Ramor® 550

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    General Product Description

    The ballistic protection steel with extra-high hardness.

    Ramor® 550 is a ballistic protection steel of extra-high hardness, available in thicknesses of 3.0 ‑ 15.0 mm (0.118‑0.591″) and hardnesses of 540‑600 HBW.

    Ramor® 550 is available as cut-to-length sheet in thicknesses of 3.0 ‑ 6.0 mm (0.118‑0.236″) and as plate in thicknesses of 6.0 ‑ 15.0 mm (0.236‑0.591″). Delivered in quenched condition, Ramor® 550 is not intended for further heat treatment.

    Mechanical Properties

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      Thickness
      (inches)
      Hardness
      (HBW)
      Ramor® 550 0.118 - 0.590 540 - 600
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        Mechanical Testing

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

        Hardness is measured on a milled surface 0.012 - 0.079" below plate surface.

        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 %)
          0.36 0.70 1.5 0.015 0.010 1.50 2.50 0.80 0.005
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            The steel is grain-refined. Phosphorous and sulphur are not intentionally alloying elements.

            Tolerances

            More details are given on www.ssab.com.

            Thickness

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              Product Type Thickness
              (inches)
              Tolerance
              (inches)
              Sheet 0.118 - 0.157 - 0.0 / + 0.0142
              Sheet 0.158 - 0.197 - 0.0 / + 0.0157
              Sheet 0.197 - 0.236 - 0.0 / + 0.0165
              Plate 0.236 - 0.311 - 0.0 / + 0.0315
              Plate 0.315 - 0.590 - 0.0 / + 0.0394
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                Length and Width

                Sheets are delivered with mill edges cut as standard.

                • Tolerances conform to EN 10 051 or to SSAB´s standard after agreement.

                Plate delivered according to SSAB’s dimension program.

                • Tolerances conform to EN 10 029 or to SSAB’s standard after agreement.
                • Dimensional tolerances for plate with mill edge according to special agreement. 

                Shape

                Tolerances according to EN 10029 for plate and according to EN 10051 for sheet.

                Flatness

                Tolerances according to SSAB’s flatness tolerances which are more restrictive than EN 10 029 Class N (steel type L) and EN 10 051.

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                  Product Type 39.370" ruler
                  (inches)
                  Sheet 0.236
                  Plate 0.236
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                    Surface Properties

                    According to EN 10163-2 Class B Subclass 3.

                    Delivery Conditions

                    Ramor is delivered in quenched condition.