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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
      (inmm)      		 Width 1)
      (inmm)      		 Length 1)
      (inmm)
      Grade AH40 Plate 0.1875 - 1.574.762 - 39.9 72 - 1201800 - 3050 240 - 10206100 - 25910
      Grade DH40 Plate 0.1875 - 1.574.762 - 39.9 72 - 1201800 - 3050 240 - 10206100 - 25910
      Grade EH40 Plate 0.1875 - 1.574.762 - 39.9 72 - 1201800 - 3050 240 - 10206100 - 25910
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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
          (inmm)          		 Yield strength
          (min ksi)          		 Tensile strength
          (ksi)          		 Elongation A5 1)
          (min %)
          Grade AH40 0.1875 - 1.574.762 - 39.9 57 74 - 94 22
          Grade AH40 0.1875 - 1.574.762 - 39.9 57 74 - 94 22
          Grade EH40 0.1875 - 1.574.762 - 39.9 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
              (inmm)              		 Test temperature
              (°F)              		 Min Longitudinal Average Energy 1)
              (ft-lbs)              		 Min transverse average energy 1)
              (ft-lbs)
              Grade A40 0.1875 - 1.574.762 - 39.9 32 29 19
              Grade DH40 0.1875 - 1.574.762 - 39.9 -4 29 19
              Grade EH40 0.1875 - 1.574.762 - 39.9 -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 (inmm) 0.1875 - 1.574.762 - 39.9 0.1875 - 1.574.762 - 39.9 0.1875 - 1.574.762 - 39.9
                  CEV 1) (max %) 0.40 0.40 0.40
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                    1) Carbon equivalent requirements for TMCP condition of supply only.