Waterproof Steel Light

Corten steel light boxes are landscaping and signage installations made primarily of Corten steel (CORTEN steel) and integrated with LED lighting systems. Thanks to the unique reddish texture and perforated finish of Corten steel, they present an industrial and sculptural aesthetic during the day, while at night, the perforated patterns allow the passage of warm or cool light, creating a strong visual contrast. This combination of "rust and light" makes them both a functional light fixture and a landscape element of great artistic value.

Main Materials and Performance

Base Material Selection: The main panel uses Corten steel sheets of grades such as Q235NH and O9CuPCrNi-A (CORTEN-A), with a common thickness of 2.0 mm to 4.0 mm. It is recommended to use galvanized steel or 304 stainless steel sheets for the frame and back panel of the light box to improve structural stability and prevent internal corrosion.

Oxidation Mechanism: By adding alloying elements such as copper, chromium, and nickel, weathering steel naturally forms a dense and stable rust-red oxide film on its surface. This oxide layer effectively blocks the penetration of corrosive agents, providing corrosion protection through the rust itself. Its weather resistance is 2 to 8 times greater than that of ordinary carbon steel.

Durability: Once a stable oxide layer has formed, the structure's lifespan can reach 20-30 years or more outdoors, without requiring additional coating maintenance.

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