List of international standards for bulletproof glass

In terms of technical content, this standard is not equivalent to the United States UL 752:1995 'Bulletproof Glass', and refers to the British BS 5051:1988 'Bulletproof Glass', ASTM F1233:1995 'Test Methods for Bulletproof Glass Materials and Systems' and other standards. This standard only stipulates the test methods and requirements for bulletproof performance, and the corresponding provisions of GB 9656-1996 'Safety Glass for Automobiles' and GB 9962-1999 'Laminated Glass' are used for other properties. 

  This standard is proposed by the National Building Materials Industry Administration. 

  This standard is centralized by the Institute of Glass and Special Fibers of the China Academy of Building Materials Science. 

  This standard is drafted and interpreted by the Institute of Glass and Special Fibers of the China Academy of Building Materials Science. 

  Participating drafting units of this standard: Weapons Industry Civilian Firearms and Ammunition Quality Supervision and Quality Inspection Center, Shandong Laiyang Great Wall Safety Glass Factory, Guangdong Lunjiao Automobile Glass Co., Ltd., China Southern Glass Group Co., Ltd. 

  The main drafters of this standard: Shi Xinyong, Liu Xiumin, Mo Jiao, Dai Lei, Wang Yingzhou, Li Kuishu. 

  National Standard of the People's Republic of China

  Bulletproof glass

  Bullet resistant glazing

  GB  17840-1999

  1 range

  This standard stipulates the classification, performance requirements, test methods, inspection rules, packaging, marking, transportation and storage of bulletproof glass. 

  This standard is applicable to bulletproof glass for automobiles, buildings and other uses. 

  2 Reference standard

  The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. 

  GB/T 6544-1986 corrugated cardboard

  GB 9656-1996 Safety glass for automobiles (available for certification)

  GB 9962-1999 Laminated glass (eqv JIS R3205;1989)

  GB 11614-1999 Float glass

  GB/T 17340-1998 The size, shape and appearance of automotive safety glass

  JC/T 512-1993 Automobile safety glass packaging

  JC/T 632-1996 Automotive Safety glass Terminology

  3 definitions

  This standard adopts the definition of JC/T 632 and the following definitions. 

  3.1 Class L bulletproof glass L-bullet resistant glazing

  It can block the penetration of the warhead, and the splashes on the back of the impacted glass should not penetrate the bulletproof glass of the test card. 

  3.2 Class M bulletproof glass M-bullet resistant glazing

  Can block the penetration of the warhead, there are splashes on the back of the impacted glass, but the splashes should not be embedded in the bulletproof glass on the test card. 

  3.3 Class H bulletproof glass H-bullet resistant glazing

  Bulletproof glass that can block the penetration of the warhead, and there is no debris peeling off on the back of the impacted glass. 

  3.4 impact face attack face

  During the shooting test, it was facing the bulletproof glass surface of the muzzle of the firearm. It is generally determined by the manufacturer and clearly marked. 

  3.5 shooting distance test range

  When shooting, the vertical distance between the muzzle of the firearm and the surface of the impact surface of the bulletproof glass sample. 

  3.6 Bullet velocity range bullet velocity

  The minimum to maximum muzzle velocity range of a certain firearm warhead. 

  3.7 Bouncing point distance striking distance

  After the sample is shot, the distance between the center of the ejection point and the center of the ejection point. 

  3.8 Test card witness card

  A kind of corrugated cardboard placed behind the glass to test for glass splashes. 

  3.9 penetration

  After the bulletproof glass is shot, through holes or cracks that can pass through the air appear on the glass. 

  3.10 Splatter glass splinter

  After the bulletproof glass is shot, the fragments fly away from the glass body. 

  3.11 Effective shooting fair hit

  Shots that meet the requirements of Table 3, or shots that meet any of the following requirements, are valid shots：

  a) After shooting, the measured bullet velocity is less than the minimum speed of the specified bullet velocity range, and the glass sample penetrates as a result of the shooting.；

  b) After shooting, the measured bullet velocity is greater than the maximum speed of the specified bullet velocity range, which does not affect the shooting of the bulletproof performance of such glass samples.；

  c) After shooting, the measured distance from the bullet landing point is less than the specified distance, and other shooting that meets the requirements of Table 3 and does not affect the determination of the bulletproof performance of such test samples；

  d) After shooting, the measured distance from the ejection point is greater than the specified distance, and the glass sample penetrates as a result of the shooting. 

