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Steel Balls

Steel Balls

High Chrome Cast Iron / Forged Steel · CAS N/A
Grinding MediaHS 7326.90 / 7325.99High Chrome

Our Steel Balls are premium grinding media manufactured from high chrome cast iron or forged steel, engineered for exceptional wear resistance and impact toughness in ball mill operations. Available in diameters from 20mm to 150mm, they deliver consistent grinding performance with low breakage rates and extended service life.

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Technical Specifications

ParameterSpecification
MaterialHigh Chrome Cast Iron (Cr 10-28%) / Forged Steel
HardnessHRC 58 - 65 (High Chrome) / HRC 55 - 62 (Forged)
Diameter Range20mm - 150mm (custom sizes available)
Impact Toughness≥ 5 J/cm² (High Chrome) / ≥ 15 J/cm² (Forged)
Breakage Rate< 1% (under normal operating conditions)
Roundness≤ 0.5mm deviation
Surface FinishSmooth, free of cracks and defects
Heat TreatmentQuenched and tempered for optimal hardness

Applications

Steel Balls are essential grinding media in mineral processing plants:

  • Grinding media in ball mills for ore comminution
  • Primary and secondary grinding in concentrator plants
  • Fine grinding in regrind circuits for improved liberation
  • SAG mill and ball mill circuits in gold, copper and iron ore operations
  • Cement and power plant coal pulverizing
  • Mineral processing plants across Middle East, Americas and Europe

Packaging & Delivery

  • 1000kg steel-ton bags (standard bulk packaging)
  • 500kg bags available for smaller orders
  • 25MT per 20ft FCL (bulk, palletized)
  • Custom packaging and labeling available
  • Mill test certificates (MTC) provided with each shipment

Documentation

  • Certificate of Analysis (COA) per batch
  • Material Safety Data Sheet (MSDS)
  • Commercial Invoice & Packing List
  • Bill of Lading / Air Waybill
  • Certificate of Origin (if required)

Product Types & Selection Guide

High Chrome Cast Iron Balls

  • Chrome content: 10% (Cr10), 15% (Cr15), 20% (Cr20), 28% (Cr28)
  • Superior wear resistance — ideal for abrasive ore grinding
  • Hardness: HRC 58-65 after quenching and tempering
  • Low wear rate: 0.3-0.8 kg per ton of ore (typical)
  • Best for: gold, copper, iron ore and cement grinding

Forged Steel Balls

  • Material: 65Mn, 40Cr, 42CrMo or B2 steel
  • Higher impact toughness — ideal for large SAG mills
  • Hardness: HRC 55-62 after heat treatment
  • Excellent impact resistance with minimal breakage
  • Best for: primary grinding, SAG mills, high-impact circuits

Quality Assurance

Interested in Steel Balls?

Contact us for a competitive quotation with full technical specifications and sample availability.

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