Chemical Composition of Commonly Used Aluminum Alloys (Refer to Standard GB/T 3190-2020)
Properties and Applications of Some Commonly Used Aluminum Alloys
Series 1 (Pure aluminum, with aluminum content no less than 99%)
Grades: 1060, 1100, 1050
1060 Pure Aluminum: Excellent electrical and thermal conductivity, but low strength. Widely used in chemical equipment and electrical/thermal conductive devices.
Series 3 (Mainly manganese)
Grades: 3003 (Aluminum-manganese alloy)
3003: Low strength. Suitable for parts requiring good formability, high corrosion resistance, and weldability, such as kitchenware, containers for food and chemical products, tanks for transporting liquid products, and various pressure vessels and pipes made from thin plates.
Series 5 (Mainly magnesium)
Grades: 5052, 5754, 5083
5052: Good formability and corrosion resistance, medium strength. Used in manufacturing aircraft fuel tanks, oil pipes, sheet metal parts for transportation vehicles and ships, instrument parts, and hardware products.
Series 6 (Mainly magnesium and silicon)
Grades: 6061, 6063
6061: Suitable for industrial structures with certain strength requirements, high weldability, and corrosion resistance, such as manufacturing trucks, building structural components, mechanical parts, and precision machined parts.
6063: The most widely used aluminum alloy material in construction and industry, such as doors and windows, furniture, industrial radiators, and industrial components.
Series 7 (Mainly zinc)
Grades: 7075
7075: High strength and good corrosion resistance, widely used in aerospace and high-performance structural applications.
Series 8 (Other elements)
Grades: 8011, 8021
8011/8021: Suitable for applications requiring good corrosion resistance and formability, often used in packaging and general industrial applications.
Why Aluminum is Used for High-Voltage Power Lines Instead of Copper with Better Conductivity
High-voltage power lines must use aluminum. Aluminum is much more stable in nature than copper. Copper is prone to corrosion and rusting (forming copper green) when exposed to water, while aluminum forms a dense oxide layer in the air that prevents further oxidation. Additionally, aluminum has only one-third the density of copper, significantly reducing the difficulty and cost of erecting power lines.
Power lines are usually overhead. Copper wires are too heavy for long-distance installation. Although copper has better conductivity than aluminum under high-current conditions, modern power transmission lines operate at high voltage (even ultra-high voltage), which reduces current flow and, consequently, line losses. Considering the cost of installation and safety, aluminum is the most suitable choice.
Classification of Aluminum Tubing
By wall thickness: Thin-walled tubes and thick-walled tubes.
By size: Large-diameter thick-walled tubes, large-diameter thin-walled tubes, and small-diameter thin-walled tubes.
By cross-sectional shape: Round tubes, oval tubes, drop-shaped tubes, flat round tubes, square tubes, rectangular tubes, hexagonal tubes, octagonal tubes, pentagonal tubes, trapezoidal tubes, ribbed tubes, and other special-shaped tubes.
By manufacturing method: Hot-extruded tubes, cold-extruded tubes, drawn tubes, coiled tubes, etc.
Is Aluminum Tableware Toxic?
Aluminum is a highly oxidizable metal, and aluminum oxide is a very stable and non-toxic substance. However, it is important to avoid prolonged contact with salt and acidic substances.
What Does T6 Heat Treatment Mean for Aluminum Alloys?
Heat treatment designations for aluminum alloys:
T1: Artificial aging
T2: Annealing
T4: Solution treatment followed by natural aging
T5: Solution treatment followed by incomplete artificial aging
T6: Solution treatment followed by complete artificial aging
T7: Solution treatment followed by stabilization treatment
Solution Treatment: Heating the alloy to a high-temperature single-phase region and holding it at a constant temperature to fully dissolve excess phases into the solid solution, followed by rapid cooling (water quenching) to obtain a supersaturated solid solution.
Incomplete Artificial Aging: Using lower aging temperatures or shorter holding times to achieve good comprehensive mechanical properties, such as higher strength, good ductility, and toughness, but possibly lower corrosion resistance.
Complete Artificial Aging: Using higher aging temperatures and longer holding times to achieve maximum hardness and tensile strength, but with lower elongation.
How to Control the Hardness of Aluminum Extrusions?
The hardness of aluminum materials is influenced by multiple factors, including alloy composition, quenching rate, aging temperature, and holding time. Controlling each process step is crucial.
Requirements for High-Quality Aluminum Extrusion Dies
To manufacture a high-quality aluminum extrusion die, it is essential to have good machining equipment, skilled die technicians, and excellent die structural design. A qualified die design should meet the following requirements: under the premise of satisfying customer requirements, it should achieve low processing costs, low processing difficulty, short processing time, and long die life. To achieve these goals, the die designer must fully understand the customer’s product requirements and be familiar with the extrusion machine, die structure, processing technology, and the plant’s processing capabilities.
What Tolerances Can Be Achieved for Profiles and Machining? Can They Be Guaranteed?
We need you to provide detailed information such as drawings, material alloy, and usage requirements for specific evaluation. Under normal circumstances, we produce according to the high-precision level of the national standard.
How to Calculate the Heat Dissipation Area of Aluminum Radiators?
The heat dissipation area is calculated based on the contact surface between the profile and air, which must be the surface that can effectively dissipate heat. This can be calculated using 3D software.
How Long Does It Take to Deliver Industrial Profiles, and Can You Deliver to the Doorstep?
Please confirm the specific product with our salesperson before placing an order. Depending on the type of product and processing required, our delivery period is approximately 7-45 days. Please communicate with the salesperson regarding production delivery and transportation issues.
