Premium Raw Materials
Selected B3, B4 and special alloy steel grades provide deep hardening and high impact toughness.
- Low impurity alloy steel
- Higher impact toughness
- Stable batch chemistry
Forged Balls for SAG Mill100-150 mm Heavy-Duty Forged Balls
High toughness, low breakage and maximum milling efficiency for demanding SAG mill conditions.
Premium Raw MaterialsB3, B4 and special alloy grades
Advanced Heat TreatmentUniform hardness distribution
Uniform Hardness & StructureStable surface-to-core properties
Low Breakage RateControlled for demanding SAG mills
Product Overview
SAG mill grinding balls require high impact toughness, controlled hardness gradients and consistent dimensions. This grade is designed for large mills handling coarse feed and repeated high-energy impacts.
Material grade, heat treatment and final specification are matched to the mill condition and verified by batch inspection.
Available Size Range100-150 mmOther sizes available on request
Product Specification
| Diameter | 100-150 mm |
|---|---|
| Hardness | 58-63 HRC |
| Volumetric hardness | Uniform gradient |
| Roundness tolerance | Project-specific |
| Packaging | Bulk bags or steel drums |
| Material | Cr-Mn alloy steel |
|---|---|
| Best use | Large SAG mills |
| Inspection | Chemistry, hardness and dimensions |
| Documentation | Batch report and packing list |
| Customization | Available by operating condition |
Technical Performance & Quality Control
Advanced Heat Treatment
Strict quenching and tempering builds a controlled hardness gradient from surface to core.
- Uniform hardness distribution
- Deep hardened layer
- High-toughness core
Optimized Microstructure
Key Benefits
Application Notes
Large-diameter mills create severe impact and cataracting forces. The selected grade must balance surface hardness, core toughness and volumetric hardness.
- High breakage rate
- Unstable grinding performance
- Frequent maintenance
Standard Size Range & Technical Data
| Diameter | Weight | Hardness | Impact Value | Wear Rate | Application |
|---|---|---|---|---|---|
| 100 mm | 3.9 kg/pc | 58-63 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 110 mm | 5.2 kg/pc | 58-63 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 120 mm | 6.8 kg/pc | 58-63 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 125 mm | 7.6 kg/pc | 58-63 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 130 mm | 8.6 kg/pc | 58-63 HRC | ≥ 15 J/cm² | ≤ 1.0% | SAG mill |
| 140-150 mm | 10.7-12.2 kg/pc | 58-63 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
We respect your privacy. Your information and uploaded files are used only to provide forged balls for sag mill recommendations and quotations.
Frequently Asked Questions
The standard range is 100-150 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.