50Mn round steel has high strength, elasticity and hardness. It is mostly used after quenching and tempering, and its welding performance is poor. 50Mn round steel
The performance is similar to that of No. 50 steel, but its hardenability is higher, and the strength, hardness and elasticity after heat treatment are slightly higher than that of No. 50 steel. It has poor weldability, and has a tendency to overheat sensitivity and temper brittleness. Used as stress-bearing parts, high wear-resistant parts, such as gears, gear shafts, friction discs, spindles, flat springs, etc.