CORTEN A – Atmospheric Corrosion-Resistant Steel Plate Corten A is a weathering steel that develops a protective oxide coating—known as a patina—when exposed to the atmosphere. This self-forming layer prevents further corrosion, eliminating the need for paint or external coatings. With added phosphorus for enhanced corrosion resistance, it’s widely used in architectural and aesthetic applications where both durability and visual appeal are important. Key Highlights: Naturally forms a rust-like patina for long-term corrosion resistance Low maintenance with no need for painting Enhanced weldability and cold-forming capabilities Clean, earthy finish ideal for modern designs Typical Applications: Architectural facades and cladding Public art, sculptures, and landscaping features Decorative fencing, screens, and signage Outdoor furniture and structural design elements