SAE/AISI 1566 is a high-carbon manganese steel selected for components that require a practical balance of hardness, strength, wear resistance, fatigue performance, and toughness. With approximately 0.60–0.71% carbon, the material can achieve high surface hardness after suitable quenching and tempering. Typical applications include springs, shafts, pins, blades, agricultural equipment parts, wear components, and precision parts…