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Aluminum 7075-O
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy
Material Notes: General 7075 characteristics and uses (from Alcoa): Very high strength material used for highly stressed structural parts. The T7351 temper offers improved stress-corrosion cracking resistance.

Uses: Aircraft fittings, gears and shafts, fuse parts, meter shafts and gears, missile parts, regulating valve parts, worm gears, keys, aircraft, aerospace and defense applications.

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 0.25 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: UNS A97075; ISO AlZn5.5MgCu(A); Aluminium 7075-O; AA7075-O; Al7075-O
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Physical PropertiesOriginal ValueComments
Density 2.81 g/ccAA; Typical
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 60AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop 80Converted from Brinell Hardness Value
Hardness, Vickers 68Converted from Brinell Hardness Value
Tensile Strength, Ultimate 33.0 ksiAA; Typical
 <= 276 MPaSheet and plate
Tensile Strength, Yield 15.0 ksiAA; Typical
 <= 145 MPaSheet and plate
Elongation at Break >= 10 %Sheet and plate
 17 %
@Thickness 1.59 mm		AA; Typical
 16 %
@Diameter 12.7 mm		AA; Typical
Modulus of Elasticity 10400 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poissons Ratio 0.33
Shear Modulus 26.9 GPa
Shear Strength 22.0 ksiAA; Typical
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000380 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 13.1 µin/in-°F
@Temperature 20.0 - 100 °C		AA; Typical; average over range
 21.6 µm/m-°C
@Temperature -50.0 - 20.0 °C
 23.4 µm/m-°C
@Temperature 20.0 - 100 °C
 24.3 µm/m-°C
@Temperature 20.0 - 200 °C
 25.2 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.960 J/g-°C
Thermal Conductivity 173 W/m-K
Melting Point 890 - 1175 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Homogenization may raise eutectic melting temperature 20-40°F but usually does not eliminate it.
Solidus 890 °FAA; Typical
Liquidus 1175 °FAA; Typical
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 775 °F
Solution Temperature 870 - 900 °F
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 87.1 - 91.4 %As remainder
Chromium, Cr 0.18 - 0.28 %
Copper, Cu 1.2 - 2.0 %
Iron, Fe <= 0.50 %
Magnesium, Mg 2.1 - 2.9 %
Manganese, Mn <= 0.30 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si <= 0.40 %
Titanium, Ti <= 0.20 %
Zinc, Zn 5.1 - 6.1 %

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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Aluminum 7075-T6; 7075-T651
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Alclad Aluminum 7075-T6, T651
Alclad Aluminum 7075-O

MA7075O / 9594




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