Forged Grinding Ball

Executive standard for the product is YB/T091-2005 forging(rolling)steel balls 1.Chemical composition C Si Mn Cr S P 0.50-0.65 0.15-0.37 0.6-1.2 ≤0.25 ≤0.04 ≤0.04   2.Size and hardness of the forged grinding ball Diameter (mm) Tolerance (mm) Weight of single ball in average(g) Number of piece of one ton ball in average Surface hardness (HRC)  Impact toughness(J/C㎡) Φ20 Φ25 Φ30 Φ40 Φ50   +2 -1 32 64 110 263 513 31250 15625 9090 3802 1949           50-65           ≥12 Φ60 Φ70 Φ80 Φ90 Φ100   +3 -2 888 1410 2104 2996 4110 1126 709 475 333 243 Φ110 Φ120 Φ130 +4 -2 5457 7102 9030 182 140 110     45-60 Φ140 Φ150 +4 -3 11278 13871 88 72 3.Product performance: High hardness, Even wearing, Good wear resistance, No breakage 4.Application fields: Mining, Cement Plants, Power Stations and Chemical Industries etc.