Aluminum 2024-T4; 2024-T351

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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 Has largely superseded 2017 for structural applications.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
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Physical Properties	Original Value	Comments

Density	2.78 g/cc	AA; Typical

Mechanical Properties	Original Value	Comments
Hardness, Brinell	120	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	150	Converted from Brinell Hardness Value
Hardness, Rockwell A	46.8	Converted from Brinell Hardness Value
Hardness, Rockwell B	75	Converted from Brinell Hardness Value
Hardness, Vickers	137	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	68.0 ksi	AA; Typical
	>= 395 MPa	Wire, rod, bar and shapes (extruded); T42
	>= 425 MPa	Coiled sheet
	>= 425 MPa	Wire, rod, and bar (rolled or cold finished); T42
	>= 425 MPa	Wire, rod, and bar (rolled or cold finished); T351
	>= 425 MPa	Rivet and cold-heading wire and rod
	>= 440 MPa	Drawn tube; T42
	>= 495 MPa	Extruded tube; T42
	34.0 MPa @Temperature 371 °C
	52.0 MPa @Temperature 316 °C
	76.0 MPa @Temperature 260 °C
	179 MPa @Temperature 204 °C
	310 MPa @Temperature 149 °C
	434 MPa @Temperature 100 °C
	469 MPa @Temperature 24.0 °C
	476 MPa @Temperature -28.0 °C
	490 MPa @Temperature -80.0 °C
	579 MPa @Temperature -196 °C
Tensile Strength, Yield	47.0 ksi	AA; Typical
	>= 260 MPa	Wire, rod, bar and shapes (extruded); T42
	>= 260 MPa	Extruded tube; T42
	>= 275 MPa	Coiled sheet
	>= 275 MPa	Wire, rod, and bar (rolled or cold finished); T42
	>= 275 MPa	Drawn tube; T42
	>= 275 MPa	Rivet and cold-heading wire and rod
	>= 310 MPa	Wire, rod, and bar (rolled or cold finished); T351
	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
	131 MPa @Strain 0.2 %, Temperature 204 °C
	248 MPa @Strain 0.2 %, Temperature 149 °C
	310 MPa @Strain 0.2 %, Temperature 100 °C
	324 MPa @Strain 0.2 %, Temperature -28.0 °C
	324 MPa @Strain 0.2 %, Temperature 24.0 °C
	338 MPa @Strain 0.2 %, Temperature -80.0 °C
	421 MPa @Strain 0.2 %, Temperature -196 °C
Elongation at Break	>= 10 %	Wire, rod, and bar (rolled or cold finished); T42
	>= 10 %	Wire, rod, and bar (rolled or cold finished); T351
	>= 10 %	Rivet and cold-heading wire and rod
	8.0 - 12 %	Wire, rod, bar and shapes (extruded); T42
	8.0 - 12 %	Extruded tube; T42
	10 - 16 %	Drawn tube; T42
	12 - 15 %	Coiled sheet
	17 % @Temperature 149 °C
	19 % @Temperature -196 °C
	19 % @Temperature -80.0 °C
	19 % @Temperature -28.0 °C
	19 % @Temperature 24.0 °C
	19 % @Temperature 100 °C
	27 % @Temperature 204 °C
	55 % @Temperature 260 °C
	75 % @Temperature 316 °C
	100 % @Temperature 371 °C
Modulus of Elasticity	10600 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Ultimate Bearing Strength	814 MPa	Edge distance/pin diameter = 2.0
Bearing Yield Strength	441 MPa	Edge distance/pin diameter = 2.0
Poissons Ratio	0.33
Fatigue Strength	20000 psi @# of Cycles 5.00e+8	completely reversed stress; RR Moore machine/specimen
Fracture Toughness	26.0 MPa-m½	K(IC) in S-L Direction
	32.0 MPa-m½	K(IC) in T-L Direction
	37.0 MPa-m½	K(IC) in L-T Direction
Machinability	70 %	0-100 Scale of Aluminum Alloys
Shear Modulus	28.0 GPa
Shear Strength	41.0 ksi	AA; Typical

Electrical Properties	Original Value	Comments
Electrical Resistivity	35.0 ohm-cir-mil/ft @Temperature 20.0 °C	AA; Typical

Thermal Properties	Original Value	Comments
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	840 BTU-in/hr-ft²-°F	AA; Typical at 77°F
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	493 °C

Component Elements Properties	Original Value	Comments
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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MA2024T4 / 8867

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