Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
forged steel ball
- High Hardness & Low Abrasion Performance
- 50,000+ Tons Annual Grinding Media Capacity
- ISO 9001 Certified Strict Quality Control
- Custom Grinding Media Solutions Worldwide
- Advanced CNC Forging & Heat Treatment Technology
Forged Steel Balls – High Performance Grinding Media Steel Balls for Industrial Mills
As a core type of industrial grinding media, our forged steel balls (grinding media steel balls) are manufactured through precision hot forging: metal billets are heated to 700-1300 °C to achieve plastic deformation, then pressurized via professional forging processes. This advanced forging technology eliminates smelting defects such as as-cast looseness, optimizes the metal microstructure and refines the metal streamline—fundamentally enhancing the wear resistance and structural strength of the grinding steel balls. For superior wear resistance, our forged grinding balls adopt high-quality raw materials, including national standard 60Mn, 65Mn steel, and self-developed high-efficiency wear-resistant alloy steel (B-2, B-3). All raw steels are sourced from large national steel mills, and we prioritize high manganese steel for its excellent impact resistance, enhanced structural strength, superior abrasion resistance and anti-fracture performance. Material quality directly determines 80% of the forging quality, and our strict raw material selection ensures consistent product performance.
Our forged steel balls are highly favored by global customers for their cost-effectiveness and durable performance, and have been widely adopted by world-renowned mining giants including Rio Tinto, BHP Billiton and Anglo Gold—becoming the preferred mining grinding media for large-scale industrial grinding operations.
Core Product Features of Our Forged Steel Balls
- Ultra-low breakage rate: ≤0.5% for 25mm-80mm forged grinding balls, ≤1% for 90mm-140mm grinding steel balls, far lower than industry average;
- High & uniformly distributed hardness: Surface hardness reaches HRC57-67, volume hardness HRC56-64, with gradient-distributed overall hardness for consistent grinding performance;
- Dimensional stability: No roundness loss, no deformation during long-term use, with excellent abrasion resistance to reduce grinding media consumption;
- Corrosion resistance: Strong acid and alkali resistance, specially suitable for wet ball mills in various mines, adapting to harsh grinding working conditions.
Applied Fields
Our forged steel balls are widely used in ball mill equipment across various industrial sectors, including large metallurgical mines (gold, copper, iron, aluminum, nonferrous metals, rare metals, etc.), cement building materials, coal slurry power plants, chemical plants, ceramic coatings, quartz sand and silica sand plants. As a versatile mining grinding media, they perfectly match the grinding requirements of dry and wet ball mills in different industries.
Professional Production Process Lines
We offer two mature production processes for forged steel balls, ensuring flexible production and consistent product quality for different specifications:
Rotary Cut Steel Ball Production Process
Raw Material Inspection → Intermediate Frequency Furnace Heating → Spinning into Balls → Quenching Treatment → Tempering Treatment → Finished Product Inspection → Packaging
Forging Steel Ball Production Process
Raw Material Inspection → Feeding → Intermediate Frequency Furnace Heating → Forging (Roll Forging) into Balls
Diameter Tolerance and Roundness
Our grinding steel balls feature strict dimensional accuracy, with standardized tolerance and roundness control for all specifications to ensure perfect matching with ball mill equipment:
| Diameter (mm) | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 125 | 150 |
| Diameter Tolerance（mm） | ±2 | ±2 | ±2 | ±2 | +3，-2 | +3，-2 | +3，-2 | +4，-3 | +4，-3 | +4，-3 | +4，-3 | +5，-4 |
| Roundness(%) | ≤2 | ≤2 | ≤2 | ≤2 | ≤3 | ≤3 | ≤3 | ≤4 | ≤4 | ≤4 | ≤4 | ≤5 |
Chemical Composition
We strictly control the chemical composition of all raw materials for forged steel balls, with clear element content ranges for each grade and strict limitation of harmful elements (P, S) to ensure product performance stability:
| Brand | C（%） | Si（%） | Mn（%） | Cr（%） | Cu（%） | Mo（%） | P（%） | S（%） | Ni(%) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 70Mn | 0.67-0.75 | 0.17-0.37 | 0.90-1.20 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 40Cr | 0.37-0.45 | 0.17-0.37 | 0.50-0.8 | 0.80-1.1 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 70Cr2 | 0.65-0.75 | 0.20-0.30 | 0.75-0.90 | 0.55-0.70 | 0-0.25 | 0-0.30 | 0-0.030 | 0-0.030 | 0-0.30 |
| B-2 | 0.70-0.80 | 0.17-0.37 | 0.70-0.80 | 0.50-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| B-3 | 0.58-0.66 | 1.2-1.6 | 0.65-0.80 | 0.70-0.90 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
Technical Specification
All our forged steel balls meet strict industrial performance standards, with excellent wear resistance, impact toughness and structural stability for different material grades:
| Brand | Breakage rate | Hardness(HRC) | Impact value(J/cm²） | Drop times(times) | Micro structure |
| 45# | <1% | ≥45 | ≥12 | ≥8000 | M+C |
| 60Mn | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 65Mn | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| 70Mn | <1% | ≥60 | ≥12 | ≥12000 | M+C |
| 40Cr | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 70Cr2 | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| B-2 | <1% | ≥58 | ≥12 | ≥15000 | M+C |
| B-3 | <1% | ≥60 |
