NIJ Level 4 Bulletproof Glass
Strictly complying with the specifications of Type 4 protection level in the NIJ Standard 0108.01, it is a top-level protective product for resisting armor-piercing rifle bullets, designed specifically for extreme threat scenarios. It is mainly used for protective windows of heavy military armored vehicles, core strategic facilities (such as national important command centers), and transparent components of high-end special combat vehicles (such as anti-terrorism assault vehicles). It can effectively resist the fatal impact of armor-piercing rifle bullets, providing ultimate safety protection for core personnel and strategic facilities.
Key Performance and Technical Parameters
Protection Capability
It can resist top-level threat ammunitions such as 30-06 armor-piercing (AP) bullets (U.S. military designation APM2, nominal mass 10.8g). At the same time, it can provide single-hit protection against all threats covered by Type 1-3 levels. It is currently the highest protection level product in the field of transparent protection against individual firearms, and can deal with shooting threats from armor-piercing rifles (such as modified M1 Garand).
Ballistic Performance Indicators
When the impact velocity of the armor-piercing bullet reaches 868±15 m/s, each sample with a specification of 30.5x30.5cm or larger shows no penetration after 1 fair hit, completely preventing the bullet and fragments from piercing the witness plate. It adopts a composite structure of "high-hardness bulletproof inorganic glass + special PC + multi-layer reinforced bonding layer". Through material formula optimization and structural design, it can effectively disperse the huge kinetic energy of the armor-piercing bullet, preventing the glass from being pierced or producing fatal fragments. After impact, the product still maintains a certain degree of structural integrity.
Extreme Environmental Adaptability
It has passed 100°C 144h high-temperature aging test, -55°C extreme low-temperature freezing test and 95% high-humidity cycle test, with no attenuation in structural stability. It has the ability to resist collateral damage from explosive shock waves, with no large-area fragmentation or falling off under the action of shock waves generated by close-range explosions, and can continuously provide protective effects in complex battlefield environments.
Process and Adaptation Advantages
Integrating core technologies such as 3D CNC processing, low-stress composite and multi-curved surface high-precision forming, its forming accuracy and protective performance reach the international leading level. It supports customized design according to the special size (up to 3m*2m) and curved surface requirements of heavy armored vehicles and special facilities. Adopting military-grade quality control standards, it needs to go through 12 inspection procedures from raw material procurement to finished product delivery, ensuring the consistent protective performance of each product. During installation, special high-strength fixing components are equipped, which are closely connected with the main body of the protective structure, preventing loosening caused by impact vibration and ensuring the protective reliability during long-term use.
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