Aluminum 7475-T61


Subcategory: 7000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal

Close Analogs:

Composition Notes:
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.

Key Words: UNS A97475; ISO AlZn5.5MgCu(A); Aluminium 7475-T61; AA7475-T61

Component   Wt. %
Al88.5 - 91.5 
Cr0.18 - 0.25 
Cu1.2 - 1.9 
FeMax 0.12 
Component   Wt. %
Mg1.9 - 2.6 
MnMax 0.06 
Other, eachMax 0.05 
Other, totalMax 0.15 
Component   Wt. %
SiMax 0.1 
TiMax 0.06 
Zn5.2 - 6.2 

Material Notes:
Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Physical PropertiesMetricEnglishComments
Density2.81 g/cc0.102 lb/in³ AA; Typical

Mechanical Properties
Hardness, Brinell148148 500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop188188 Converted from Brinell Hardness Value
Hardness, Rockwell A53.253.2 Converted from Brinell Hardness Value
Hardness, Rockwell B8787 Converted from Brinell Hardness Value
Hardness, Vickers173173 Converted from Brinell Hardness Value
Ultimate Tensile Strength565 MPa82000 psi AA; Typical
Tensile Yield Strength490 MPa71000 psi AA; Typical
Elongation at Break11 %11 % AA; Typical; 1/16 in. (1.6 mm) Thickness
Modulus of Elasticity70.3 GPa10200 ksi AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poisson's Ratio0.330.33 
Shear Modulus27 GPa3920 ksi 
Shear Strength330 MPa47900 psi Calculated value.

Electrical Properties
Electrical Resistivity4.99e-006 ohm-cm4.99e-006 ohm-cm AA; Typical at 68°F

Thermal Properties
CTE, linear 68°F23.2 µm/m-°C12.9 µin/in-°F AA; Typical; Average over 68-212°F range.
CTE, linear 250°C25.2 µm/m-°C14 µin/in-°F Average over the range 20-300ºC
Specific Heat Capacity0.88 J/g-°C0.21 BTU/lb-°F Estimated from trends in similar Al alloys.
Thermal Conductivity138 W/m-K960 BTU-in/hr-ft²-°F AA; Typical at 77°F
Melting Point477 - 635 °C890 - 1175 °F AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater
Solidus477 °C890 °F AA; Typical
Liquidus635 °C1175 °F AA; Typical

Processing Properties
Annealing Temperature413 °C775 °F 
Solution Temperature516 °C960 °F must be preceded by soak at 870 to 890°F
Aging Temperature121 - 177 °C250 - 350 °F 

References for this datasheet.


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