Corten steel, also known as weathering steel, tends to be more expensive than standard carbon steel due to its unique properties and the alloying elements used in its composition. The pricing can vary based on factors such as market demand, thickness, and supplier pricing. While the initial cost of Corten steel may be higher, it is often considered a cost-effective option in the long term, as it requires less maintenance and has a longer lifespan due to its corrosion-resistant characteristics. Additionally, the aesthetic appeal of its rusted appearance can add value in architectural and artistic applications.

Corten steel is not completely water-resistant, but it does possess excellent corrosion resistance due to its unique alloy composition, which allows it to develop a protective layer of rust when exposed to the elements. This patina forms a barrier that protects the underlying steel from further corrosion, effectively reducing deterioration over time. However, while Corten steel can withstand moisture and harsh weather conditions better than standard carbon steel, it is still susceptible to corrosion if not properly maintained or if exposed to prolonged wet conditions without adequate airflow. Therefore, while it offers better resistance to water and environmental factors than regular steel, it is not entirely water-resistant and may require periodic maintenance in certain applications.

Corten steel is widely used for various applications due to its unique weathering properties and aesthetic appeal. It is popular in architecture for building facades, roofing, and decorative elements, as it develops a distinctive rust patina that enhances its visual character. Additionally, artists often choose Corten steel for sculptures and public art installations, while landscapers use it for planters, retaining walls, and garden edging, providing a durable and striking feature in outdoor spaces. Its strength and corrosion resistance also make it suitable for structural components like bridges and outdoor furniture, as well as fencing and barriers in residential and commercial settings, combining functionality with a rustic aesthetic.

Corten steel is known for its durability and long lifespan, often lasting between 25 to 50 years or even longer, depending on environmental conditions and maintenance. The protective rust layer that forms on its surface helps prevent further corrosion, making it more resilient in harsh weather and industrial environments. However, its longevity can be affected by factors such as exposure to moisture, pollutants, and salt, which may accelerate corrosion if not managed properly. Regular maintenance, such as cleaning and inspections, can further enhance its lifespan, ensuring that Corten steel structures maintain their integrity and aesthetic appeal over time.