O2 steel, as a typical oil quenched die steel, exhibits superior hardness and wear resistance as its core characteristics. After standardized heat treatment, the hardness of O2 steel remains stable in the range of 58-62 HRC, with high carbon content (1.55-1.70%) forming uniform carbides with chromium elements, significantly improving the material's wear resistance, especially suitable for high load stamping scenarios. O2 steel is widely used in the manufacturing of small punching dies, gauges, and machine tool screws.
