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
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Material Notes:
Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.
Physical Properties
| Physical Properties | Metric | English | Comments |
| Density | 2.81 g/cc | 0.102 lb/in³ | AA; Typical |
Mechanical Properties
| Hardness, Brinell | 148 | 148 | 500 kg load with 10 mm ball. Calculated value. |
| Hardness, Knoop | 188 | 188 | Converted from Brinell Hardness Value |
| Hardness, Rockwell A | 53.2 | 53.2 | Converted from Brinell Hardness Value |
| Hardness, Rockwell B | 87 | 87 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 173 | 173 | Converted from Brinell Hardness Value |
| Ultimate Tensile Strength | 565 MPa | 82000 psi | AA; Typical |
| Tensile Yield Strength | 490 MPa | 71000 psi | AA; Typical |
| Elongation at Break | 11 % | 11 % | AA; Typical; 1/16 in. (1.6 mm) Thickness |
| Modulus of Elasticity | 70.3 GPa | 10200 ksi | AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus. |
| Poisson’s Ratio | 0.33 | 0.33 | |
| Shear Modulus | 27 GPa | 3920 ksi | |
| Shear Strength | 330 MPa | 47900 psi | Calculated value. |
Electrical Properties
| Electrical Resistivity | 4.99e-006 ohm-cm | 4.99e-006 ohm-cm | AA; Typical at 68°F |
Thermal Properties
| CTE, linear 68°F | 23.2 µm/m-°C | 12.9 µin/in-°F | AA; Typical; Average over 68-212°F range. |
| CTE, linear 250°C | 25.2 µm/m-°C | 14 µin/in-°F | Average over the range 20-300ºC |
| Specific Heat Capacity | 0.88 J/g-°C | 0.21 BTU/lb-°F | Estimated from trends in similar Al alloys. |
| Thermal Conductivity | 138 W/m-K | 960 BTU-in/hr-ft²-°F | AA; Typical at 77°F |
| Melting Point | 477 – 635 °C | 890 – 1175 °F | AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater |
| Solidus | 477 °C | 890 °F | AA; Typical |
| Liquidus | 635 °C | 1175 °F | AA; Typical |
Processing Properties
| Annealing Temperature | 413 °C | 775 °F | |
| Solution Temperature | 516 °C | 960 °F | must be preceded by soak at 870 to 890°F |
| Aging Temperature | 121 – 177 °C | 250 – 350 °F |