SSAB Laser® 420ML Plus

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General Product Description

SSAB Laser® 420ML Plus is an advanced thermomechanically rolled weldable fine grain steel for laser cutting and cold forming. The SSAB guarantee for flatness, both before and after laser cutting, is ≤ 3 mm/m deviation.

SSAB Laser® 420ML Plus meets and exceeds the requirements of S420ML in EN 10025-4. Dual certification and CE marking are available upon request.

Dimension Range

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    Delivery form Thickness
    (mmin)
    Width
    (mmin)
    Length
    (mmin)
    SSAB Laser® 420ML Plus Hot rolled plate 10.0 - 25.00.394 - 0.984 1000 - 330039.37 - 129.9 2000 - 1500078.74 - 590.55
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      Mechanical Properties

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        Yield strength ReH
        (min MPa)
        Tensile strength Rm
        (MPa)
        Elongation A5
        (min %)
        Min. inner bending radius for a 90° bend 1)
        (x t)
        420 520 - 680 19 1.0
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          The mechanical properties are tested transverse to the direction of rolling.

          1) The bending guarantee is valid for both longitudinal and transverse direction.

          Impact Properties

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            Min. impact energy for longitudinal testing,
            Charpy V 10x10 mm test specimens
            40 J / -50 °C
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              Min. impact energy for longitudinal testing,
              Charpy V 10x10 mm test specimens
              40 J / -50 °C
              Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 6mm. The specified minimum value corresponds to a full-size specimen.

              Chemical Composition (heat analysis)

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                C
                (max %)
                Si
                (max %)
                Mn
                (max %)
                P
                (max %)
                S
                (max %)
                CEV
                (max )
                0.12 0.03 1.6 0.020 0.015 0.38
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                  All SSAB Laser® steels are aluminum-killed (Al ≥ 0.015%) and grain-refined. Additionally, niobium (Nb), vanadium (V), titanium (Ti) and/or boron (B) may be used as single alloying element or in any combination.

                  Tolerances

                  All SSAB Laser® products are delivered with SSAB Laser® tolerances, which means increased guarantees compared to corresponding EN standards. Detailed information is available on ssab.com.

                  Thickness

                  SSAB Laser® tolerances correspond to ¾ of EN 10029 as default.

                  Width

                  -0/+4-10mm depending on the thickness.

                  Length

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                    Nominal length
                    (mm)
                    Tolerance
                    (mm)
                    2000 ˂ l ≤ 10000 - 0 / + 15
                    10000 ˂ l ≤ 15000 - 0 / + 20
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                      Nominal length
                      (mm)
                      2000 ˂ l ≤ 10000
                      Tolerance
                      (mm)
                      - 0 / + 15
                      Nominal length
                      (mm)
                      10000 ˂ l ≤ 15000
                      Tolerance
                      (mm)
                      - 0 / + 20

                      Flatness

                      ≤ 3 mm/m flatness deviation for both delivery condition and laser cut parts.

                      Surface Properties

                      According to EN 10163-2 Class A, Subclass 3.

                      Delivery Conditions

                      Thermomechanically rolled.

                      Surface and edge condition

                      Hot rolled plate: as rolled surface condition and cut edges as default.

                      Fabrication and Other Recommendations

                      All SSAB Laser® products have been optimized for laser cutting, cold forming and welding.

                      SSAB Laser® ML Plus products are thermomechanically rolled weldable fine grain steels for laser cutting and cold forming. It is not suited for heat treatments at temperatures above 580°C, since the material then may lose its guaranteed properties.

                      For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.

                      Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.

                      Contact Information

                      www.ssab.com/contact