
Ballistic Plate is a rigid armor component used in personal protective equipment, usually made of ceramic, polyethylene, or metal composite materials, to protect the wearer's critical areas (such as the chest and back) by absorbing and dispersing the impact of bullets. Its protection rating follows international standards (such as NIJ standards) and protects against pistols, rifles, and even armor-piercing bullets. Bulletproof panels are widely used in the military, law enforcement, and civilian security fields. In recent years, the application of ultra-high molecular weight polyethylene (UHMWPE) materials has significantly reduced weight, while composite ceramic technology has improved multi-bomb protection capabilities. Users need to pay attention to core parameters such as certification standards, weight and thickness balance when purchasing.
Bulletproof board materials are mainly divided into three categories: Ceramic Composites: Composite of alumina or silicon carbide ceramics with ultra-high molecular weight polyethylene (UHMWPE), with excellent ballistic resistance and light weight (usually 4-6kg), can defend against high-speed rifle bullets such as 7.62mm NATO armor-piercing projectiles 13. Its protection level corresponds to NIJ III-IV class, suitable for high-intensity combat scenarios. High-strength steel plate: such as AR500, FD56 and other alloy steels, through martensite hardening process to improve toughness and hardness, low cost but large weight (about 6-8kg), can resist 9mm pistol bullets to AK47 lead core bullets 36. The protection level is mostly NIJ II-IIIA, suitable for police or civil security. PE polymer board: based on ultra-high molecular weight polyethylene (UHMWPE) material, the lightest weight (usually less than 3kg), medium protection class (NIJ IIIA class), suitable for daily patrol or plain clothes tasks. At present, ultra-high molecular weight polyethylene (UHMWPE) bulletproof board is the lightest material, and its core advantages are as follows: 1.Ultimate lightweight performance Weight range: usually less than 3kg (e.g. NIJ III plate is only 1kg), 40% lighter than ceramic plate and 70% lighter than steel plate under the same protection level. Physical characteristics: The density is only 0.93 - 0.99g/cm(lower than the density of water), the molecular weight is as high as 1.50 million or more, forming a high-strength molecular chain network. 2.The scientific principles of lightweighting Molecular structure advantages: Ultra-long molecular chains (30 times longer than ordinary PE chains) are arranged in a special orientation to achieve a balance of high tensile strength (15 times longer than steel wires) and low densities. Energy absorption mechanism: When the warhead strikes, the molecular chain extends and deforms through the "silver pattern phenomenon" (non-brittle fracture), and the energy absorption per unit thickness reaches 83 joules/mm.