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What is Hardox Plate?

What is Hardox Plate?

In the world of industrial applications, durability, and strength are essential factors when selecting materials. Hardox plate, a high-strength wear-resistant steel, is one such material that stands out for its exceptional toughness and longevity. Whether used in mining, construction, or manufacturing industries, Hardox plate has revolutionized wear-resistant solutions. This blog will explore what Hardox plate is, its properties, advantages, applications, and why it is preferred in heavy industries.

What is Hardox Plate?

Hardox plate is a type of wear-resistant steel produced by SSAB, a Swedish steel manufacturer known for its high-quality steel products. This steel plate is specifically designed to withstand abrasive and high-impact wear conditions, making it an excellent choice for industries that demand strong, durable materials.

Hardox plates are quenched and tempered, enhancing their hardness and toughness. Unlike conventional steel plates, Hardox retains high impact resistance even under extreme conditions, providing a longer lifespan and improved performance in demanding environments.

Properties of Hardox Plate

Hardox plate is known for its unique combination of properties, including:

  1. High Hardness: Hardox plates have a Brinell Hardness Number (BHN) ranging from 400 to 600, making them highly resistant to abrasive wear and tear.
  2. Excellent Toughness: Despite its high hardness, Hardox maintains superior toughness, allowing it to absorb impacts and resist cracking under stress.
  3. Good Weldability: Hardox steel can be welded using common welding techniques, making it easier to fabricate and integrate into various applications.
  4. High Strength-to-Weight Ratio: Hardox plates are lighter than conventional steel plates of the same thickness while providing superior strength.
  5. Dimensional Stability: The plate maintains its shape and integrity even under extreme mechanical stress.
  6. Uniform Properties: Consistency in hardness and strength across the entire plate ensures predictable performance.

Types of Hardox Plates

hardox-400-steel-plate

Hardox 400 Steel Plate

hardox-450-steel-plate

Hardox 450 Steel Plate

hardox-500-steel-plate

Hardox 500 Steel Plate

Hardox 600 Steel Plate

Hardox 600 Steel Plate

Hardox Plate Specification

ItemHardox Plate
MaterialHARDOX 500/ 400/450/600 ,SUMIHARD ,NICRODUR,BRINAR ,DUROSTAT ,DILLIDUR ,JFE EVERHARD
Thickness3-200mm
Width500-3000mm
Length1000-12000mm
Heat TreatmentN, Q+T
Surface PaintEP, PE, HDP, SMP, PVDF

Hardox Grade Sizes

HARDOX 400

  • Sheet thickness 3 – 130 mm
  • Brinell hardness 370 – 430

HARDOX 450

  • Sheet thickness 3 – 80 mm
  • Brinell hardness 425 – 475

HARDOX 500

  • Sheet thickness 4 – 32 mm
  • Brinell hardness 470 – 530
  • Sheet thickness 32 – 80 mm
  • Brinell hardness 370 – 430

HARDOX 550

  • Sheet thickness 10 – 50 mm
  • Brinell hardness 525 – 575

Hardox 600

  • Sheet thickness 8 – 50 mm
  • Brinell hardness 560 – 640

Hardox® HiTuf

  • Sheet thickness 40 – 120 mm
  • Brinell hardness 310 – 370

Advantages of Using Hardox Plate

  1. Extended Service Life: Due to its superior hardness and toughness, Hardox plate lasts significantly longer than conventional steel, reducing maintenance and replacement costs.
  2. Increased Productivity: Industries benefit from fewer downtimes and maintenance requirements, leading to improved operational efficiency.
  3. Versatility: Hardox can be used in a wide range of industries, from construction and mining to manufacturing and agriculture.
  4. Cost-Effective: Though Hardox plates may have a higher initial cost, their extended lifespan and reduced maintenance expenses make them a cost-effective choice in the long run.
  5. Ease of Fabrication: Despite its hardness, Hardox can be cut, welded, and shaped to meet specific application needs.
  6. Environmental Benefits: The durability of Hardox reduces material wastage and the need for frequent replacements, contributing to sustainable practices.

Applications of Hardox Plate

Mining Industry
Mining Industry
Construction Industry
Construction Industry
Manufacturing and Industrial Equipment
Manufacturing and Industrial Equipment
Transportation Industry
Transportation Industry

How Hardox Plate is Manufactured

The manufacturing process of Hardox plates involves several steps to achieve its exceptional properties:

  1. Raw Material Selection: High-quality iron ore and alloying elements are used to ensure purity and strength.
  2. Quenching and Tempering: The steel undergoes quenching (rapid cooling) to increase hardness, followed by tempering (controlled heating) to enhance toughness.
  3. Quality Control: Each plate is tested for hardness, strength, and impact resistance to meet SSAB’s strict quality standards.

Welding and Cutting Hardox Plate

Despite its hardness, Hardox plate can be welded and cut using standard techniques. Here are some key considerations:

Welding Hardox Plate:

  • Use low-hydrogen welding consumables to prevent cracking.
  • Preheating may be required for thicker plates to reduce thermal stress.
  • Post-weld heat treatment is generally not needed but may be required for specific applications.

Cutting Hardox Plate:

  • Plasma cutting, laser cutting, and oxy-fuel cutting can be used, depending on thickness.
  • Water jet cutting is an option for precision cuts with minimal heat impact.

Comparing Hardox Plate to Other Wear-Resistant Steels

Hardox plate is often compared to other wear-resistant steels such as AR (Abrasion-Resistant) plates. While AR plates provide good wear resistance, Hardox stands out due to its superior toughness, consistency, and weldability. Many industries prefer Hardox over traditional AR plates because of its extended service life and enhanced performance under extreme conditions.

Conclusion

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