6061 aluminum is a representative product of 6000 series aluminum alloy, composed primarily of aluminum, along with magnesium and silicon as major alloying elements.
6061 aluminum is a widely used alloy known for its exceptional strength, lightweight nature, and excellent corrosion resistance.
6061 is a heat treatable alloy, and the common tempers are O, T4, T6, T651.
| AA6061 | EN AW-6061 | UNS A96061 | AlMg1SiCu |
| ISO AlMg1SiCu | G-AlMg1SiCu | AD-33(Russia) | 3.3211 (European standard designation) |
| SAE AMS 4027 (AMS 4027 aluminum) | ASTM B209 Alloy 6061 | JIS H4000 Grade 6061 |
| Constituent element |
Minimum (% by weight) |
Maximum (% by weight) |
| Al | 95.85% | 98.56% |
| Mg | 0.80% | 1.20% |
| Si | 0.40% | 0.80% |
| Fe | 0 | 0.70% |
| Cu | 0.15% | 0.40% |
| Cr | 0.04% | 0.35% |
| Zn | 0 | 0.25% |
| Ti | 0 | 0.15% |
| Mn | 0 | 0.15% |
| (others) | 0 | 0.15% total (0.05% each) |
Table Source: https://en.wikipedia.org/wiki/6061_aluminium_alloy
Strength and Durability
6061 Aluminum has an excellent strength-to-weight ratio, making it ideal for applications requiring high strength with low weight, such as architectural structures, mechanical structures, manufacturing aerospace structures, etc.
It has a tensile strength of up to 45,000 psi (310 MPa) and 40,000 psi (275 MPa) yield strength. This alloy also exhibits excellent stress and crack resistance, ensuring long-lasting durability in demanding environments.
Machinability and Formability
6061 aluminum possesses excellent machinability, allowing for easy fabrication and machining processes such as milling, drilling, and turning. It can be formed into various shapes and sizes, making it adaptable to different manufacturing requirements. The alloy also demonstrates good weldability, enabling seamless joining of components.
Heat Treatability
6061 aluminum is heat treatable for increased strength and hardness. Through the precipitation hardening process, the alloy can achieve higher levels of mechanical strength while maintaining good formability. Heat treatments can be customized to meet specific application requirements, making 6061 aluminum a versatile choice for a wide variety of industries.
Corrosion resistance
One of the key benefits of 6061 aluminum is its excellent corrosion resistance, which is the highest of any heat-treated aluminum in its class. When exposed to atmospheric conditions, it forms a protective oxide layer that provides excellent corrosion protection and reduces the need for additional coatings or treatments. This makes 6061 aluminum suitable for marine environments with high humidity or exposure to corrosive substances.
6061 has superior physical properties, especially ultra-high strength, excellent corrosion resistance, weldability and excellent formability;
| Property | Value |
|---|---|
| Tensile Strength | 45,000 psi (310 MPa) |
| Yield Strength | 40,000 psi (275 MPa) |
| Density | 2.7 g/cm³ (0.0975 lbs/in3) |
| Melting Point | 582°C (1080°F) |
| Modulus of Elasticity | 68.9 GPa (10,000 ksi) |
| Thermal Conductivity | 167 W/m·K |
| Electrical Conductivity | 43.8% IACS |
| Specific Heat Capacity | 0.897 J/g·K |
| Coefficient of Thermal Expansion | 23.5 µm/m·°C (at 20-100°C) |
| Hardness (Brinell) | 95 HB |
| Corrosion Resistance | Excellent |
| Machinability | Good |
| Formability | Good |
| Weldability | Good |
| Heat Treatability | Yes |
The density of 6061 aluminum is approximately 2.7 g/cm³ (or 0.0975 lbs/in³),same as density of pure aluminum;
6061 aluminum strength is much higher than pure aluminum.
6061 aluminium strength depends on the tempered grade, including 6061-O, 6061-T4, and 6061-T6. With 6061-T6, for example, the parameters for measuring how strong it is depends on the yield and tensile strengths.
The yield strength of a material measures its allowable stress limit when force is applied to it. When the force exerted is above this value, permanent deformation will take place and the material is unable to return to its original shape. On the other hand, the tensile stress of a material is the maximum stress above which it will fail and break.
That said, the yield stress of 6061-T6 aluminum is at least 35,000 psi or 241 Mpa. While its tensile stress is a value upwards of 42000 psi or 290 Mpa.
6061 aluminum finds extensive use in numerous industries, including:
Aerospace: It is employed in aircraft structures, wings, and fuselage components due to its lightweight and high strength characteristics.
Automotive: 6061 aluminum is used in the manufacturing of car frames, engine components, and suspension systems, contributing to improved fuel efficiency and reduced vehicle weight.
Construction: The alloy is utilized in architectural structures, window frames, and roofing systems, offering durability and resistance to corrosion in outdoor environments.
Marine: 6061 aluminum is commonly used in boat hulls, decks, and marine equipment due to its corrosion resistance and ability to withstand harsh saltwater conditions.
Sports Equipment: It is employed in the production of bicycles, skis, and other sports equipment, providing a lightweight yet robust material for enhanced performance.
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| 6061 aluminum for aerospace | 6061 aluminum for car |
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| 6061 aluminum for building | 6061 aluminum for ship |
The price of 6061 aluminum per pound can vary depending on various factors such as market conditions, quantity ordered, and supplier. As of my knowledge cutoff in September 2021, the average price range for 6061 aluminum per pound was approximately $1.00 to $1.50. However, please note that aluminum prices are subject to fluctuations, and it is advisable to check with current market rates or specific suppliers for the most accurate and up-to-date pricing information.
The things to consider when choosing an aluminum grade are listed below:
Aluminum alloys exhibit a plethora of forms and grades, and their selection relies heavily upon the intended application. By precisely defining the end-use, one can systematically evaluate the attributes and properties of each grade. The task at hand becomes simplified as the appropriate alloy can be chosen, aligning with the desired characteristics. Consider, for instance, a project that prioritizes excellent weldability over sheer strength. In such a scenario, the ideal choice would be 1100 aluminum alloy. This particular grade offers commendable weldability while not being tailored for high-strength applications.
As one of the top ten suppliers of aluminum products in China, Henan Huawei Aluminum has produced and sold 6061 aluminum for a long time, and has a large inventory. Our products are sold to 72 countries in the world.
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