Aluminum Alloy 7010 (UNS A97010)
Aluminum 7010 is a high-strength aluminum alloy that is commonly used in aerospace, defense, and other applications where strength and toughness are critical. It is composed primarily of aluminum, with small amounts of zinc, copper, and magnesium added to improve its strength and toughness.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Aluminum | 87.8% | 90.6% |
| Chromium | —— | 0.05% |
| Copper | 1.5% | 2.0% |
| Iron | —— | 0.15% |
| Magnesium | 2.1% | 2.6% |
| Manganese | —— | 0.1% |
| Nickel | —— | 0.05% |
| Silicon | —— | 0.12% |
| Titanium | —— | 0.06% |
| Zinc | 5.7% | 6.7% |
| Zirconium | 0.1% | 0.16% |
| Residuals | —— | 0.15% |
The following table provides a list of aluminum 7010 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 2820 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength | 520 - 590 MPa |
| Yield Strength | 410 - 540 MPa |
| Shear Strength | 300 - 340 MPa |
| Fatigue Strength | 160 - 190 MPa |
| Young’s Modulus (E) | 70 GPa |
| Shear Modulus (G) | 26 GPa |
| Elongation at Break | 4 - 8% |
| Poisson’s Ratio (ν) | 0.32 |
| Thermal Properties | Metric |
| Melting Point | 475 °C |
| Thermal Conductivity | 150 W/m·K |
| Specific Heat Capacity (Cp) | 860 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.4×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 2.3×107 S/m |
| Electrical Resistivity | 4.3×10-8 Ω·m |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of Aluminum 7010
| Advantages | Disadvantages |
|---|---|
| High strength | Limited availability |
| Good fatigue resistance | Corrosion susceptibility |
| Weldability | High cost |
| Lightweight | Difficult to machine |
Applications of Aluminum 7010
Aluminum 7010 is a high-strength aluminum alloy that finds application in various industries where strength, toughness, and lightweight properties are required. Some common applications of Aluminum 7010 include:
- Aerospace: Aluminum 7010 is used in the aerospace industry for structural components such as wing structures, fuselage frames, and landing gear components. Its high strength-to-weight ratio makes it suitable for aircraft construction, where weight reduction is critical for fuel efficiency and performance.
- Defense and Military: The alloy is utilized in defense applications that require high strength and durability, such as armored vehicles, military aircraft, and missile structures. Its excellent fatigue resistance and ability to withstand heavy loads make it suitable for military-grade equipment.
- Sports Equipment: Aluminum 7010 is employed in the production of sports equipment such as bicycle frames, golf club heads, and tennis racket frames. Its strength and lightweight nature contribute to improved performance and maneuverability.
- Marine Industry: Due to its corrosion resistance and strength, Aluminum 7010 is used in marine applications, including boat hulls, marine fittings, and structures. Its resistance to saltwater corrosion makes it suitable for marine environments.
- Automotive: The automotive industry employs Aluminum 7010 for lightweight structural components, such as chassis parts, suspension components, and crash structures. The use of this alloy helps reduce vehicle weight, leading to improved fuel efficiency and handling.
- Industrial Equipment: Aluminum 7010 finds application in various industrial equipment, including hydraulic systems, machinery frames, and tooling. Its high strength and durability make it suitable for heavy-duty applications.
- Construction: Aluminum 7010 can be utilized in the construction industry for building structures and architectural components. Its strength and resistance to corrosion make it suitable for applications where durability is required.