Bullet Resistant Glass
Bullet-resistant glass is a type of strong but optically transparent material that is particularly resistant to being penetrated when struck.They are not completely impenetrable
Architectural Applications
- Podiums for VIP enclosures
- Sentry posts
- Police headquarters
- Prisons
- Banks
- Military facilities
- Jewelery stores
- Embassies
- Museum
- VIP Residence
- Residential Building, Villas
How it works
- Glass is brittle and it does not have a good orderly crystalline structure. If it did, it would be like a metal steel, where it dents and deforms instead of shattering.
- This allows the glass to absorb the bullet’s energy by transferring the kinetic energy of the bullet into shattering the glass.
- The softer plastic layer reinforces the glass by holding it in place and allowing the glass to flex back as it absorbs the impact.
- The polycarbonate and laminate also spreads the force of the bullet laterally across the entire glass surface.
- Layering these in multiple sheets allows the window to use properties of both materials more effectively; such as the glass on the backside shattering while the undamaged glass holds together the window. This also allows the glass to stop more that one bullet.
- Since polycarbonate is very strong, and it does not shatter like glass it’s an excellent candidate for bulletproofing.
Bullet Resistance Classification According To European Norms EN 1063
Class | Weapon | Caliber | Type | Weight (g) | Range (m) | Velocity (m/s) | Impact Energy | Shots | |
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BR1 | Handgun/Rifle | 0.22 LR | LB/RN | 2.6 ± 0.1 | 10.00 ± 0.5 | 360 ± 10 | 170 J | 3 |
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BR2 | Handgun | 9×19mm Parabellum | FJ/RN/SC | 8.0 ± 0.1 | 5.00 ± 0.5 | 400 ± 10 | 640 J | 3 |
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BR3 | Handgun | 0.357 Magnum | FJ/CB/SC | 10.2 ± 0.1 | 5.00 ± 0.5 | 430 ± 10 | 940 J | 3 |
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BR4 | Handgun | 0.44 Magnum | FJ/FN/SC | 15.6 ± 0.1 | 5.00 ± 0.5 | 440 ± 10 | 1510 J | 3 |
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BR5 | Rifle | 5.56×45mm NATO | FJ/PB/SCP | 4.0 ± 0.1 | 10.00 ± 0.5 | 950 ± 10 | 1800 J | 3 |
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BR6 | Rifle | 7.62×51mm NATO | FJ/PB/SC | 9.5 ± 0.1 | 10.00 ± 0.5 | 830 ± 10 | 3270 J | 3 |
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BR7 | Rifle | 7.62×51mm NATO | FJ/PB/HC | 9.8 ± 0.1 | 10.00 ± 0.5 | 820 ± 10 | 3290 J | 3 |
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SG1 | Shot Gun | 12/70 | Solid Lead Slug | 31.00 ± 0.1 | 10.00 ± 0.5 | 420 ± 20 | 1 | |
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SG2 | Shot Gun | 12/70 | Solid Lead Slug | 31.00 ± 0.1 | 10.00 ± 0.5 | 420 ± 20 | 3 | |
Without Classification | Assault Rifle | "7.62x39 AK-47 7.62x39 AP AK-47 7.62x54R 7.62x54R API B-32" | "FJ/PB/MSC API PB/HC1 FJ/PB/SCP1 API PB/HC1" | "7.9 ± 0.1 7.7 ± 0.1 9.5 ± 0.1 9.8 ± 0.1" | 10.00 ± 0.5 | "710 ± 15 730 ± 15 845 ± 10 860 ± 10" | 3 |