Aluminum 7076-T61

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	Metric	English	Comments

Density	2.84 g/cc	0.103 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	150	150	500 kg load with 10 mm ball
Hardness, Knoop	191	191	Converted from Brinell Hardness Value
Hardness, Rockwell A	53.5	53.5	Converted from Brinell Hardness Value
Hardness, Rockwell B	87	87	Converted from Brinell Hardness Value
Hardness, Vickers	176	176	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	510 MPa	74000 psi
Tensile Strength, Yield	470 MPa	68200 psi
Elongation at Break	14 % @Thickness 1.60 mm	14 % @Thickness 0.0630 in	In 5 cm
Modulus of Elasticity	67.0 GPa	9720 ksi	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Shear Modulus	25.0 GPa	3630 ksi	Estimated from similar Al alloys.
Shear Strength	300 MPa	43500 psi	Calculated value.

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

Thermal Properties	Metric	English	Comments
CTE, linear	21.6 µm/m-°C @Temperature 20.0 - 100 °C	12.0 µin/in-°F @Temperature 68.0 - 212 °F
	23.2 µm/m-°C @Temperature 20.0 - 300 °C	12.9 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	160 W/m-K	1110 BTU-in/hr-ft²-°F	Estimated from trends in similar Al alloys.
Melting Point	<= 630 °C	<= 1170 °F	Estimated from trends in similar Al alloys.
Liquidus	630 °C	1170 °F	Estimated from trends in similar Al alloys.

Processing Properties	Metric	English	Comments
Annealing Temperature	354 - 371 °C	670 - 700 °F
Precipitation Temperature	121 °C	250 °F	after solution anneal, heat to temperature for 24 hr, air cool

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

References for this datasheet.

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