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Hardox

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    Hardox is a brand of wear-resistant steel manufactured by SSAB (Swedish Steel AB), a leading global producer of high-strength steel. It is renowned for its exceptional hardness and toughness, making it ideal for applications in industries where wear resistance is critical. Here are some key points about Hardox:

    1. Material Composition: Hardox steel primarily consists of low alloy steel with carbon, manganese, and other alloying elements. This composition contributes to its hardness and toughness, providing excellent resistance to wear and impact.

    2. Hardness: Hardox steel is known for its high hardness levels, typically ranging from 400 to 600 HBW (Brinell hardness). This makes it highly resistant to abrasive wear, cutting, and indentation.

    3. Applications: Hardox is widely used in industries such as mining, construction, agriculture, recycling, and transportation. It is employed in equipment and components subjected to abrasive conditions, such as dump truck bodies, buckets and excavator attachments, crushers, hoppers, and shredders.

    4. Product Range: SSAB offers various grades of Hardox steel tailored to different applications. For instance, Hardox 400 is suitable for moderate wear applications, while Hardox 500 offers higher hardness for more severe conditions. There are also specialty grades like Hardox Extreme for extreme wear resistance and Hardox Hi-Tuf for structural wear parts.

    5. Fabrication and Machinability: Despite its high hardness, Hardox steel is designed to be machinable and formable using standard methods appropriate for high-strength steel. Proper cutting and welding techniques are essential to maintain its mechanical properties.

    6. Quality and Certification: SSAB ensures consistent quality through rigorous manufacturing processes and quality control measures. Hardox steel meets international standards and is backed by SSAB’s technical support and expertise.

    7. Environmental Benefits: Using Hardox steel can lead to longer equipment lifespan and reduced maintenance costs due to its wear-resistant properties. This contributes to sustainability by minimizing material usage and reducing downtime for repairs and replacements.

    Overall, Hardox steel is a preferred choice for demanding applications where durability, strength, and resistance to wear are crucial factors in equipment performance and longevity. Its reputation for quality and performance has made it a trusted brand among industries worldwide.

  • Manufacturing Process: Hardox steel is produced through a carefully controlled quenching and tempering process. This process involves heating the steel plate to a precise temperature and then rapidly cooling it to achieve the desired hardness and toughness properties. The steel is then tempered to further refine its mechanical characteristics, ensuring uniformity and reliability in performance.

  • Variants and Specialized Grades:

    • Hardox Wear Plate: The standard range of Hardox wear plates includes grades like Hardox 400, Hardox 450, Hardox 500, Hardox 550, and Hardox 600. Each grade offers different levels of hardness and strength to meet specific wear resistance requirements.
    • Hardox HiTemp: Designed for applications exposed to high temperatures, this variant maintains its hardness and toughness even in environments up to 500°C.
    • Hardox Extreme: Offers extreme wear resistance and is suitable for applications where conventional Hardox grades may not suffice.
    • Hardox Round Bars: SSAB also produces Hardox round bars, which provide similar wear resistance properties in a round format, suitable for applications such as pins, shafts, and axles.

  • Applications Across Industries:

    • Mining and Quarrying: Used in excavator buckets, truck beds, crushers, and screens due to its ability to withstand abrasive materials.
    • Construction: Applied in mixer drums, demolition tools, and wear parts for concrete and asphalt mixing plants.
    • Transportation: Utilized in trailer floors, containers, and railway cars for durability against sliding wear and impact.
    • Recycling: Used in shredder knives, hammers, and wear liners in recycling equipment to withstand the abrasive nature of processed materials.

  • Performance and Testing:

    • Hardox steel undergoes rigorous testing to ensure consistent quality and performance. This includes hardness testing (Brinell, Rockwell, or Vickers), impact testing to evaluate toughness, and bend testing to assess formability and weldability.
    • SSAB provides technical support and documentation, including material certificates and recommendations for processing and welding, ensuring optimal performance and longevity in service.

  • Global Presence and Customer Support:

    • SSAB, the manufacturer of Hardox, operates globally with sales and service centers in various countries. This ensures that customers have access to technical support, training, and product information locally, facilitating easier adoption and implementation of Hardox steel in diverse applications.

    • Hardox steel's reputation is built on its superior wear resistance, reliability, and versatility, making it a preferred choice across a wide range of industries where equipment durability and performance are paramount.

    Grade Hardness (HBW) Thickness (mm) Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Charpy V-Notch Impact Toughness (J)
    Hardox 400 370-430 4.0 - 130 1000 1250 10 45 - 0°C
    Hardox 450 425-475 3.2 - 80 1200 1550 8 40 - 20°C
    Hardox 500 450-540 4.0 - 80 1250 1550 7 40 - 20°C
    Hardox 550 525-575 10 - 50 1400 1700 7 30 - 40°C
    Hardox 600 570-640 8 - 50 1650 2000 6 20 - 20°C
    Hardox HiTemp 350-480 4.0 - 50 1000 1250 10 40 - 20°C
    Hardox Extreme 650-700 8 - 25 1900 2250 5 20 - 20°C

    Notes on Specifications:

    • Hardness (HBW): Brinell hardness range for each grade.
    • Thickness (mm): Range of thicknesses available for each grade.
    • Yield Strength (MPa): Minimum yield strength of the steel.
    • Tensile Strength (MPa): Minimum tensile strength of the steel.
    • Elongation (%): Percentage elongation at fracture.
    • Charpy V-Notch Impact Toughness (J): Minimum impact toughness values at specified temperatures.

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