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ASTM A709 Grade HPS 50W

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    General Product Description

    The ASTM A709 is the Standard Specification for Structural Steel for Bridges and encompasses carbon, high-strength low-alloy, and quenched and tempered alloy steels used as structural plates in the construction of bridges. Of the five grades SSAB offers, three grades have an ASTM G101 enhanced Atmospheric Corrosion Resistance Index of ≥6.0.

    Available Dimensions

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      Grade Thickness
      (inmm)      		 Width
      (inmm)      		 Length
      (inmm)
      HPS 50W 0.50 - 2.0013 - 50.8 72 - 1201800 - 3050 240 - 12006100 - 30480
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        Width:  Please inquire for plate widths less than 72 in. and over 120 in. Inquire for widths greater than 96 in. for thicknesses less than 0.250 in. 

        Length: Please inquire for plate lengths greater than the listed maxima. Plate length may be limited by maximum individual plate weight of 66,000 lbs. Plate length maximum of 960 in. for thicknesses less than 7/16 in. 

        Thickness: Please inquire for thicknesses greater than 2.00 in.

        Mechanical Properties

        Tensile testing is performed in the transverse direction according to ASTM A370 requirements.

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          Grade Thickness
          (inmm)          		 Yield strength 1)
          (min ksi)          		 Tensile strength
          (min ksi)          		 Elongation in 2" 2)
          (min %)          		 Elongation in 8" 2)
          (min %)
          HPS 50W 0.50 - 2.0013 - 50.8 50 70 21 18
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            1) Yield strength measured as 0.2% offset or 0.5% extension under load.

            2) For plates wider than 24 in, the elongation requirement is reduced by two percentage points. See elongation requirement adjustments in the Tension Test section of Specification ASTM A6.

            Impact Properties

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              Grade Thickness
              (inmm)              		 Min Longitudinal Average Energy 1)
              (ft-lbs)              		 Min Longitudinal Individual Value 1)
              (ft-lbs)              		 Zone 1 Test Temp Zone 2 Test Temp Zone 3 Test Temp
              HPS 50WT 0.50 - 2.0013 - 50.8 20 — 10 oF 10 oF 10 oF
              HPS 50WF 0.50 - 2.0013 - 50.8 30 24 10 oF 10 oF 10 oF
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                1) CVN impact testing in accordance with ASTM A673.
                Please inquire for orders requiring CVN impact testing.

                Chemical Composition

                (Heat Analysis, wt. %, maximum unless noted)
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                  Type Thickness (inmm) C
                  (max wt %)                  		 Mn
                  (wt %)                  		 P
                  (max wt %)                  		 S
                  (max wt %)                  		 Si
                  (wt %)                  		 Altot
                  (wt %)                  		 V
                  (wt %)                  		 N
                  (max wt %)                  		 Cr
                  (wt %)                  		 Ni
                  (wt %)                  		 Mo
                  (wt %)                  		 Cu
                  (wt %)
                  HPS 50W 0.50 - 2.0013 - 50.8 0.11 0.10 - 1.35 0.020 0.006 0.30 - 0.50 0.010 - 0.040 0.04 - 0.08 0.015 0.45 - 0.70 0.25 - 0.40 0.02 - 0.08 0.25 - 0.40
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                    Sulfur: The steel shall be calcium treated for sulfide shape control.

                    Tolerances

                    Thickness, width, and length tolerances are in accordance with ASTM A6 requirements. The flatness tolerance for as-supplied product is halfstandard ASTM A6 tolerance.

                    Fabrication and Other Recommendations

                    Please contact SSAB for technical support for welding, thermal cutting, and forming assistance, if needed.

                    Supplementary Requirements

                    Please see the ASTM A709 standard for supplementary requirements considered suitable for use with this specification.

                    Please inquire for orders requiring supplementary requirements.