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25mm grinding steel balls
forged steel balls
Hardness:HRC60-65
forging steel ball 1.Size: 17-150mm 2.High Hardness and Low Breakage 3.Good wear-resistance 4.Lower price and Gold servic
forging steel ball
Spcification:
1.Chemical composition:
Item | C | Cr | Si | Mn | S | P | Cu | Mo | Ni | Hardness |
Element | 0.6-1.2% | ≤ 1.0 | 0.15-0.6 | 0.6-1.5 | ≤ 0.04 | ≤0.04 | ≤0.1 | ≤0.25 | ≤0.1 | 55-65 |
2.Specification and Hardness of Grinding Ball
Nominal diameter (mm) | Diameteical tolerance (mm) | Weight of Single of forging ball in average | Number of piece of One ton forging ball in average | Surface hardness | Impact toughness |
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50 | +2 -1 | 32 64 110 263 513 | 31250 15625 9090 3802 1949 | 55-65 | ≥12 |
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100 | +3 -2 | 888 1410 2104 2996 4110 | 1126 709 475 333 243 | ||
DIA 110 DIA 120 DIA 130 | +4 -2 | 5457 7102 9030 | 182 140 110 | ||
DIA 140 DIA 150 | +4 -3 | 11278 13871 | 88 72 |
Features:
(1) Characteristics: a) High hardness and resistance b) Good even wear c) No breaking
(2) Applied fields: a) Mines b) Cement plants c) Power stations d) Chemical industry
25mm forged steel balls with good-well resistance