BULLET RESISTANT GLASS LEVELS

1. BULLET RESISTANT GLASS LEVELS The European standard EN 1063 regulates the testing procedure for bullet-resistant glass in 9 different ballistic classes. The lowest ballistic class is BR1, the highest BR7. The classes SG1 and SG2 represent hunting shotguns. The 4 lower ballistic classes (BR1 to BR4) represent weapons ranging from sporting rifles to pistols or revolvers. The ballistic classes above represents long weapons, such as the American M16 rifle or the NATO G36 and G3 rifles. These are weapons that are effective and precise at long distance. The following table shows the weapons and ammunition types used for testing of bullet-resistant glass in accordance with EN 1063. Incidentally: the fastest projectile speed is 950 m/s. That's at least 3,400 km/h. Resis tance class Type Calibre Bullet Test condition Type Mass [g] +/-1 Energy [Joule] Shot distance [m] +/-0.5 Impact speed [m/s] +/-10 BR1 Gun .22 LR L/RN 2.6 168 10 360 FJ1)/RN/SC BR2 Handgun 9 8.0 640 5 400 mm Luge r FJ1)/CB/SC BR3 Handgun .357 10.2 943 5 430 Magnum FJ2)/FN/SC BR4 Handgun .44 Rem. 15.6 1,510 5 440 Magnum FJ2)/PB/SCP1 BR5 Gun 5.56 x 453) 4.0 1,805 10 950 7.62 x 51 FJ1)/PB/SC BR6 Gun 9.5 3,272 10 830 FJ2)/PB/HC1 BR7 Gun 7.62 x 514) 9.8 3,295 10 820

2. SG1* Shotgun Shotgun 2/70 Lead shotgun shot5) 31 2,734 10 420 1 SG2** Shotgun Shotgun 2/70 Lead shotgun shot5) 31 2,734 10 420 1 * one shot, +/- 0.5 g, +/- 20 m/s ** three shots, +/- 0.5 g, +/- 20 m/s 1) Steel full metal jacket shot, plated 2) Tombac full metal jacket shot 3) Spin length 178 mm +/- 10 mm 4) Spin length 254 mm +/- 10 mm 5) Brenneke L Lead CB Conical bullet shot FJ Full metal jacket shot FN Flat-nosed bullet HC1 Steel hard core, mass 3.7 g +/- 0.1 g, Hardness larger than 63 HCR PB Pointed bullet RN Round-nose bullet SC Soft-centre (lead) SCP1 Soft-centre (lead) with steel penetrator (type SS109) Ballistic classes for bullet resistant Glass in accordance with EN 1063 Firing tests: In the firing tests in accordance with EN 1063, the bullet-resistant glass (500 x 500 mm) to be tested is fastened in a frame. The panes receive 3 hits in the centre, each hit forming an equilateral triangle at a distance of 12 cm. The angle of impact is 90° and the firing distance is 5m or 10m, depending on the resistance class. The shot may not penetrate the bullet-resistant glass. If no glass splinters emerge on the protective side, the ballistic class additionally receives the rating "no splinters" (NS= no splinters). If glass splinters emerge on the protected side of the impact-resistant glass, "Splinters" is added to the test result. FG Glass BULLETSHIELD glass is the industry’s leading bullet-resistant or bullet proof glass range that is designed to withstand the most demanding protection requirements from bullet impacts.

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