Corten A Weathering Steel

Corten A – a weather resistant steel created by alloying copper, chromium and nickel. In addition to this, 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.

The top layer of the material reacts with atmospheric elements to form a rust coloured protective layer which not only makes the steel virtually maintenance free but also provides a pleasing and consistent finish.

 

Grades & Equivalents

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Mechanical Properties

GradeThickness (mm)
Strip Products
Plate ProductsYield Strength
Rel N/mm²
Minimum
Tensile Strength
Rm N/mm²
Minimum
Elongation
A50 %
Minimum
Corten A2-126-1234548520

Chemical Composition of Corten A

  
C0.15
Si0.25/0.75
Mn0.20/0.50
P0.07/0.15
S0.030
Al0.015/0.06
Cu0.25/0.55
Cr0.50/1.25
Ni0.65