Cor-Ten A weathering steel plate

Corten A Weathering Steel Plate

When COR-TEN is exposed to the atmosphere, it develops an initial layer of rust as ordinary steel does. But, as time goes by, this early product gradually converts to a fine-textured rust (protective rust) that tightly adheres to the base metal, providing a protective layer that both protects the base metal and suppresses further corrosion.

Since its development in the U.S. in 1933, COR-TEN has been used in every field where steel is applied, such as bridges, railway vehicle and buildings. Recently, unpainted applications of COR-TEN are attracting attention as being especially suited for resource savings and environmental concerns. Another growing application of unpainted COR-TEN is in conjunction with rust stabilization treatments on bridges, building exteriors and other structures. In this way, COR-TEN helps to reduce life-cycle costs and environmental burdens in a wide range of applications.

Corten A is a weather resistant steel created by alloying copper, chromium and nickel. Corten A has added phosphorous which makes the material best suited for gas flue applications and for aesthetic facias. The material is not recommended in heavy load bearing applications – in this case Corten B or S355J2W should be considered.

  • Thickness: 6mm to 300mm,
  • Width: 1500mm to 4050mm,
  • Length: 3000mm to 15000mm
Chemical Composition of Corten A Steel
C max Si Mn. P S max Cr Ni Cu Nb+V+Ti
0.12 0.25-0.75 0.20-0.50 0.07- 0.15 0.030 0.50-1.25 0.65 0.25-0.55 -
Mechanical Properties of Corten A Steel
  Grade Permissible yield point ratio Yield Strength MPa(min) Tensile Strength MPa Elongation % (min) Bend
Corten A - 355 470-630


Equivalent Steel Grade of Corten A Steel
Europe UNI Germany France UK Sweden India Japan

Fe510 C1K1


E 36WA3





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