ASTM A131 Gade AH/DH 32

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    General Product Description

    ASTM A131 Grades AH32, and DH32 are higher-strength structural steels with a minimum specified yield strength of 46 ksi and specified minimum Charpy V-notch impact toughness properties.

    Applications

    Typical applications include shipbuilding and mobile offshore drilling units and structures.

    Available Dimensions

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      Grade Product type Thickness
      (in)
      Width
      (in)
      Length
      (in)
      AH32 Plate 0.251 - 1.50 72 - 120 240 - 1020
      DH32 Plate 0.251 - 1.50 72 - 120 240 - 1020
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        Width: Please inquire for available plate widths for thicknesses less than 0.250 in. For plate thicknesses of 0.250 in. or greater inquire for widths less than 72 in. or over 120 in.

        Length: Please inquire for plate lengths greater than the listed maxima or less than the listed minima.

        Mechanical Properties

        Tensile testing is performed in the transverse direction.

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          Grade Thickness
          (in)
          Yield strength
          (min ksi)
          Tensile strength
          (ksi)
          Elongation in 2"
          (min %)
          Elongation in 8" 1)
          (min %)
          Grade AH36 0.251 - 1.50 46 64 - 85 22 19
          Grade DH32 0.251 - 1.50 46 64 - 85 22 19
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            1) For plates less than 5/16 in. in thickness , a deduction from the specified 8” elongation percentage shall be made in accordance with ASTM A6 Elongation Requirement Adjustments.

            Impact Properties

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              Grade Thickness
              (in)
              Test temperature
              (°F)
              Min Longitudinal Average Energy 1)
              (ft-lbs)
              Min transverse average energy 1)
              (ft-lbs)
              AH32 0.251 - 1.50 32 23 16
              DH32 0.251 - 1.50 -4 23 16
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                1) Specimen orientation at the option of the manufacturer unless otherwise specified in the order.

                No more than one value below the specified minimum average energy, but no less than 70% of the specified minimum average energy value.

                Minimum average energy for full-size specimens. Refer to ASTM A131 for sub-size specimen energy requirements.

                Carbon Equivalent

                (wt %)
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                  Grade AH32 DH32
                  Thickness (in) 0.251 - 1.50 0.251 - 1.50
                  CEV (max %) 0.36 0.36
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