Superior raw materials from Suizhou Gaincin Machinery Co.,Ltd(GAINCIN.com & Showroom: gaincin.bossgoo.com), advanced automated equipment, unique heat treatment technique and strict quality control system contribute to better performance for the general hardness of our forged grinding steel ball, with surface hardness as high as 58-68HRC, volume hardness as high as 60-65HRC, even hardness distribution, impact toughness larger than 12J/CM2, and breakage rate far lower than 0.5%, close to 0.
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Forged ball Specification:
Diameter (mm) | Material | Chemical elements | Hardness (HRC) | ||||
C | Si | Mn | P/S | Cr | |||
20-125 | C45 | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | ≤0.25 | 48-55 |
20-140 | 60Mn | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.25 | 56-62 |
20-125 | B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.025 | 0.4-0.6 | 57-64 |
60-140 | B3,B4,B6 | 0.58-0.66 | 1.3-1.9 | 0.65-0.8 | <0.025 | 0.7-0.9 | 56-65 |
Hot Rolling Ball Specification:
Diameter (mm) | Material | Chemical elements | Hardness (HRC) | ||||
C | Si | Mn | P/S | Cr | |||
20-40 | C45 | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | ≤0.25 | 55-58 |
20-40 | 60Mn | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.25 | 58-62 |
20-40 | 65Mn,B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.025 | 0.4-0.6 | 60-64 |