Aluminum 7076-T61

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Aluminum 7076-T61
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 A97076; Aluminium 7076-T61; AA7076-T61; Al7076-T61
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Physical Properties	Original Value	Comments

Density	2.84 g/cc	AA; Typical

Mechanical Properties	Original Value	Comments
Hardness, Brinell	150	500 kg load with 10 mm ball
Hardness, Knoop	191	Converted from Brinell Hardness Value
Hardness, Rockwell A	53.5	Converted from Brinell Hardness Value
Hardness, Rockwell B	87	Converted from Brinell Hardness Value
Hardness, Vickers	176	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	510 MPa
Tensile Strength, Yield	470 MPa
Elongation at Break	14 % @Thickness 1.60 mm	In 5 cm
Modulus of Elasticity	67.0 GPa	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio	0.33	Estimated from trends in similar Al alloys.
Shear Modulus	25.0 GPa	Estimated from similar Al alloys.
Shear Strength	300 MPa	Calculated value.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000430 ohm-cm	Estimated from trends in similar Al alloys.

Thermal Properties	Original Value	Comments
CTE, linear	21.6 µm/m-°C @Temperature 20.0 - 100 °C
	23.2 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.880 J/g-°C	Estimated from trends in similar Al alloys.
Thermal Conductivity	160 W/m-K	Estimated from trends in similar Al alloys.
Melting Point	<= 630 °C	Estimated from trends in similar Al alloys.
Liquidus	630 °C	Estimated from trends in similar Al alloys.

Processing Properties	Original Value	Comments
Annealing Temperature	670 - 700 °F
Precipitation Temperature	250 °F	after solution anneal, heat to temperature for 24 hr, air cool

Component Elements Properties	Original Value	Comments
Aluminum, Al	86.8 - 91.2 %	As remainder
Copper, Cu	0.30 - 1.0 %
Iron, Fe	<= 0.60 %
Magnesium, Mg	1.2 - 2.0 %
Manganese, Mn	0.30 - 0.80 %
Other, each	<= 0.05 %
Other, total	<= 0.15 %
Silicon, Si	<= 0.40 %
Titanium, Ti	<= 0.20 %
Zinc, Zn	7.0 - 8.0 %

References for this datasheet.

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Overview of materials for 7000 Series Aluminum Alloy

MA7076T61 / 9598

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