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Armox® 520T

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    General Product Description

    High hardness armor with extraordinary toughness properties.

    Armox® 520T is the world’s toughest protection plate, having nominal 520 HBW hardness, for use in vehicles, buildings and many more applications.

    Benefits of Armox® 520T include: 

    • Market-leading steel protection
    • Superior workshop properties
    • Optimized solutions
    • Perfect hardness/toughness balance, for combined penetration and blast protection
    • Expertise in ballistic protection from SSAB

    It offers vehicle designers new ways to increase protection using lighter weight designs.

    Armox® 520T 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 %)
      0.157 - 0.4724.0 - 12.0 500 - 550 1781225 218 - 2681500 - 1850 8 10
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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.

        Ultrasonic testing

        According to EN 10160 Class E3S3.

        Impact Properties

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          Thickness
          (inmm)          		 Min impact energy, transverse test,
          Charpy V 0.393x0.393" test specimen 1)
          0.157 - 12.04.0 - 12.0 20 ft-lbs / -40 °F27 J / -40 °C
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            Thickness
            (inmm)
            0.157 - 12.04.0 - 12.0
            Min impact energy, transverse test,
            Charpy V 0.393x0.393" test specimen 1)
            20 ft-lbs / -40 °F27 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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                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

                According to SSAB´s dimension program.

                • 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.