Aluminum 7039-T64

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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 Properties	Metric	English	Comments

Density	2.74 g/cc	0.0990 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	133	133	500 kg load with 10 mm ball
	133 @Load 1500 kg	133 @Load 3310 lb
Hardness, Knoop	167	167	Converted from Brinell Hardness Value
Hardness, Rockwell A	50	50	Converted from Brinell Hardness Value
Hardness, Rockwell B	81	81	Converted from Brinell Hardness Value
Hardness, Vickers	153	153	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	450 MPa	65300 psi
	450 MPa	65300 psi	Longitudinal
	450 MPa	65300 psi	Transverse
Tensile Strength, Yield	380 MPa	55100 psi
	380 MPa	55100 psi	Longitudinal; 0.2%
	380 MPa	55100 psi	Transverse; 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 GPa	10100 ksi	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Compressive Yield Strength	400 MPa	58000 psi	Longitudinal; 0.2%
	410 MPa	59500 psi	0.1% Permanent Set
	415 MPa	60200 psi	Transverse; 0.2%
Bearing Yield Strength	910 MPa	132000 psi	Longitudinal; Ultimate
	910 MPa	132000 psi	Transverse; Ultimate
Poissons Ratio	0.33	0.33	Estimated 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 GPa	3770 ksi	Estimated from similar Al alloys.
Shear Strength	255 MPa	37000 psi	Transverse
	260 MPa	37700 psi
	270 MPa	39200 psi	Longitudinal
Charpy Impact	7.50 J	5.53 ft-lb	J 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 J	51.6 ft-lb	Unnotched 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 Properties	Metric	English	Comments
Electrical Resistivity	0.00000450 ohm-cm	0.00000450 ohm-cm	Estimated from trends in similar Al alloys.

Thermal Properties	Metric	English	Comments
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-°C	0.210 BTU/lb-°F	Estimated from trends in similar Al alloys.
Thermal Conductivity	140 W/m-K	972 BTU-in/hr-ft²-°F
Melting Point	482 - 638 °C	900 - 1180 °F
Solidus	482 °C	900 °F
Liquidus	638 °C	1180 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	354 - 371 °C	670 - 700 °F
Solution Temperature	460 - 499 °C	860 - 930 °F	soak 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 °C	250 °F	hold at temperature for 20 to 24 hr, air cool

Component Elements Properties	Metric	English	Comments
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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MA7039T64 / 9566

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