Office Chair Leg Material
Common materials for office chair legs include nylon, steel, and aluminum alloy, each with distinct characteristics in terms of performance, cost, and applicable scenarios.
Nylon Chair Legs: These are formed through injection molding, requiring no welding in a single process. They are relatively lightweight, weighing approximately 0.8 - 1.5 kg, resulting in low inertia during movement and offering flexibility in use. Nylon is non-conductive, ensuring good safety, and also possesses resistance to moisture and chemical corrosion. With a low cost, nylon chair legs are suitable for mass production and matching. However, they have some drawbacks; they may become brittle under long-term heavy pressure or in low-temperature environments, although high-quality nylon can be reinforced with glass fibers to enhance performance. Theoretically, PA66 nylon legs can support up to 500 kg, but they will age over time, so it is recommended for individuals weighing less than 75 kg.
Steel Chair Legs: Typically made by bending and welding steel tubes or stamping and welding steel plates, their surfaces are treated with spray painting or electroplating (chromium). Steel chair legs are strong, not prone to breakage, and have high load-bearing capacity. After surface spray painting, they have moderate corrosion resistance. However, they are relatively heavy, weighing about 2 - 3 kg, making them laborious to move. Moreover, if the welding points are not properly treated, they may rust, and the electroplated versions are prone to fingerprints. Steel legs are suitable for individuals weighing over 80 jin or those who prefer to recline while working.
Aluminum Alloy Chair Legs: These are formed through die-casting and then undergo polishing, wire drawing, or spraying treatments. They are strong and moderately heavy, weighing about 1.5 - 2.5 kg, and are rust-proof, aging-resistant, and have a good appearance, often displaying the natural metal color or a glossy finish. However, aluminum alloy chair legs are more expensive, costing about 2 - 4 times that of nylon legs, and may have defects such as air holes and shrinkage cavities during the die-casting process, which can affect strength. Therefore, it is important to choose products from reputable manufacturers. For individuals weighing over 100 kg, aluminum alloy legs with reinforcing ribs, paired with TUV Class 4 gas cylinders, offer greater stability.
