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Armox® 370T Class 1

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    General Product Description

    Rolled homogeneous armor for vehicles.

    Armox® 370T Class 1 is a rolled homogeneous armor plate (RHA) that combines good resistance to penetration with excellent toughness.

    Benefits of Armox® 370T Class 1 include:

    • Market-leading steel protection
    • Superior workshop properties
    • Optimized solutions
    • Expertise in ballistic protection from SSAB

    Armox® 370T Class 1 is not intended for further heat treatment.

    Mechanical Properties

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      Thickness
      (inmm)      		 Hardness
      (HBW)      		 Yield strength Rp0.2
      (min ksiMPa)      		 Tensile strength Rm
      (ksiMPa)      		 Elongation A5
      (min %)      		 Elongation A50
      (min %)
      0.118 - 0.1533.0 - 3.9 380 - 430 1451000 166 - 1951150 - 1350 8 8
      0.157 - 0.2324.0 - 5.9 380 - 430 1451000 166 - 1951150 - 1350 10 10
      0.236 - 0.7836.0 - 19.9 380 - 430 1451000 166 - 1951150 - 1350 10 12
      0.787 - 1.57020.0 - 39.9 340 - 390 130900 152 - 1811050 - 1250 11 13
      1.575 - 2.358040.0 - 59.9 300 - 350 123850 137 - 166950 - 1150 12 14
      2.362 - 3.93760.0 - 100.0 300 - 350 — — — —
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        Mechanical Testing

        Brinell hardness test according to EN ISO 6506-1 on each heat treatment individual.

        Charpy impact test according to EN ISO 148 on each heat and thickness from 0.236".

        Tensile test according to EN ISO 6892 on each heat and thickness under 0.783".

        Ultrasonic testing

        According to EN 10160 Class E3S3 for thicknesses up to 3.149" and E1S2 for > 3.149".

        Impact Properties

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          Thickness
          (inmm)          		 Min impact energy, transverse test,
          Charpy V 0.393x0.393" test specimen 1)
          0.118 - 0.7833.0 - 19.9 15 ft-lbs / -40 °F20 J / -40 °C
          0.787 - 3.93720.0 - 100.0 30 ft-lbs / -40 °F40 J / -40 °C
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            Thickness
            (inmm)
            0.118 - 0.7833.0 - 19.9
            Min impact energy, transverse test,
            Charpy V 0.393x0.393" test specimen 1)
            15 ft-lbs / -40 °F20 J / -40 °C
            Thickness
            (inmm)
            0.787 - 3.93720.0 - 100.0
            Min impact energy, transverse test,
            Charpy V 0.393x0.393" test specimen 1)
            30 ft-lbs / -40 °F40 J / -40 °C

            1) Average of three tests. Transverse to rolling direction. Single value min. 70% of specified average. For plate thicknesses under 0.472" sub-size Charpy-V specimen are used. The specified minimum value is then propotional to the specimen cross-section.

            Chemical Composition (heat analysis)

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              C *)
              (max %)              		 Si *)
              (max %)              		 Mn*)
              (max %)              		 P
              (max %)              		 S
              (max %)              		 Cr*)
              (max %)              		 Ni*)
              (max %)              		 Mo*)
              (max %)              		 B*)
              (max %)
              0.32 0.40 1.20 0.010 0.003 1.0 1.80 0.70 0.005
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                The steel is grain-refined. *) Intentional alloying elements.

                Tolerances

                More details are given in SSAB brochure Armox® Guarantees or on www.ssab.com.

                Thickness

                Tolerances according to Armox® Thickness Guarantees.

                Armox® Guarantees meet the requirements of EN 10029 Class C, but offers narrower tolerances.

                Length and Width

                Tolerances conform to EN 10029 or to SSAB´s standard after agreement.

                Dimensional tolerances for plate with mill edge according to special agreement. 

                Shape

                Tolerances according to EN 10029.

                Flatness

                Tolerances according to Armox® flatness guarantees, which are more restrictive than EN 10029 Class N (steel type L).

                Surface Properties

                According to EN 10163-2 Class B Subclass 3.

                Delivery Conditions

                The delivery condition is QT (Quenched and Tempered).

                Delivery requirements can be found in SSAB’s brochure Armox® Guarantees or www.ssab.com.