Based in Hamilton, New Zealand, Latham Steel is a trusted partner for industrial and architectural projects, providing high-quality materials with a deep understanding of local needs. We proudly supply ASTM A606 Type 4 Corten steel sheet and plate, a material celebrated for its exceptional durability and distinctive, self-protecting weathered finish. Sourced from leading mills, our inventory is ready to support builders, fabricators, and artists across the country, offering a unique blend of rugged strength and evolving aesthetic appeal for innovative and long-lasting creations.
The specific composition of this steel, including elements like copper, chromium, and nickel, is what allows it to form a tight, adherent rust patina when exposed to the weather. This layer acts as a barrier, dramatically slowing further corrosion and eliminating the need for painting in many applications. Mechanically, it meets the robust standards of ASTM A606 Type 4, providing excellent strength and toughness that stands up to demanding structural and outdoor environments, making it a truly maintenance-friendly material.
Grade :Â ASTM A606 Type 4 Corten Steel Plates
Standard :Â ASTM A606 / ASME SA606
Width : 48″ – 96″
Length :Â UP TO 480″
Thickness : 3/16″ – 3/4″
Type :Â Corten Steel / High-Strength Low-alloy Structural Steel
Process :Â Hot-Rolled (HR)
| Grade ASTM A606 TYPE 4 | C | Mn | Ph |
| 0.22-0.26 | 1.25-1.3 | 0.04-0.06 |
| Grade | Tensile Strength ksi | Yield2% Offset ksi |
| ASTM A606 TYPE 4 | 50 | 70 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The uses for this distinctive steel are incredibly diverse. Its classic weathered appearance makes it a favourite for architectural cladding, sculpture, and landscape features like retaining walls and bridge facades, where it develops a rich, earthy hue over time. Beyond its good looks, its high strength-to-weight ratio and corrosion resistance make it ideal for structural components in bridges, shipping containers, and heavy-duty equipment. From a modern building’s stunning exterior to an unassuming but critical piece of industrial machinery, this steel delivers both form and function.
Latham Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hamilton, New Zealand.
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