ABS Grade AH40, DH40, EH40

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    General Product Description

    ABS Grades AH40, DH40, and EH40 are higher-strength structural steels with a minimum specified yield strength of 57 ksi and specified minimum Charpy Vnotch 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 1)
      (in)
      Length 1)
      (in)
      Grade AH40 Plate 0.1875 - 1.57 72 - 120 240 - 1020
      Grade DH40 Plate 0.1875 - 1.57 72 - 120 240 - 1020
      Grade EH40 Plate 0.1875 - 1.57 72 - 120 240 - 1020
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        1) Please inquire for plate dimensions outside the noted range.

        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 A5 1)
          (min %)
          Grade AH40 0.1875 - 1.57 57 74 - 94 22
          Grade AH40 0.1875 - 1.57 57 74 - 94 22
          Grade EH40 0.1875 - 1.57 57 74 - 94 22
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            1) See ABS Rules for elongation requirements for alternative tensile specimens.

            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)
              Grade A40 0.1875 - 1.57 32 29 19
              Grade DH40 0.1875 - 1.57 -4 29 19
              Grade EH40 0.1875 - 1.57 -40 29 19
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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 miniminum average energy but no less than 70% of the specfied minimum average energy value.

                Minimum average energy for full-size specimens. Refer to ABS Rules for sub-size specimen energy requirements.

                Carbon Equivalent

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                  Grade Grade AH40 Grade DH40 Grade EH40
                  Thickness (in) 0.1875 - 1.57 0.1875 - 1.57 0.1875 - 1.57
                  CEV 1) (max %) 0.40 0.40 0.40
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                    1) Carbon equivalent requirements for TMCP condition of supply only.