Stainless steel balls can maintain relatively stable performance under high pressure, high temperature, and frequent movement, but their performance depends on the type of material selected and the specific working environment. For high-pressure environments, especially applications that require strong mechanical loads, harder stainless steel balls (such as 440C) can provide high wear resistance and compressive strength, ensuring good performance during long-term use. However, in high-temperature environments, the heat resistance of stainless steel balls is affected by the material composition. For example, 304 and 316 stainless steel perform well at moderate high temperatures, but under extremely high temperature conditions, there may be a decrease in material strength. In this case, it is necessary to choose materials that are more heat-resistant, such as 310 stainless steel. Under frequent movement, the performance of stainless steel balls is usually related to their hardness and surface smoothness. High precision surface treatment and harder materials can reduce friction, wear, and improve stability during movement. Therefore, when selecting stainless steel balls, it is necessary to choose materials based on specific working environments, temperatures, pressures, and friction requirements to ensure their stable operation under high pressure, high temperature, and frequent movement.