ELI5: Explain Like I'm 5

Weathering steel

Weathering steel is a special type of steel that is very good at dealing with the weather outside. It's like a tough super hero for buildings that live outside in the rain, snow, and hot sun.

Ordinary steel is vulnerable to rust and corrosion when it gets wet or exposed to air. Weathering steel is different, it’s made with certain elements like copper, phosphorus, nickel, and chromium to help it withstand Mother Nature. These elements create a thin layer called rust or patina, that protects the steel underneath from further damage. The rust acts like armor and makes the steel very strong and durable.

People like to use weathering steel for building structures like bridges, statues, and even art pieces, because it can withstand severe weather like heavy rain and strong winds, as well as exposure to sunlight. Instead of rusting away, weathering steel gets tougher over time, which makes it a really good choice for outdoor structures that need to last a long time.
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