 62.0 MPa
@Strain 0.2 %,
Temperature 260 °C
 138 MPa
@Strain 0.2 %,
Temperature 204 °C
 338 MPa
@Strain 0.2 %,
Temperature 149 °C
 427 MPa
@Strain 0.2 %,
Temperature 100 °C
 448 MPa
@Strain 0.2 %,
Temperature 24.0 °C
 469 MPa
@Strain 0.2 %,
Temperature -28.0 °C
 476 MPa
@Strain 0.2 %,
Temperature -80.0 °C
 538 MPa
@Strain 0.2 %,
Temperature -196 °C
Elongation at Break 5.0 %
 >= 5.0 %Wire, rod, and bar (rolled or cold finished)
 7.0 %
@Temperature -80.0 °C
 7.0 %
@Temperature -28.0 °C
 7.0 %
@Temperature 24.0 °C
 8.0 %
@Temperature -196 °C
 8.0 %
@Temperature 100 °C
 11 %
@Temperature 149 °C
 23 %
@Temperature 204 °C
 55 %
@Temperature 260 °C
 75 %
@Temperature 316 °C
 100 %
@Temperature 371 °C
 >= 5.0 %
@Thickness 6.35 - 12.7 mm		Plate
 >= 5.0 %
@Thickness 12.7 - 25.4 mm		Plate
 >= 5.0 %
@Thickness 25.43 - 38.07 mm		Plate
 >= 4.0 %
@Diameter 1.27 - 6.32 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 4.0 %
@Diameter 1.27 - 6.32 mm		Extruded tube; T8510, T8511
 >= 5.0 %
@Diameter 6.35 - 38.1 mm		Wire, rod, bar and shapes (extruded); T851, T8510, T8511
 >= 5.0 %
@Diameter 6.35 - 38.1 mm		Extruded tube; T8510, T8511
Modulus of Elasticity 72.4 GPaEstimated from other heat treatments.
Poissons Ratio 0.33Estimated from other heat treatments.
Fatigue Strength 117 MPa
@# of Cycles 5.00e+8 		completely reversed; R. R. Moore Machine and specimen.
Machinability 70 %0-100 Scale (A=90; B=70; C=50; D=30; E=10)
Shear Modulus 27.0 GPaEstimated from similar Al alloys.
Shear Strength 296 MPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000450 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.9 µin/in-°F
@Temperature 20.0 - 100 °C		AA; Typical; average over range
 21.1 µm/m-°C
@Temperature -50.0 - 20.0 °C
 22.9 µm/m-°C
@Temperature 20.0 - 100 °C
 23.8 µm/m-°C
@Temperature 20.0 - 200 °C
 24.7 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.875 J/g-°C
Thermal Conductivity 151 W/m-K
Melting Point 935 - 1180 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting is not eliminated by homogenization.
Solidus 935 °FAA; Typical
Liquidus 1180 °FAA; Typical
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 775 °F
Solution Temperature 493 °C
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 90.7 - 94.7 %As remainder
Chromium, Cr <= 0.10 %
Copper, Cu 3.8 - 4.9 %
Iron, Fe <= 0.50 %
Magnesium, Mg 1.2 - 1.8 %
Manganese, Mn 0.30 - 0.90 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si <= 0.50 %
Titanium, Ti <= 0.15 %
Zinc, Zn <= 0.25 %

References for this datasheet.

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MA2024T851 / 8870




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