What is the property of 65Mn spring steel?

65Mn spring steel must have a high performance limit and a high yield ratio to avoid deformation of the spring steel under high loads. At the same time, it requires good hardenability and low decarburization, which makes the limit of performance large; And good surface, easy to form and good thermal processability in hot and cold conditions. Thermal process for forming hot spring steel in the hot state. Most of the formed spring steels are formed by combining hot forming and thermoforming, while most of the coil spring steels are heated after hot forming. The heat treatment method of 65Mn spring steel is quenching + tempering at medium temperature, and the structure is tempered tortite after heating. This kind of organization has high sexual limit and yield limit, and has certain toughness.