  3.12 Invalid shot unfair hit

  Shots other than effective shots are invalid shots. 

  4 Product categories

  4.1 Classification

  4.1.1 Classification according to the bulletproof properties of bulletproof glass：

  a) Class L bulletproof glass，

  b) Class M bulletproof glass；

  c) Class H bulletproof glass. 

  4.1.2 Classification by application：

  a) Q1 Bulletproof glass for automobiles；

  b) J1 bulletproof glass for buildings and other uses. 

  4.2 Classification

  Bulletproof glass of the same category is graded as follows according to the size of anti-firearms and bullet-proof capabilities：

  a) F64 level can prevent Type 64 7.62mm pistol；

  b) F54-level anti-54 type 7.62mm pistol；

  c) F79 class can prevent Type 79 7.62mm light submachine gun；

  d) F56 class can defend against 56 type 7.62mm submachine gun；

  e) FJ79 class can prevent Type 79 7.62mm sniper rifle，

  The performance requirements of the firearms and bullets used in each level shall comply with the provisions of Table 3. 

  4.3 Product labeling

  Each product should be clearly marked with the standard code, bulletproof grade, category and impact surface of the product. 

  All kinds of bulletproof glass that meet the requirements of this standard can be marked in the product mark with their grade and category symbols according to Table 1. 

  Table 1

 Rank symbol

 Performance category

 Rank symbol

 Performance category

 F64-L

 Class L bulletproof glass

 F56-M

 Class M bulletproof glass

 F54-L

 Class L bulletproof glass

 FJ79-M

 Class M bulletproof glass

 F79-L

 Class L bulletproof glass

 F64-H

 Class H bulletproof glass

 F56-L

 Class L bulletproof glass

 F54-H

 Class H bulletproof glass

 FJ79-L

 Class L bulletproof glass

 F79-H

 Class H bulletproof glass

 F64-M

 Class M bulletproof glass

 F56-H

 Class H bulletproof glass

 F54-M

 Class M bulletproof glass

 FJ79-H

 Class H bulletproof glass

 F79-M

 Class M bulletproof glass

 Example: For F46 class L automobiles, the mark of bulletproof glass is: GB****-** F46-L-Q

  5 requirements

  The technical requirements of bulletproof glass for different purposes shall comply with the corresponding provisions of Table 2. 

 Table 2 Technical Requirements and Test method terms

 project

 Bulletproof glass for automobiles

 Bulletproof glass for construction and other purposes

 GB9656-1996

 GB/T17340-1998

 GB9962-1999

 Technical requirements

 Test method

 Technical requirements

 Test method

 Technical requirements

 Test method

 Dimensional deviation

 ——

 ——

 5.1

 7.1

 5.3

 6.3

 Consistency

 ——

 ——

 5.2

 7.3

 ——

 ——

 Appearance quality

 ——

 ——

 6

 7.4

 5.2

 6.2

 thickness

 5.1

 6.1

 ——

 ——

 5.3

 6.3

 Transmittance

 5.2

 6.2

 ——

 ——

 5.5

 6.5

 Sub-image deviation

 5.3

 6.3

 ——

 ——

 ——

 ——

 Optical distortion

 5.4

 5.4

 ——

 ——

 ——

 ——

 Color recognition

 5.5

 5.6

 ——

 ——

 ——

 ——

 Heat resistance

 5.7

 6.7

 ——

 ——

 5.7

 6.7

 Radiation resistance

 5.8

 6.8

 ——

 ——

 5.9

 6.9

 Moisture resistance

 5.9

 6.9

 ——

 ——

 5.8

 6.8

 Bulletproof performance

 This standard 5.2 Bulletproof Ability and Chapter 6 Test Method Clause

 5.1 Material

  Bulletproof glass should be made of glass materials that meet the following standards or materials that meet the corresponding technical conditions or order document requirements. 

  5.1.1 Glass material

  Float glass should meet the requirements of GB 11614. 

  The rolled glass should meet the requirements of the corresponding technical conditions. 

  5.1.2 Plastic transparent material

  Polycarbonate vinegar board and acrylic cool board should meet the corresponding technical conditions. 

  5.1.3 Intermediate layer material

  When there are no special requirements, polyvinyl butyral and polyurethane intermediate films are generally used, which should meet the requirements of the corresponding technical conditions or the requirements of the order documents. 

