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7050
AMS 4341 / AlZn6CuMgZr / 7050 / T73511
| Chemical Properties | % Value |
| Silicon (Si) | 0,00 - 0,12 |
| Chromium (Cr) | 0,00 - 0,04 |
| Manganese (Mn) | 0,00 - 0,10 |
| Magnesium (Mg) | 1,90 - 2,60 |
| Copper (Cu) | 2,00 - 2,60 |
| Titanium (Ti) | 0,00 - 0,06 |
| Iron (Fe) | 0,00 - 0,15 |
| Zinc (Zn) | 5,70 - 6,70 |
| Aluminium (Al) | Balance |
| Physical Properties | Value |
| Density | 2.83 g/cm³ |
| Melting Point | 477 °C |
| Thermal Expansion | 22.1 µm/m.°C |
| Modulus of Elasticity | 71.7 GPa |
| Thermal Conductivity | 155 W/m.K |
| Electrical Resistivity | 35 % IACS |
| Mechanical Properties | Value |
| Proof Strength | 434 MPa |
| Yield Strength | 504 MPa |
| Shear Strength | 290 MPa |
| Elongation A50 mm | 12% |
| Hardness | 132 HB |
| 7050 T73511 Temperature – Ultimate Tensile Strength Graph |
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| 7050 T73511 Thickness – Ultimate Tensile Strength Graph |
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| 7050 T73511 Diameter – Ultimate Tensile Strength Graph |
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| 7050 T73511 Diameter-Yield Tensile Strength |
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7050 T73511 aluminum alloy belongs to the Al-Zn-Mg-Cu based 7000 series and represents a temper condition optimized for extrusion products. The T73511 temper includes solution heat treatment, controlled overaging, and stretching/straightening processes. Compared to the T6 condition, it provides slightly lower strength but significantly improved resistance to stress corrosion cracking (SCC), making it suitable for high-reliability applications.
In terms of corrosion resistance, 7050 T73511 offers strong SCC resistance within the 7000 series. Its resistance to stress corrosion cracking is significantly higher than that of 7075-T6. However, its general corrosion resistance is lower than that of 6000 series alloys. Protective coatings are recommended in aggressive environments.
Regarding strength and mechanical properties, 7050 T73511 provides high strength, although slightly lower than T74511 and T76511 tempers. In return, toughness and resistance to crack propagation are improved. Compared to 2024 alloy, it offers higher strength and better damage tolerance. It provides stable performance in extrusion products.
In terms of machinability, bendability, and weldability, 7050 T73511 has moderate machinability. Machining is possible but not as easy as with 6000 series alloys. Its weldability is limited and it is generally not preferred for welded applications. Its bending capability is low, and forming operations are typically performed before heat treatment. It offers good linear stability and controlled internal stress in extrusion products.
Regarding coating ability, vibration behavior, and applications, 7050 alloy is suitable for anodizing and protective coatings, although its decorative surface quality is limited. Its vibration damping capacity is low. Main application areas include aerospace industry, extrusion structural profiles, aircraft frame components, military systems, and high load-bearing parts. 7050 T73511 is preferred in applications where improved SCC resistance and extrusion stability are required along with adequate strength.
7050 T73511 can be produced according to the following standards:
• 7050 T73511 Extrusion Round Bar; AMS 4341, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T73511 Extrusion Sheet; AMS 4341, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T73511 Extrusion Wire; AMS 4341, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T73511 Extrusion Tube; AMS 4341, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T73511 Extrusion Profile; AMS 4341, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
Selection Criteria for 7050 T73511
- Strength: Excellent
- Machinability: Good
- Weldability: Poor
- Formability: Moderate
- Corrosion Resistance: Excellent
- Heat Treatment: Yes
Common Applications of 7050 T73511
In the defense industry,
As fasteners in aircraft,
Also used as components for pressure bulkheads in ships and airplanes.
- Rod / Bar / Sheet
- Tube / Profile
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