2016 hot sale ORIENTAL Factory price low price grinding steel ball
Product Description
low price grinding steel ball —Product Introduction:
The Forged ball is made by direct heating at high temperature and forging, and it do not need melting and casting. So this steel ball is called Forged steel ball.
Specification:
| Brand | Material | C | Mn | Si | Cr | P/S | Ni |
| DT-1 | 50Mn | 0.48-0.56 | 0.65-1.0 | 0.17-0.37 | 0.15max | 0.035max | 0.05max |
| DT-2 | 60Mn | 0.57-0.65 | 0.70-1.1 | 0.17-0.37 | 0.25max | 0.035max | 0.05max |
| DT-3 | 65Mn | 0.62-0.75 | 0.90-1.2 | 0.17-0.37 | 0.25max | 0.035max | 0.10max |
| DT-4 | 75MnCr(B2) |
0.72-0.85 |
0.70-0.90 | 0.17-0.35 | 0.40-0.60 | 0.035max | 0.15max |
| DT-5 | B3 | 0.50-0.65 | 0.4-1.0 | 1.40-1.80 | 0.77-1.10 | 0.035max | 0.15max |
| DT-6 | 45# | 0.42-0.48 | 0.50-0.80 | 0.17-0.37 | 0.15max | 0.035max | 0.05max |
| 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/cm2) |
| 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 |
