{{Short description|Security glazing standard}} '''EN 1063''', or CEN 1063, is a security glazing standard created by the [[European Committee for Standardization]] for measuring the protective strength of bullet-resistant glass. It is commonly used in conjunction with EN 1522 (Euronorm standard for Bullet Resistance in Windows, Doors, Shutters and Blinds) to form a [[Terminal ballistics|ballistic]] classification system by which armored vehicles and structures are tested and rated.<ref>{{cite web|title=Bullet Resistance|url=http://www.sitec.de/en/information-and-advice/bullet-resistance|publisher=SITEC|access-date=2009-02-14}}</ref> A similar classification system primarily used in the [[United States]] is [[NIJ 0108|NIJ Standard 0108]], the U.S. [[National Institute of Justice]]'s Standard for Ballistic Resistant Protective Materials which includes glass and armor plate.
== Threat Levels ==
The protective strength of a glazed shielding is rated based on the type of munitions, or threat level, it is capable of withstanding. There are 7 main standard threat levels: BR1-BR7 (also written as B1-B7), each corresponding to a different type of [[small arms]] fire. Additionally, there are two other threat levels (SG1 & SG2) corresponding to shotgun munitions.
To be given a particular rating, the glazing must stop the bullet for the specified number of strikes, with multiple strikes placed within 120mm of each other in the test sample which dimensions are 500±5mm x 500±5mm.<ref>{{Cite web |title=EN 1063 protection levels |url=https://militaryvehiclesdata.com/military-dictionary/military-standards/en-1063-protection-levels/ |access-date=2024-12-11 |website=militaryvehiclesdata.com}}</ref> [[File:EN-1063-multi-hit-strike-distance-sample-dimensions.png|thumb|'''EN 1063 multi hit strike distance sample dimensions''']] The glazing should also be shatterproof and produce no [[spalling|spalls]] after each strike. Lastly, the classification levels are numbered in order of increasing protective strength. Thus any sample complying with the requirements of one class also complies with the requirements of previous classes. However, the SG (shotgun) classes do not necessarily comply with BR classes.<ref name=":0">{{cite web|first=Jeremy|last=Watney|url=http://www.ballisticedge.com.au/BSEN1063.htm|title=BS EN1063 2000|publisher=Ballistic Edge Research Laboratory Mechanical Impact Testing|year=2000|access-date=2009-02-14}}</ref><ref>{{Cite web |title=security-consulting-engineers-reading |url=https://www.hephaestusconsulting.com/security-consulting-engineers-reading-img/EN-1063.pdf |access-date=2024-12-11 |website=www.hephaestusconsulting.com}}</ref>
The precise test requirements and bullet types used are as follows: {| class="wikitable" border="1" |+'''[[Euronorm]] Standard For Security Glazing''' |- ! Class ! Weapon ! Caliber ! Type ! Weight (g) ! Range (m) ! Velocity (m/s) ! Impact Energy ! Shots |- | BR1 | Handgun/Rifle | [[.22 long rifle|.22 LR]] | LB/RN | 2,6 ± 0,1 | 10,00 ± 0,5 | 360 ± 10 | 170 J | 3 |- | BR2 | Handgun | [[9×19mm Parabellum]] | FJ/RN/SC | 8,0 ± 0,1 | 5,00 ± 0,5 | 400 ± 10 | 640 J | 3 |- | BR3 | Handgun | [[.357 Magnum]] | FJ/CB/SC | 10,2 ± 0,1 | 5,00 ± 0,5 | 430 ± 10 | 940 J | 3 |- | BR4 | Handgun | [[.44 Magnum]] | FJ/FN/SC | 15,6 ± 0,1 | 5,00 ± 0,5 | 440 ± 10 | 1510 J | 3 |- | BR5 | Rifle | [[5.56×45mm NATO]] | FJ/PB/SCP | 4,0 ± 0,1 | 10,00 ± 0,5 | 950 ± 10 | 1800 J | 3 |- | BR6 | Rifle | [[7.62×51mm NATO]] | FJ/PB/SC | 9,5 ± 0,1 | 10,00 ± 0,5 | 830 ± 10 | 3270 J | 3 |- | BR7 | Rifle | 7.62×51mm NATO | FJ/PB/HC | 9,8 ± 0,1 | 10,00 ± 0,5 | 820 ± 10 | 3290 J | 3 |} <sub>LB</sub> - [[Lead bullet|Lead Bullet]]<br /> <sub>FJ</sub> - [[Full metal jacket (ammunition)|Full Metal Jacket]]<br /> <sub>FN</sub> - Flat Nose<br /> <sub>RN</sub> - Round Nose<br /> <sub>CB</sub> - Cone Bullet<br /> <sub>PB</sub> - [[Pointed bullet|Pointed Bullet]]<br /> <sub>SC</sub> - Soft Core (lead)<br /> <sub>SCP</sub> - Soft Core (lead) & Steel Penetrator<br /> <sub>HC</sub> - [[Armor-piercing bullet|Hard core]], steel hardness > 63 [[Rockwell scale|HRC]]<ref>{{cite web|title=Levels of Protection According EN 1063 |url=http://www.marsarmor.com/Technical%20Info/EN1063.pdf |publisher=MARS Armor |access-date=2009-02-14 |url-status=dead |archive-url=https://web.archive.org/web/20080820004851/http://www.marsarmor.com/Technical%20Info/EN1063.pdf |archive-date=August 20, 2008 }}</ref>
== References == {{reflist}} {{List of EN standards|state=autocollapse}} [[Category:Glass engineering and science]] [[Category:EN standards|#01063]] [[Category:Armour]] {{engineering-stub}}