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Si-containing Hadfield steel is a suitable alternative for Cr containing Grade 3 Mn steels generally used as thick sectioned components in primary crushers of run of mines. The addition of Si enhances fluidity which is essential for sound castings and the absence of Cr eliminates the problem of grain boundary carbide-induced embrittlement in thicker sections. The steel is superior attributed to the following reasons: Si-based modification of the composition leads to cheaper Hadfield steel variant . Elimination of Cr renders the alloy suitability for heavy section castings. Enhanced fluidity due to higher Si content leads to sound castings Yield Strength: 440 ± 5 MPa, UTS: 810 ± 20 MPa and % Total Elongation: 30 ± 2% . Hardness: 220 ± 10 HV30, Charpy Impact Toughness: 150 ± 10 J