ASTM_Corten_A_steel_plate

    ASTM_Corten_A_steel_plate

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    Corten A Steel Description

    ASTM Corten A steel grade is a hot rolled products of structural steels in technical delivery conditions with improved atmospheric corrosion resistance.The steel grade CortenA is according to ASTM standard which with the yield strength of 355MPa and the tensile strength of 470-630MPa.Corten-A steel was first used in buildings in 1958 because it has anti-corrosion properties. Then Corten-A especially in China and Japan was widely used for bridges, trains, cars, trucks and industrial facilities and so on.

     

    Corten A Steel Delivery state

    Hot Rolled, Cold Rolled, Normalized, Quenched, Tempering, Thermal Mechanical Control Process (TMCP), Electroslag Remelting Technical, HIC test.

    • Corten A Steel Application

      COR-TEN A is a strip mill product. ASTM Corten A is mainly used for the manufacture of container, rolling stock, oil rigs, harbor construction, oil platforms and other structural parts containing hydrogen sulfide corrosive media in petrochemical equipment.The chemical composition of COR-TEN A has been designed to provide a relative resistance against atmospheric corrosion, in particular for urban environments. It can therefore be used even without painting; in this case a thin layer of stable oxides will be formed, thus preventing further corrosion inside.

      Corten A is 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 facials.Corten A is not recommended in heavy load bearing applications – in this case Corten B or S355J2W should be considered.

      The top layer of Corten A 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.

      The mechanical characteristics and the resistance against atmospheric corrosion make this steel the best product for the fabrication of agricultural vehicles and railway wagons, bridges, water pipes, fans, chimneys and boilers and outdoor sculptures.

     

    Corten A steel Chemical Composition Analysis

    Grades C
    max
    Si Mn P S
    max
    Cr Ni Cu Nb+V+Ti
    CortenA 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 -
     

    Corten A steel Mechanical Properties

    At room temperature for plates ≥3mm in thickness (transverse test specimans, according to EN 10002). Requirements to hot rolled plates ≤3mm in thickness according to EN 10025-5.

    Grade Permissible yield point
    ratio
    Yield Strength
    MPa(min)
    Tensile Strength
    MPa
    Elongation
    % (min)
    Bend
    Corten
    A
    - 355 470-630

    20

    1t

     

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  • 1 Mpa = 1N/mm2 These characteristics are guaranteed in the longitudinal direction; increases by approximately 20 N/mm2 in the transverse direction.

    In case of cold rolled material the yield point is min. 310 Mpa and the tensile strength min. 445 MPa. Furthermore cold rolled sheets 3mm in thickness made of steel grade COR-TEN A-F for increased demand to the cold formability is available.

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