DH40 belongs to the high-strength alloy steel, and its chemical composition mainly consists of carbon, silicon, manganese, phosphorus, sulfur and other elements. Among them, the carbon content is high and can reach over 0.4%, which can give the steel material high strength and hardness. Silicon and manganese are the main alloying elements, which can enhance the strength and hardness of the steel material and improve its wear resistance. Phosphorus and sulfur are mainly used to improve the processing properties of steel materials and reduce costs.
Strength and hardness: Due to the higher carbon content and the addition of alloying elements, DH40 has high strength and hardness, and its yield strength and tensile strength are better than that of ordinary carbon steel. Higher strength and hardness can be obtained through reasonable heat treatment process.
DH40 has better wear resistance and can be used to make various parts and tools that need wear resistance. Its wear resistance is better than ordinary carbon steel, which can extend the service life of the parts. It can maintain a stable bearing capacity under repeated loads. Therefore, DH40 is commonly used in the manufacture of parts subjected to large alternating loads. Although the strength and hardness of DH40 is higher, its processing performance is better. The machining accuracy and quality of the parts can be ensured through reasonable heat treatment process and machining process.
