1) High Hardness: Surface hardness of forged steel ball is to 60-68 HRC and volume hardness of forged grinding ball is to 60-65 HRC;
2) High Impact Toughness: The impact toughness is higher than 12 J/cm2;
3) Low Broken Rate: The actual broken rate is not higher than 1%;
4) Even Wear-resistance: The wear rate of cast ball is 50-700 g/ton.
1. Feature:
1) High Hardness: Surface hardness of forged steel ball is to 60-68 HRC and volume hardness of forged grinding ball is to 60-65 HRC;
2) High Impact Toughness: The impact toughness is higher than 15 J/cm2;
3) Low Broken Rate: The actual broken rate is not higher than 1%;
4) Even Wear-resistance: The wear rate of cast ball is 50-700 g/ton.
2. Chemical Composition of 125mm Forged Ball
Below is our chemical composition:
| Brand | Material | C | Mn | Si | Cr | S | P | V |
| Title-1 | 45# | 0.42-0.56 | 0.50-0.80 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 | - |
| Title-2 | 50Mn | 0.48-0.56 | 0.70-1.20 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 | - |
| Title-3 | 60Mn | 0.57-0.65 | 0.70-1.20 | 0.17-0.37 | ≤0.25 | ≤0.030 | ≤0.035 | - |
| Title-4 | 65Mn | 0.60-0.70 | 0.80-1.20 | 0.17-0.37 | ≤0.25 | ≤0.030 | ≤0.030 | - |
| Title-5 | B2 | 0.72-0.85 | 0.70-1.20 | 0.17-0.37 | 0.42-0.85 | ≤0.030 | ≤0.030 | |
| Title-6 | B3 | 0.52-0.65 | 0.42-1.20 | 1.30-1.90 | 0.70-1.20 | ≤0.020 | ≤0.020 | 0.10-0.20 |
3. Physical Properties of 125mm Forged Ball
| Brand | Material | Impact Test AK.J/cm2 | Endurance Test Times (5m) | Hardness |
| Title-1 | 45# | ≥15 | ≥15000 | ≥53 |
| Title-2 | 50Mn | ≥15 | ≥15000 | ≥55 |
| Title-3 | 60Mn | ≥15 | ≥15000 | ≥55 |
| Title-4 | 65Mn | ≥16 | ≥15000 | ≥55 |
| Title-5 | B2 | ≥16 | ≥15000 | ≥56 |
| Title-6 | B3 | ≥16 | ≥15000 | ≥58 |
4. Specification of 125mm Forged Ball
| Diameter | Diameter Tolerance | Average Weight per Ball | Average Numbers Per Ton Ball | |
| mm | Inch | mm | g | - |
| 125 | 5'' | +4/-2 | 8008 | 12 |
5. Packaging & Shipping
(1) Container Bag (with pallet): 1000 KGS/Bag
(2) Steel Drum (with pallet): 850-920 KG/Drum
