steel shot:S110, S170, S230, S280, S330, S390, S460, S550, S660, S780 grit:G120, G80, G50, G40, G25, G18, G16,G14,G12,G10 Steel Shot S460 Chemical Composition ElementRange %Carbon0.85-1.20Silicon0.40-1.20Manganese0.60-1.20Sulphur≤0.05Phos≤0.05 Hardness HRC40-50 (normal) HRC48-52, HRC55-62 (strengthened) Density ≥7.20g/cm³ Microstructure Tempered Martensite or Troostitie Sieve AnalysisSize mmSpec ...