While "Corten" is a trademarked name, several ASTM (American Society for Testing and Materials) standards are considered equivalent for most projects:

: Most common for thin sheets used in roofing, siding, and decorative panels. ASTM A588 : The standard for heavier plates (typically

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.

: 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.