The size of the organizational stress in stainless steel caps is related to factors such as the cooling rate in the martensite transformation zone, shape, and chemical composition of the material. The result of the organizational stress change in stainless steel caps is tensile stress on the surface and compressive stress in the core, which is exactly opposite to thermal stress. Practice has proven that during the heat treatment process of any workpiece, thermal stress and organizational stress will occur as long as there is a phase transformation. However, thermal stress has already occurred before the organizational transformation in stainless steel caps, while organizational stress is produced during the organizational transformation process. Throughout the cooling process, the combined effect of thermal stress and organizational stress results in the actual stress existing in the workpiece.

Stainless steel caps are widely used in industries such as petrochemical, electronics, heating, chemical processing, wastewater treatment, light industry, food, machinery, construction, nuclear power, aerospace, pressure vessels, and military.