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The chassis, side panels, and floor of box vans are constructed from aluminum alloy profiles. The most commonly used aluminum alloys are the 6 series (e.g., 6061 and 6082), which combine high strength with heat-treatable strengthening properties, making them ideal for structural components. The core manufacturing process employs hot extrusion technology to produce hollow profiles with complex cross-sections, achieving a perfect balance between lightweight design and high rigidity. To address the issue of insufficient welding strength in aluminum alloys, connection points are typically secured using riveting, bolted joints, or mortise-and-tenon structures.
1.1 Lightweight and Economic Efficiency: Approximately 30%-40% lighter than similar steel vans (a weight reduction of about 0.8-3 tons), resulting in higher effective load capacity and reduced fuel consumption (for every 100kg reduction in vehicle weight, fuel consumption can be reduced by approximately 0.6L per 100km).
1.2 Durability and Lifespan: A dense oxide film forms on the surface of the aluminium alloy, providing strong corrosion resistance and a service life of over 15 years, far exceeding the 2-3 years of severe corrosion in ordinary steel vans, and requiring virtually no anti-corrosion maintenance.
1.3 Structural Design and Maintenance: Profiles are easily extruded into complex hollow cross-sections, resulting in good structural rigidity. The structure is simplified while the strength is ensured (yield strength can reach more than 200MPa). Modular design (such as mortise and tenon joints and riveting) allows for individual replacement of damaged parts, making maintenance convenient and cost-effective.
1.4 Operational and environmental value: The smooth and aesthetically pleasing surface facilitates painting; its lightweight design allows for greater cargo space or avoids overloading; the high recycling value of aluminium (residual value after scrapping can reach over 85% of the original aluminium) aligns with environmental trends.
6 Series (e.g., 6061, 6082) | The 6000 series (Al-Mg-Si) alloys, such as 6061-T6 and 6082-T6, are primarily used. These alloys can be heat-treated to achieve high strength, high toughness, and excellent weldability, making them the preferred choice for load-bearing structures. |
Typical Mechanical Properties | |
6061-T6 | As a benchmark for comprehensive performance, it exhibits a tensile strength of ≥310MPa and a yield strength of ≥276MPa. It demonstrates excellent balance in strength、 formability、 weldability and corrosion resistance. |
6082-T6 | It is a higher-strength "enhanced version" that is particularly popular in Europe. With a tensile strength of ≥340 MPa and a yield strength of ≥300 MPa, it maintains excellent weldability and corrosion resistance while offering superior static load-bearing capacity. |
3.1 High-end logistics/express delivery: This represents the primary market for aluminum alloy van vans. The feeder and trunk line transport fleets of e-commerce platforms, as well as the drop-and-pull transport systems of leading less-than-vanload (LTL) express companies, impose the highest demands on vehicle availability, lightweight design, and brand image. All-aluminum trailers and van vans serve as the core equipment for enhancing network efficiency and reducing per-ticket costs.
3.2 Cold chain transportation: Humid environment (condensation), temperature sensitive, high-value goods. Requires a well-insulated, corrosion-resistant, and odorless cargo box.
3.3 Precision instrument/high-value cargo transportation: Goods are sensitive to shock and moisture, and are highly valuable. Requires a stable, well-sealed, and clean interior.
3.4 Regulations-driven heavy-duty/specialized transportation: Under strict vehicle gross weight regulations (e.g., 49 tons), it is necessary to minimize chassis weight to create more weight space for the cargo.
