STEEL SHOT (40-50 HRC) Steel Shot is a spherical (round) shaped product made of steel that has been heat treated to a finely tempered martensitic structure, providing maximum breakdown resilience which results in extending product life. Available in the following sizes, according to SAE screen analysis: S110, S170, S230, S280, S330, S390, S460, S550, S660, S780 Chemical Composition of the products: C 0.70-1.20% Mn 0.60-1.20%, Si 0.40-1.20%. Hardness: Steel shot: 40-60HRC Density: Steel shot: 7.4g/cucm High strength, long lasting Ervin life: Cast steel shot and grit: 2000 cycles; Steel cut wire shot: 2800 cycles.