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
    (mmin)
    Hardness
    (HBW)
    Yield strength Rp0.2
    (min MPaksi)
    Tensile strength Rm
    (MPaksi)
    Elongation A5
    (min %)
    Elongation A50
    (min %)
    4.0 - 12.00.157 - 0.472 500 - 550 1225178 1500 - 1850218 - 268 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 6 mm.

      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
        (mmin)
        Min impact energy for transversal testing,
        Charpy V 10x10 mm test specimen 1)
        4.0 - 12.00.157 - 12.0 27 J / -40 °C20 ft-lbs / -40 °F
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          Thickness
          (mmin)
          4.0 - 12.00.157 - 12.0
          Min impact energy for transversal testing,
          Charpy V 10x10 mm test specimen 1)
          27 J / -40 °C20 ft-lbs / -40 °F

          1) Average of three tests. Transverse to rolling direction. Single value min. 70% of specified average. For plate thicknesses under 12 mm sub-size Charpy-V specimen are used. The specified minimum value is then propotional to the specimen cross-section.

          Chemical Composition (ladle 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.