EN 1063
Encyclopedia
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 ballistic
classification system by which armored vehicles and structures are tested and rated. A similar classification system primarily used in the United States
is NIJ Standard 0108, the U.S. National Institute of Justice
's Standard for Ballistic Resistant Protective Materials which includes glass and armor plate.
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. The glazing should also be shatterproof and produce no 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.
The precise test requirements and bullet types used are as follows:
LB - Lead Bullet
FJ - Full Metal Jacket
FN - Flat Nose
RN - Round Nose
CB - Cone Bullet
PB - Pointed Bullet
SC - Soft Core (lead)
SCP - Soft Core (lead) & Steel Penetrator
HC - Hard core, steel hardness > 63 HRC
European Committee for Standardization
The European Committee for Standardization or Comité Européen de Normalisation , is a non-profit organisation whose mission is to foster the European economy in global trading, the welfare of European citizens and the environment by providing an efficient infrastructure to interested parties for...
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 ballistic
Terminal ballistics
Terminal ballistics, a sub-field of ballistics, is the study of the behavior of a projectile when it hits its target. It is often referred to as stopping power when dealing with human or other living targets. Terminal ballistics is relevant both for small caliber projectiles as well as for large...
classification system by which armored vehicles and structures are tested and rated. A similar classification system primarily used in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
is NIJ Standard 0108, the U.S. National Institute of Justice
National Institute of Justice
The National Institute of Justice is the research, development and evaluation agency of the United States Department of Justice. NIJ, along with the Bureau of Justice Statistics , Bureau of Justice Assistance , Office of Juvenile Justice and Delinquency Prevention , Office for Victims of Crime ,...
'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 armsSmall arms
Small arms is a term of art used by armed forces to denote infantry weapons an individual soldier may carry. The description is usually limited to revolvers, pistols, submachine guns, carbines, assault rifles, battle rifles, multiple barrel firearms, sniper rifles, squad automatic weapons, light...
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. The glazing should also be shatterproof and produce no 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.
The precise test requirements and bullet types used are as follows:
| Class | Weapon | Caliber | Type | Weight (g) | Range (m) | Velocity (m/s) | Impact Energy | Shots |
|---|---|---|---|---|---|---|---|---|
| BR1 | Handgun/Rifle | .22 LR | LB/RN | 2,6 ± 0,1 | 10,00 ± 0,5 | 360 ± 10 | 170 J | 3 |
| BR2 | Handgun | 9x19mm 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 | 5.56x45mm NATO | FJ/PB/SCP | 4,0 ± 0,1 | 10,00 ± 0,5 | 950 ± 10 | 1800 J | 3 |
| BR6 | Rifle | 7.62x51mm NATO | FJ/PB/SC | 9,5 ± 0,1 | 10,00 ± 0,5 | 830 ± 10 | 3270 J | 3 |
| BR7 | Rifle | 7.62x51mm NATO | FJ/PB/HC | 9,8 ± 0,1 | 10,00 ± 0,5 | 820 ± 10 | 3290 J | 3 |
LB - Lead Bullet
FJ - Full Metal Jacket
FN - Flat Nose
RN - Round Nose
CB - Cone Bullet
PB - Pointed Bullet
SC - Soft Core (lead)
SCP - Soft Core (lead) & Steel Penetrator
HC - Hard core, steel hardness > 63 HRC
Rockwell scale
The Rockwell scale is a hardness scale based on the indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single...