The difference between 15MnV steel and 20MnV steel: Both materials belong to high-quality carbon structural steel, the main difference is that the carbon content is different, and the other components are the same.
The difference in carbon content is directly related to material properties. 15MnV steel has medium plasticity during cold deformation and good machinability, but poor weldability. It should be used after quenching and tempering. 15MnV steel is used to manufacture bolts, nuts, levers, etc. in medium-sized machinery.
20MnV carbon structural steel can be used in the normalized state, and can also be used in the quenched and tempered state. It has good cutting performance, moderate plasticity during cold deformation, and poor welding performance. 20MnV steel is used to manufacture parts subject to fatigue loads. 20MnV steel has low weldability, overheating sensitivity and temper brittleness. It is suitable for the crankshaft, roller shaft and connecting rod of fatigue resistant parts.
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