Aluminum 7050-T7451 (7050-T73651)
Material Notes: 7050 alloy exhibits excellent strength characteristics and is highly resistant to exfoliation corrosion and stress corrosion cracking. Due to its considerable superior fracture toughness and fatigue resistance, this material is suitable for aircraft structures.
Composition Notes: Remember that the Aluminum Association provides composition information only for reference and should not be used for design purposes.
Specifications for Aluminum 7050-T7451 (7050-T73651)
This table provides a summary of material properties in terms of almost all of its elements concerning the physical, mechanical, electrical, thermal, processing, and component properties.
|  | |||
|---|---|---|---|
| Property | Metric | English | Comments |
| Density | 2.83 g/cc | 0.102 lb/in³ | AA; Typical |
| Hardness, Brinell | 140 | 140 | 500 kg load with 10 mm ball. Calculated value. |
| Hardness, Knoop | 177 | 177 | Converted from Brinell Hardness Value |
| Hardness, Rockwell A | 51.6 | 51.6 | Converted from Brinell Hardness Value |
| Hardness, Rockwell B | 84 | 84 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 162 | 162 | Converted from Brinell Hardness Value |
| Tensile Strength, Ultimate | 524 MPa | 76000 psi | AA; Typical |
| Tensile Strength, Yield | 469 MPa | 68000 psi | AA; Typical |
| Elongation at Break | 11% | 11% | @Diameter 12.7 mm / 0.500 in; AA; Typical |
| Modulus of Elasticity | 71.7 GPa | 10400 ksi | AA; Typical; Average of tension and compression. |
| Poissons Ratio | 0.33 | 0.33 | |
| Fracture Toughness | >= 22.0 to 35.2 MPa-m½ | >= 20.0 to 32.0 ksi-in½ | Various directions (S-L, T-L, L-T) |
| Shear Modulus | 26.9 GPa | 3900 ksi | |
| Shear Strength | 303 MPa | 44000 psi | AA; Typical |
| Electrical Resistivity | 0.00000430 ohm-cm | 0.00000430 ohm-cm | |
| CTE, linear | 21.7 to 25.4 µm/m-°C | 12.1 to 14.1 µin/in-°F | Various temperature ranges |
| Specific Heat Capacity | 0.860 J/g-°C | 0.206 BTU/lb-°F | |
| Thermal Conductivity | 157 W/m-K | 1090 BTU-in/hr-ft²-°F | |
| Melting Point | 488 - 629.4 °C | 910 - 1165 °F | AA; Typical range for wrought products >= 1/4 in. thickness |
| Solidus | 488 °C | 910 °F | AA; Typical |
| Liquidus | 629.4 °C | 1165 °F | AA; Typical |
| Annealing Temperature | 413 °C | 775 °F | |
| Solution Temperature | 477 °C | 890 °F | |
| Aging Temperature | 121 - 177 °C | 250 - 350 °F | |
| Aluminum, Al | 87.3 - 90.3 % | 87.3 - 90.3 % | As remainder |
| Chromium, Cr | <= 0.04 % | <= 0.04 % | |
| Copper, Cu | 2.0 - 2.6 % | 2.0 - 2.6 % | |
| Iron, Fe | <= 0.15 % | <= 0.15 % | |
| Magnesium, Mg | |||
| Manganese, Mn | <= 0.10 % | <= 0.10 % | |
| Other, each | <= 0.05 % | <= 0.05 % | |
| Other, total | <= 0.15 % | <= 0.15 % | |
| Silicon, Si | <= 0.12 % | <= 0.12 % | |
| Titanium, Ti | <= 0.06 % | <= 0.06 % | |
| Zinc, Zn | 5.7 - 6.7 % | 5.7 - 6.7 % | |
| Zirconium, Zr | 0.08 - 0.15 % | 0.08 - 0.15 % |
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