AAR A516 Grade 70

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    General Product Description

    AAR ASTM A516 Grade 70 is a produced in accordance with the supplementary requirements of the AAR Specifications for Tank Cars for use in tank car heads, shells, and sumps.

    Dimension Range

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      Grade Product type Thickness
      (inchesmm)
      Width
      (inchesmm)
      Length
      (inchesmm)
      AAR A516 70 As-rolled 0.188 - 1.504.78 - 38.1 60 - 1201500 - 3050 240 - 10206100 - 25910
      AAR A516 70 Normalized 0.250 - 0.374 1)6.35 - 9.50 1) 60 - 1201500 - 3050 240 - 6006100 - 15200
      AAR A516 70 Normalized 0.375 - 2.0009.52 - 50.80 60 - 1201500 - 3050 240 - 6006100 - 15200
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        1) Inquire for availability.

        Mechanical Properties

        Tensile testing is performed in the transverse direction in accordance with ASTM A20. Specimens for tensile testing are prepared from material in the condition specified for plate use such as as-rolled, normalized, or post weld heat treated. The required tensile property requirements are tablulated below:

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          Grade Thickness
          (inchesmm)
          0.2% YS
          (ksi)
          UTS
          (ksi)
          Elongation in 2"
          (min %)
          Elongation in 8"
          (min %)
          AAR A516 70 0.188 - 2.0004.78 - 50.80 38 70 - 90 21 17
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            Impact Properties

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              Grade Min. impact energy for longitudinal testing,
              Charpy V 0.393x0.393" test specimen 1)
              AAR A516 70 15 ft-lbs / -50 °F 2)
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                Grade
                AAR A516 70
                Min. impact energy for longitudinal testing,
                Charpy V 0.393x0.393" test specimen 1)
                15 ft-lbs / -50 °F 2)

                1) Inquire for requirements at other temperatures.

                2) For normalized plates, inquire for impact energy requirements in as-rolled condition.

                Chemical Composition

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                  Grade C 1)
                  (max wt %)
                  Mn 1)
                  (wt %)
                  P
                  (max wt %)
                  S
                  (max wt %)
                  Si
                  (wt %)
                  Al 2)
                  (wt %)
                  Nb
                  (max wt %)
                  Ti
                  (max wt %)
                  V
                  (max wt %)
                  N
                  (max wt %)
                  B
                  (max wt %)
                  Ni
                  (max wt %)
                  Mo
                  (max wt %)
                  Cu
                  (max wt %)
                  Cr
                  (max wt %)
                  AAR A516 70 0.23 0.85 - 1.20 0.25 0.015 0.15 - 0.40 0.015 - 0.060 0.020 0.020 0.030 0.010 0.0005 0.40 0.12 0.35 0.30
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                    1) For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.06% above the specified Mn max. is permitted, up to a max. of 1.50%.

                    2) A minimum of 0.015% must be acid-soluble.

                    Tin (Sn) maximum of 0.020.

                    Cu + Ni + Cr + Mo max 0.65.

                    Nb + V + Ti max 0.11.

                    Ti/N ratio max 4:1.

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                      Thickness (inchesmm) 0.188 - 2.0004.78 - 50.80
                      Maximum CEV (wt %) 0.45
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                        Thickness (inchesmm)
                        Maximum CEV (wt %)
                        0.188 - 2.0004.78 - 50.80
                        0.45