400 Brinell Hardness
Steels with 400 Brinell Hardness combine high abrasion resistance, moderate toughness, and weldability, making them essential for industries that deal with extreme wear and moderate impact loads. Selecting the right type—whether high-manganese, quenched and tempered, alloyed steel, or hardfaced composite—ensures optimal performance, longer equipment life, and reduced maintenance costs.
- Description
Steel with a 400 Brinell Hardness (HBW) is classified as a high-hardness wear-resistant steel. With excellent resistance to abrasion and impact, this steel is widely used in mining, construction, material handling, and heavy machinery industries.
1. Characteristics of 400 Brinell Hardness Steel
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High wear resistance: Ideal for environments with continuous friction, abrasive materials, or heavy load.
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Moderate toughness: While extremely hard, steels with 400 HB maintain sufficient toughness to resist cracking under moderate impact.
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Versatile processing: Can be welded, cut, and fabricated into plates, liners, and components.
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Abrasion resistance: Can withstand severe sliding and abrasive wear without excessive material loss.
2. Common Types of Steel with 400 HB
a. High-Manganese Steel (Hadfield Steel)
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Manganese content: ~12–14%
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Work-hardening property: The surface becomes harder under impact.
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Applications: Mining equipment, crushers, excavator buckets, heavy-duty liners.
b. Quenched and Tempered Wear-Resistant Steel
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Examples: AR400, Q&T steel grades
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Manufactured via heat treatment to achieve uniform hardness of 400 HB.
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Applications: Conveyor plates, wear plates, chutes, hoppers, dump truck liners.
c. Alloyed Chromium or Carbon Steel
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Alloyed with chromium or carbon to enhance surface hardness.
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Offers good resistance to abrasion while maintaining weldability.
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Applications: Mining and construction machinery components, cutting edges, and impact surfaces.
d. Composite or Hardfacing Steel
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Steel substrate with a hardfacing overlay containing carbide (Cr, W, Nb).
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Achieves localized 400 HB hardness in wear areas while retaining toughness in the base metal.
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Applications: Heavy-duty liners, crusher plates, slurry pumps, hoppers, and chutes.
3. Applications of 400 HB Steel
Steel with 400 Brinell hardness is ideal for environments involving:
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Mining and Quarrying: Crusher jaws, grinding liners, bucket teeth, chutes, and hoppers.
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Construction & Heavy Equipment: Bulldozer blades, excavator components, earthmoving tools.
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Material Handling: Conveyor liners, wear plates for abrasive material transport.
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Industrial Machinery: Slurry pumps, mixer blades, and high-wear contact surfaces.
