65Mn steel plate , manganese improves hardenability, φ12mm steel oil can be hardened, surface decarburization tends to be smaller than silicon steel, the comprehensive mechanical properties after heat treatment is better than carbon steel, but there is overheat sensitivity and temper brittleness. Used as a small size flat, round spring, seat spring, spring spring, spring ring, valve spring, clutch reed, brake spring and cold drawn steel coiled coil spring.

The 65Mn steel sheet is a general term for hard steel strips and is a hard 65Mn steel strip. The hardness varies depending on the manufacturing process of different manufacturers. Some about HRC40 and some about HRC44-49, for example, we do 44-49. Before you order, you can figure it out. Usually (note: "general"), the heat treated steel strip is a hard steel strip. Strictly speaking, heat treatment is a processing technique. The all-hard steel strip is one of the heat-treated steel strips. The concept of the heat treatment process can be "heat treated" by Baidu. For example, the soft tape is annealed and annealing is one of the heat treatment processes. Therefore, strictly speaking, mild steel strip is also a heat-treated steel strip. 650Mn heat treatment hardness: after 38~60HC heat treatment and cold drawing hardening, the strength is high, with certain toughness and plasticity, and the fatigue limit is the same as the alloy spring in the same surface state and the fatigue limit under complete quenching.