1.Properties: Supply Iron Sulfide can be applied to adding sulfur to metals in steel making so as to improve cutting ability of those metals, inoculation effect and graphite morphology, and raise mechanical properties of gray iron casting. 2.Chemical Compositions Type S C Si Mn FeS27 25-30 ?0.03 ?0.30 ?0.10 FeS40 35-45 ?0.10 ?5.0 ?0.20