... is that: high hardness, low breakage, good wear-resistance, lower price. It is mainly used in cement plants, mines, power stations ... ≤0.1≤0.1Medium Chromium2.2-2.80.5-1.00.5-0.810.0-12.0≤0.1≤0.1High ... Chromium2.4-3.20.5-0.80.5-0.816.0-18.0≤0.1≤0.12)The Product DescriptionModelMechanical ... .0025011Ø1105.3018812Ø1206.8014713Ø1257.7512914Ø1308.74114 Low price and good surface steel ball