Weathering Steel Plate

SPA-H/09CuPCrNi-A Corten Steel Plate

Corten steel plate SPA-H and 09CuPCrNi-A for containers, architecture and landscape applications with decorative rust finish.

SPA-H (JIS G3125) and 09CuPCrNi-A are the grades behind most corten-clad buildings and shipping containers: atmospheric corrosion resistance several times that of carbon steel, plus that rust-brown finish architects keep asking for by name.

Grades and Standards

  • JIS G3125 SPA-H
  • GB/T 4171 09CuPCrNi-A (corten-A class), 09CuPCrNi-B (corten-B class)

Sizes and Supply

  • Thickness 2-50 mm, widths 1000-2500 mm
  • Slim panel sizes for facades, full plates for container and wagon repair

Quality Documents

EN 10204 3.1 MTC per heat. For architectural work, surface selection matters as much as chemistry - we help you choose the starting surface that weathers evenly.

Where This Plate Goes

  • Container structures and repair
  • Architectural facades and cladding
  • Railway rolling stock
  • Garden edging, planters and outdoor features

Questions Buyers Ask

Q: Can the rust be accelerated for a new facade? A: Yes - controlled wet-dry treatments bring the finish forward in days instead of months. Ask for the process note with your order.
Q: Which welding consumables? A: Weathering-matched fillers keep the welds fading the same color as the parent plate - we list them with the quote.
Tell us panel dimensions and finish intent; corten orders are as much about surface as steel.