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Help CenterForged Steel Grinding Balls HRC55-65 Low Breakage High Impact Toughness For Mining Cement Ball Mill SAG Mill
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Forged Steel Grinding Balls – High Hardness, High Impact Toughness, Low Breakage
Product Description
Forged steel grinding balls are manufactured by hot-rolling or hot-forging from premium alloy steel rounds, followed by quenching and tempering. They offer high hardness, excellent impact toughness, and low breakage rate, ideal for ball mills and SAG mills in mining, cement and thermal power plants.
Key Technical Parameters
- Diameter: 20mm – 150mm
- Surface Hardness: 55 – 67 HRC
- Core Hardness: 50 – 63 HRC
- Hardness Difference (surface to core): ≤5 HRC
- Impact Toughness: ≥12 J/cm²
- Breakage Rate: ≤1%
- Falling Ball Test: ≥20,000 times
- Microstructure: Tempered Martensite + Bainite
- Heat Treatment: Quenching + Tempering
Raw Materials
45#, 50Mn, 60Mn, 65Mn, B2, B3 alloy steel rounds.
Product Advantages
- High overall hardness – uniform from surface to core
- High impact toughness – withstands SAG mill high-energy impacts
- Low breakage – ≤1% minimizes mill downtime
- No deformation or cracking – maintains spherical shape
- ISO9001, ISO14001, ISO45001 certified
Applications
- Mining: Iron ore, copper ore, gold ore, nickel ore
- SAG mills and ball mills
- Cement plants
- Thermal power plants
Company Strength
- Annual capacity: 60,000 tons
- 40 patents (18 inventions)
- Advanced forged ball production lines
- Exported to 30+ countries
Contact us for a quote based on your mill parameters.
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