: Most common for thin sheets used in roofing, siding, and decorative panels. ASTM A588 : The standard for heavier plates (typically
: Often used for lighter structural work and architectural features. What Is the Thickness of Corten Steel Cladding?
and thicker) used in structural applications like bridges or retaining walls.
Buying Corten steel (weathering steel) requires understanding its unique chemical properties and how it interacts with the environment. Unlike standard carbon steel, Corten develops a stable, protective rust-like patina that eliminates the need for painting and significantly extends its lifespan.
While "Corten" is a trademarked name, several ASTM (American Society for Testing and Materials) standards are considered equivalent for most projects: