The chemical composition of 41CrMo4 steel typically includes 0.38-0.45% carbon, 0.60-0.90% manganese, 0.90-1.20% chromium, and 0.15-0.30% molybdenum, along with small amounts of other elements such as silicon, phosphorus, and sulfur.
The heat treatment process begins with a hardening stage, where the steel is heated to a specific temperature range (typically 850-880°C) and then quenched in oil or water to achieve a martensitic microstructure. This process significantly increases the hardness and strength of the steel.
Following the hardening stage, the steel undergoes a tempering stage, where it is reheated to a lower temperature (300-600°C) for a certain period of time. This helps to reduce the brittleness and improve the toughness of the steel, while maintaining a desirable level of hardness.
Overall, the heat treatment process of 41CrMo4 steel grade results in improved mechanical properties, including higher hardness, strength, and toughness, making it suitable for applications that require high performance and durability.
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