China Low Broken Casting and Forged Steel Grinding Balls, Find details about China Forged Steel Grinding Balls, Grinding Media from Low Broken Casting and Forged Steel Grinding Balls
Diameter | Equipment | ||
| 100-160mm(4"-6 1/2'') | SAG mills | ||
| 20-100mm(4/5''-4'') | Ball mills | ||
Ball diameter | Diameter tolerance | Weight of single ball in average | Number of piece of one ton ball in average | Surface hardness | Core hardness | Impact toughness |
| (mm) | (mm) | (g) | (pcs) | (HRC) | (HRC) | (J/c) |
| Φ20 | +2,-1 | 32 | 31250 | 60-67 | 57-62 | ≥12 |
| Φ25 | +2,-1 | 64 | 15625 | 60-67 | 57-62 | ≥12 |
| Φ30 | +2,-1 | 110 | 9090 | 60-67 | 57-62 | ≥12 |
| Φ40 | +2,-1 | 263 | 3802 | 60-67 | 57-62 | ≥12 |
| Φ50 | +2,-1 | 513 | 1949 | 60-67 | 57-62 | ≥12 |
| Φ60 | +3,-2 | 888 | 1126 | 58-65 | 50-56 | ≥12 |
| Φ70 | +3,-2 | 1410 | 709 | 58-65 | 50-56 | ≥12 |
| Φ80 | +3,-2 | 2104 | 475 | 58-65 | 50-56 | ≥12 |
| Φ90 | +3,-2 | 2996 | 333 | 58-65 | 50-56 | ≥12 |
| Φ100 | +3,-2 | 4110 | 243 | 58-65 | 50-56 | ≥12 |
| Φ110 | +4,-2 | 5457 | 182 | 55-63 | 48-55 | ≥12 |
| Φ120 | +4,-2 | 7102 | 140 | 55-63 | 48-55 | ≥12 |
| Φ130 | +4,-2 | 9030 | 110 | 55-63 | 48-55 | ≥12 |
| Φ140 | +4,-2 | 11278 | 88 | 55-63 | 45-50 | ≥12 |
| Φ150 | +4,-2 | 13871 | 72 | 55-63 | 45-50 | ≥12 |
Type | Chemical components | |||||
| C | Mn | Si | Cr | S | P | |
| 45# | 0.42-0.50 | 0.50-0.8 | 0.17-0.37 | ≤0.25 | ≤0.045 | ≤0.040 |
| 50Mn | 0.48-0.56 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 60Mn | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 65Mn | 0.60-0.70 | 0.90-1.2 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| B2 | 0.75-0.85 | 0.70-0.9 | 0.17-0.37 | 0.5-0.8 | ≤0.030 | ≤0.030 |