Heat Treatment Process Curve (Typical)
Controlled heating, austenitizing, quenching and tempering build a dense structure with consistent through-hardness.
Forged Grinding BallsFor Mining, SAG Mills & Ball Mills
Engineered for high impact resistance, lower breakage, longer service life and lower total cost per ton milled.
Low Wear RateSuperior toughness and wear resistance
Lower BreakagePrecision forging and heat treatment
Consistent HardnessUniform structure for stable performance
Higher Mill EfficiencyReliable grinding efficiency and output
Product Overview
Forged grinding balls are produced from selected alloy steel through controlled heating, forging and heat treatment. The dense, uniform structure helps reduce breakage and maintain stable wear performance in demanding mining circuits.
Material grade, heat treatment and final specification are matched to the mill condition and verified by batch inspection.
Available Size Range20-150 mmOther sizes available on request
Product Specification
| Diameter | 20-150 mm |
|---|---|
| Hardness | 50-65 HRC |
| Impact value | 12-25 J/cm2 |
| Breakage rate | Less than 1% |
| Packaging | Steel drums or bulk bags |
| Material | Alloy steel |
|---|---|
| Best use | SAG mills, mining |
| Inspection | Chemistry, hardness and dimensions |
| Documentation | Batch report and packing list |
| Customization | Available by operating condition |
Technical Performance & Quality Control
Hardness Profile (Typical)
Surface
58–65 HRCMid Layer
50–58 HRCCore
40–50 HRC
58–65 HRCMid Layer
50–58 HRCCore
40–50 HRC
The gradual profile balances wear resistance at the surface with impact toughness toward the core.
Product Advantages
Low Wear RateSuperior toughness and wear resistance
Lower BreakagePrecision forging and heat treatment
Consistent HardnessUniform structure for stable performance
Higher Mill EfficiencyReliable grinding efficiency and output
Applications / Where Used
- SAG mills
- Primary ball mills
- Gold and copper mines
- Iron ore concentrators
Standard Size Range & Technical Data
| Diameter | Weight | Hardness | Impact Value | Wear Rate | Application |
|---|---|---|---|---|---|
| 20-40 mm | 0.03-0.26 kg/pc | 58-64 HRC | ≥ 12 J/cm² | ≤ 1.0% | Ball mill |
| 50-70 mm | 0.50-1.40 kg/pc | 58-64 HRC | ≥ 12 J/cm² | ≤ 1.0% | Ball / SAG mill |
| 80-100 mm | 2.10-4.10 kg/pc | 58-64 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 110-130 mm | 5.50-8.70 kg/pc | 58-64 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 140-150 mm | 10.90-13.80 kg/pc | 58-64 HRC | ≥ 15 J/cm² | ≤ 1.0% | Large SAG mill |
Other sizes and specifications are available upon request.
Quality Assurance
Chemical CompositionRaw material and alloy verified
Hardness TestBatch hardness controlled
Dimensional InspectionSize and geometry verified
Impact & Drop TestPerformance verified
Frequently Asked Questions
The standard range is 20-150 mm. Additional sizes can be reviewed against your mill dimensions and operating data.
Raw material, alloy chemistry, heat treatment, hardness and dimensions are controlled and recorded by batch.
Selection is based on mill type, feed size, ore hardness, impact level, current consumption and target cost per ton.
Yes. Size, hardness, material grade, packaging and other parameters can be adjusted after technical review.
Export options include steel drums, bulk bags or strapped bundles depending on product type and destination.
Batch chemistry, hardness, dimensions, impact testing and available third-party reports can be supplied with the order.