Usage: applied in shot blasting surface cleaning of raw iron, tin, carbon steel and other casting extensively! Chemical composition: C: 0.70-1.20%, mn: 0.60-1.20% , si: 0.40-1.20%, P: 0.05% max, S: 0.05% max Hardness: Gp: 42-50hrc Gl: 52-56hrc Gh: 56-60hrc Standard: sae j827 Size: 0.3mm- 2.5mm we can customize other size product Hardness:42-60hrc )package:25kg/bag, 40bags/ton.Also, we do special packing requirement such as iron drum and plastic bags.