Aluminum 7039-T64
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy
Material Notes: Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Composition Notes:
Composition information provided by the Aluminum Association and is not for design.
Key Words: UNS A97039; Aluminium 7039-T64; AA7039-T64; Al7039-T64
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Physical PropertiesMetricEnglishComments
Density 2.74 g/cc0.0990 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 133133500 kg load with 10 mm ball
 133
@Load 1500 kg		133
@Load 3310 lb
Hardness, Knoop 167167Converted from Brinell Hardness Value
Hardness, Rockwell A 5050Converted from Brinell Hardness Value
Hardness, Rockwell B 8181Converted from Brinell Hardness Value
Hardness, Vickers 153153Converted from Brinell Hardness Value
Tensile Strength, Ultimate 450 MPa65300 psi
 450 MPa65300 psiLongitudinal
 450 MPa65300 psiTransverse
Tensile Strength, Yield 380 MPa55100 psi
 380 MPa55100 psiLongitudinal; 0.2%
 380 MPa55100 psiTransverse; 0.2%
Elongation at Break 13 %13 %In 5 cm; Sample 1.6 mm thick
 13 %13 %Longitudinal
 13 %13 %Transverse
 11 %
@Thickness 38.0 mm,
Temperature 24.0 °C		11 %
@Thickness 1.50 in,
Temperature 75.2 °F
 11 %
@Thickness 38.0 mm,
Temperature -195 °C		11 %
@Thickness 1.50 in,
Temperature -319 °F
 12 %
@Thickness 45.0 mm,
Temperature 24.0 °C		12 %
@Thickness 1.77 in,
Temperature 75.2 °F
 12 %
@Thickness 45.0 mm,
Temperature -195 °C		12 %
@Thickness 1.77 in,
Temperature -319 °F
Modulus of Elasticity 69.6 GPa10100 ksiAverage of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Compressive Yield Strength 400 MPa58000 psiLongitudinal; 0.2%
 410 MPa59500 psi0.1% Permanent Set
 415 MPa60200 psiTransverse; 0.2%
Bearing Yield Strength 910 MPa132000 psiLongitudinal; Ultimate
 910 MPa132000 psiTransverse; Ultimate
Poissons Ratio 0.330.33Estimated from trends in similar Al alloys.
Fatigue Strength 180 MPa
@# of Cycles 5.00e+8 		26100 psi
@# of Cycles 5.00e+8
Shear Modulus 26.0 GPa3770 ksiEstimated from similar Al alloys.
Shear Strength 255 MPa37000 psiTransverse
 260 MPa37700 psi
 270 MPa39200 psiLongitudinal
Charpy Impact 7.50 J5.53 ft-lbJ Transverse Impact Toughness of 4 cm Plate
 6.50 J
@Thickness 45.0 mm,
Temperature -195 °C		4.79 ft-lb
@Thickness 1.77 in,
Temperature -319 °F
 7.50 J
@Thickness 38.0 mm,
Temperature 24.0 °C		5.53 ft-lb
@Thickness 1.50 in,
Temperature 75.2 °F
 7.60 J
@Thickness 45.0 mm,
Temperature 24.0 °C		5.61 ft-lb
@Thickness 1.77 in,
Temperature 75.2 °F
 8.30 J
@Thickness 38.0 mm,
Temperature -195 °C		6.12 ft-lb
@Thickness 1.50 in,
Temperature -319 °F
Charpy Impact, Unnotched 70.0 J51.6 ft-lbUnnotched Transverse Impact Toughness of 4 cm Plate
 66.2 J
@Thickness 45.0 mm,
Temperature 24.0 °C		48.8 ft-lb
@Thickness 1.77 in,
Temperature 75.2 °F
 75.3 J
@Thickness 38.0 mm,
Temperature 24.0 °C		55.5 ft-lb
@Thickness 1.50 in,
Temperature 75.2 °F
 87.5 J
@Thickness 45.0 mm,
Temperature -195 °C		64.5 ft-lb
@Thickness 1.77 in,
Temperature -319 °F
 96.7 J
@Thickness 38.0 mm,
Temperature -195 °C		71.3 ft-lb
@Thickness 1.50 in,
Temperature -319 °F
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000450 ohm-cm0.00000450 ohm-cmEstimated from trends in similar Al alloys.
 
Thermal PropertiesMetricEnglishComments
CTE, linear  23.4 µm/m-°C
@Temperature 20.0 - 100 °C		13.0 µin/in-°F
@Temperature 68.0 - 212 °F
 25.2 µm/m-°C
@Temperature 20.0 - 300 °C		14.0 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.880 J/g-°C0.210 BTU/lb-°FEstimated from trends in similar Al alloys.
Thermal Conductivity 140 W/m-K972 BTU-in/hr-ft²-°F
Melting Point 482 - 638 °C900 - 1180 °F
Solidus 482 °C900 °F
Liquidus 638 °C1180 °F
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 354 - 371 °C670 - 700 °F
Solution Temperature 460 - 499 °C860 - 930 °Fsoak 2 hr, quench in cold water; sheet stock should be quenched from 910 to 930°F, while extruded stock should be quenched from 860 to 880°F
Aging Temperature 121 °C250 °Fhold at temperature for 20 to 24 hr, air cool
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 90.5 - 94 %90.5 - 94 %As remainder
Chromium, Cr 0.15 - 0.25 %0.15 - 0.25 %
Copper, Cu <= 0.10 %<= 0.10 %
Iron, Fe <= 0.40 %<= 0.40 %
Magnesium, Mg 2.3 - 3.3 %2.3 - 3.3 %
Manganese, Mn 0.10 - 0.40 %0.10 - 0.40 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.30 %<= 0.30 %
Titanium, Ti <= 0.10 %<= 0.10 %
Zinc, Zn 3.5 - 4.5 %3.5 - 4.5 %

References for this datasheet.

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