The core of personal protection lies in the armor plates. The debate between ceramic composite and steel plates is defined by a trade-off between weight and protection profile. Ceramic plates are lighter and are designed to break up a bullet's core upon impact, absorbing its energy. They are multi-hit capable but can be brittle and must be replaced after a significant impact.
Steel plates are significantly heavier but are extremely durable and can withstand multiple hits. Their major drawback is spalling: upon impact, the bullet fragments and the backface of the plate can create a shower of metal splinters, potentially causing catastrophic secondary injuries to the neck and limbs. This necessitates the use of a built-up spall coating or a protective sleeve.
The efficacy is stopping lethal projectiles. Choosing between them depends on the mission. For missions requiring long-distance movement (dismounted patrols), the lighter weight of ceramic is often chosen to reduce fatigue. For vehicle-based operations or static defense where weight is less concern, steel's durability may be preferred, but only with proper spall mitigation. The choice is a calculated decision based on the expected threat and operational requirements.
