Rod Mill Grinding Rods. Rod mill grinding rods of all sizes and length. High hardness, range is 45~55HRC. Low bending, less than 1.5mm/m. Dense microstructure, Bainite +Pearlite+Carbide. Low breakage rate, more than 15000 times/ 3.5m. Low unit consumption, 40% reduction compared to unprocessed round steel.Web