Cast steel shot, Size: s780, s660, s550, s460, s390, s330, s280, s230, s170, s110, s70 Chemistry composition: C: 0.70-1.20% Mn: 0.60-1.20% Si: 0.40-1.20% S: 0.05%max P: 0.05%max Average degree of hardness: Normal regulation: 40-50hrc(377-509hv) Special: 52-56hrc(543-620hv) Special: 56-60hrc(620-713hv) Minimum density: 7.2g/cm3 25kgs/bag, 40bags/pallet
