SUS631 semi-austenitic stainless steel is a high-performance material with excellent corrosion resistance and strength. The heat treatment process is characterized by changing the internal structure of the material through a specific heating and cooling process to achieve the purpose of optimizing its mechanical properties and corrosion resistance.
In the heat treatment process of SUS631 semi-austenitic stainless steel, it first needs to be heated to a certain temperature and held for a period of time to make it fully austenitized. This temperature is usually around 1000 °C, depending on the composition and thickness of the material. In this process, the internal structure of the material is altered, forming more austenitic structure, which increases its strength and toughness.
Next is the cooling process. The cooling rate has an important influence on the properties of SUS631 semi-austenitic stainless steel. In general, the faster the cooling rate, the stronger and harder the material will be, but it will also cause its toughness to decrease. Therefore, when choosing a cooling method, there are trade-offs that need to be made based on the specific application needs. Common cooling methods include air cooling, water cooling, and oil cooling.
It should be noted that the heat treatment process parameters (such as heating temperature, holding time, cooling rate, etc.) of SUS631 semi-austenitic stainless steel need to be adjusted according to the specific material composition, thickness and application requirements. Therefore, before heat treatment, sufficient testing and validation are required to ensure that the performance of the final product meets the requirements.