From tanks to bulletproof vehicles: the evolution of bulletproof steel plates

The origins of bulletproof steel plates can be traced back to the rolled homogeneous armor of World War I tanks. During World War II, nickel-chromium alloy steels increased their protective effectiveness by 125% through carburizing and hardening. However, their lack of toughness gave rise to the concept of composite armor. The T-64 tank pioneered a "ceramic ball + fiberboard" sandwich structure, achieving armor penetration resistance exceeding 600mm of homogeneous steel equivalent thickness.

In the 21st century, bulletproof vehicles have adopted a composite technology of high-purity armor steel and UHMWPE fibers, achieving a 40% weight reduction while protecting against 7.62mm rifle rounds. Hot-formed steel, through 820℃ quenching and tempering, meets military standards within a 2mm thickness, promoting the widespread use of bulletproof vehicles in civilian applications.

In the future, intelligent dynamic armor may utilize nanomaterials to adjust its hardness in real time, instantly enhancing the vehicle's protection level when encountering a threat, continuing the century-long trajectory of technological innovation in bulletproof steel plates.