Duroxite® 100

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    General Product Description

    Duroxite® 100 is manufactured by depositing chromium-rich, abrasion-resistant materials on a mild steel base plate using a traditional arc welding process. The hardfacing overlay plate is suitable for severe abrasive wear and moderate to low impact applications. The multiple-layer overlay is also capable of maintaining full wear resistance up to 350 ºC (660ºF) and the typical surface hardness of 55 HRC at elevated temperatures up to 540°C (1000°F). Duroxite® 100 is available in single layers or multiple layers up to 20 mm (3/4”) in overlay thickness.

    Key Benefits

    • Same wear resistance guaranteed from surface down to 75% of the overlay
    • Optimal carbide composition to provide good combination of wear resistance and homogenous bonding
    • Good formability due to staggered cracking pattern on overlay surface

    Typical Applications

    Duroxite® 100 is widely used in the mining, power generation, cement, dredging, steel production, waste handling, glass production, and pulp and paper industries. Some specific applications include:

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      Mining Chutes/hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators
      Cement Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers
      Dredging Dredging pipes and pumps, suction pipelines, pump discharges
      Steel Fan blade/housings, coke vibrating screen plates
      Power Coal handling chutes, coal feeder liners, crusher screen plates, classifier cones, journal liners, silo bunkers
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        Mining
        Chutes/hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators
        Cement
        Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers
        Dredging
        Dredging pipes and pumps, suction pipelines, pump discharges
        Steel
        Fan blade/housings, coke vibrating screen plates
        Power
        Coal handling chutes, coal feeder liners, crusher screen plates, classifier cones, journal liners, silo bunkers

        For more information on applications see the Duroxite® Product brochure.

        Available Dimensions

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          Standard overlay thicknesses
          Single pass
          Multiple Passes
          Metric unit Metric unit
          3 mm on 6 mm 6 mm on 6 mm
          5 mm on 8 mm 6 mm on 10 mm
          10 mm on 10 mm
          12 mm on 12 mm
          20 mm on 10 mm
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            Standard overlay thicknesses

            Single pass

            Metric unit
            3 mm on 6 mm
            Standard overlay thicknesses

            Multiple Passes

            Metric unit
            6 mm on 6 mm
            Standard overlay thicknesses

            Single pass

            Metric unit
            5 mm on 8 mm
            Standard overlay thicknesses

            Multiple Passes

            Metric unit
            6 mm on 10 mm
            Standard overlay thicknesses

            Single pass

            Metric unit
            Standard overlay thicknesses

            Multiple Passes

            Metric unit
            10 mm on 10 mm
            Standard overlay thicknesses

            Single pass

            Metric unit
            Standard overlay thicknesses

            Multiple Passes

            Metric unit
            12 mm on 12 mm
            Standard overlay thicknesses

            Single pass

            Metric unit
            Standard overlay thicknesses

            Multiple Passes

            Metric unit
            20 mm on 10 mm

            Other plate sizes and custom thicknesses can be produced upon request.

            Standard plate sizes

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              Metric unit Imperial unit
              1.2 m x 2.4 m 4" x 8"
              1.4 m x 3.0 m 4.6" x 10"
              1.5 m x 3.0 m 5" x 10"
              1.8 m x 3.0 m 6" x 10"
              2.4 m x 3.0 m 8" x 10"
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                Metric unit
                1.2 m x 2.4 m
                Imperial unit
                4" x 8"
                Metric unit
                1.4 m x 3.0 m
                Imperial unit
                4.6" x 10"
                Metric unit
                1.5 m x 3.0 m
                Imperial unit
                5" x 10"
                Metric unit
                1.8 m x 3.0 m
                Imperial unit
                6" x 10"
                Metric unit
                2.4 m x 3.0 m
                Imperial unit
                8" x 10"

                Other plate sizes and custom thicknesses can be produced upon request.

                Mechanical Properties

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                  ASTM G65 – Procedure A weight loss 2)
                  Number of overlay passes Typical surface hardness1)

                  (HRC)
                  Typical surface hardness1)

                  (HV)
                  Surface
                  (g max)
                  75 % depth of overlay 3)
                  (g max)
                  Single pass 55 - 57 590 - 630 0.25 0.25
                  Double passes 59 - 62 675 - 750 0.18 0.18
                  Triple and more passes 60 - 64 700 - 810 0.18 0.18
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                    1) Surface hardness is measured on machined flat surface just below overlay surface.

                    2) ASTM G65 - Procedure A weight loss, is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most severe test method.

                    3) ASTM G65 - Procedure A weight loss, wear test is conducted at 75% depth of the overlay materials to ensure consistently good wear resistance from the top surface through to the depth of 75% of the overlay.

                    Microstructure

                    The microstructure of Duroxite® 100 is composed of a high proportion of extremely hard primary M7C3 chromium-rich carbides with a typical hardness of 1700 HK4) dispersed evenly in a ductile eutectic austenite matrix. The volume fraction of primary carbides is maintained between 30 to 50% to provide a good combination of wear resistance and homogenous bonding.

                     

                    4)HK is the Knoop microhardness used primarily for very brittle materials.

                    Tolerances

                    Thickness

                    Overall and overlay thickness tolerances can be guaranteed within ±10% of specified thickness.

                    Flatness

                    Plate flatness tolerance can be guaranteed within ±3 mm (±1/8”) over 1.5 m (5’) plate length for plate dimensions equal to or less than 1.5 m (5’) x 3.0 m (10’). For plates greater than 1.5 m (5’) wide by 3.0 m (10’) long, the following flatness guarantees apply.

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                      Standard overlay thicknesses
                      Flatness tolerance over 1.5 m plate length,
                      Metric unit
                      Metric unit 1.8 m x 3.0 m 2.4 m x 3.0 m
                      5 mm on 8 mm 25 41
                      6 mm on 6 mm 25
                      10 mm on 10 mm 12 25
                      12 mm on 12 mm 6 16
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                        For custom sizes, please consult your local sales representative or Hardox Wearparts center for flatness guarantees.

                        Delivery Conditions

                        Duroxite® 100 is normally supplied in an as-welded condition, but can also be supplied in a ground condition upon request.

                        Fabrication and Other Recommendations

                        Welding, cutting, forming and machining

                        Recommendations can be found in the Duroxite® Product brochure, or consult your local technical support representative.

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

                        Safety precautions

                        When welding or cutting Duroxite® products, smoke is produced containing harmful fumes and gases that are chemically highly complex and difficult to easily classify. The major toxic component in the fumes and gases produced in the process is hexavalent chromium. The proper exhaust ventilation equipment and fume-extraction torches are recommended, as well as suitable protective clothing and respiratory protection for operators.