Silicon Carbide Composite Rotor & Stator for Abrasive Ore Duty For the most aggressive duty on an SF-4 flotation machine, a silicon carbide composite rotor and stator gives you the hardest working surface available. It is the material plants specify when rubber, steel and standard polyurethane simply cannot keep their profile. Performance figures Property Silicon carbide composite Hardness ≥ 92 HRA Abrasion loss ≤ 0.03 cm³ Bulk density ≥ 3.1 g/cm³ Thermal stability up to 800