  5.1.4 Other materials

  Other new types of materials used for processing into high-strength and lightweight bulletproof glass. 

  5.2 Bulletproof ability

  Three samples were taken for each category and grade of bulletproof glass for testing, and the number of shots required for each sample met the requirements of Table 3. 

  For bulletproof glass used at room temperature, the sample should meet the requirements of a) in 6.2 of this standard, and the bulletproof performance should meet the requirements of Table 3. 

  For bulletproof glass used in special temperature environments, each sample should be required to be tested at room temperature, low temperature, and high temperature. The sample should meet this standard 6.  2 requirements, the bulletproof performance should meet the requirements of Table 3. 

  When selecting firearms and bullets that are different from those specified in Table 3 for bulletproof capability testing, they can be agreed by both supply and demand, but the performance parameters of firearms and bullets must be indicated in the report. 

 Table 3 Performance requirements of specific firearms and bullets at all levels

 Bulletproof grade

 Firearm type

 Bullet type

 Bullet speed range

    m/s

 energy

    j

 Shooting distance

    m

 Number of rounds fired

 Bounce point distance

    mm

 Bulletproof ability recognition

 F46

 Type 64 7.62mm

      pistol

 Type 64 7.62mm

      Pistol bullet (lead core)

      4.72～4.87g

 300～320

 212.4～249.3

 3

 3

 100±10

      The bouncing point is an equilateral triangle

 L

      M

      H

 F54

 Type 54 7.62mm

      pistol

 51-1 type 7.62mm

      Pistol bullet (steel core)

      5.56～5.69

 420～440

 490.4～550.8

 3

 3

 100±10

      The bouncing point is an equilateral triangle

 L

      M

      H

 F79

 Type 79 7.62mm

      Light submachine gun

 51-1 type 7.62mm

      Pistol bullet (steel core)

      5.56～5.69

 480～515

 640.5～754.6

 10

 3

 100±20

      The bouncing point is an equilateral triangle

 L

      M

      H

 F56

 Type 56 7.62mm

      Submachine gun

 Type 56 7.62mm

      Ordinary bullet

      7.75～8.05g

 710～725

 1953.4～2115.6

 15

 3

 100+30-10

      The bouncing point is an equilateral triangle

 L

      M

      H

 FJ79

 Type 79 7.62mm

      Sniper rifle

 Type 53 7.62mm

      Ordinary bullet (steel core)

      9.45～9.75g

 830～870

 3255～3689.9

 50

 1

 Style center

      φ50mm

      Within range

 L

      M

      H

 6 Test method

  6． 1st test condition

  Except for special regulations, the test should be carried out under the following conditions：

  Temperature: 20℃±5℃；

  Atmospheric pressure: 8.60X104～1.06 X 105 Pa  ;

  Relative humidity: 40%-80%. 

  6.2 Sample

  The sample must be made of the same material as the product and under the same process conditions. The overall size of the sample is a square of 420mm±5mm. There are three samples in total, and at least one extra sample is provided for backup. 

  a) Room temperature test: the sample should be placed in an environment of 20℃±5℃ for 3 h,

  b) Low temperature test: The sample should be placed at -29℃±3℃ for 3h, then taken out for shooting test immediately. 

  c) High temperature test: The sample should be placed at 49℃±3℃ for 3h, then taken out for shooting test immediately. 

  6． 3 Test equipment

  6.3.1 Test card

  The test card is about 3 in thickness.  2 mm, corrugated cardboard in line with the S-3.2 category specified in GB/T 6544, placed about 450 mm behind the glass under test, the area is not less than 600 mm X 600 mm. 

  6.3.2 Test stand

  a) The test stand is made of metal materials and has sufficient strength to keep the position of the sample unchanged during the test.·

  b) The test stand should ensure that the sample can be installed vertically, and clamp the left and right sides of the sample, with at least three fixed points on each side, and the contact surface between the frame and the sample should be glued with rubber strips at least 15 mm wide and 3 mm thick. The test stand should ensure that the test card is on the same axis as the geometric center of the sample. 

  a) The test stand should be designed to be able to install test samples of different thicknesses of glass, and to ensure that there is a clear shooting area of 350 mm X 350 mm, and it is easy to move to meet the needs of different shooting distances. 

  d) The position of the test card should be fixed and 450 mm away from the nearest surface of the glass on the opposite test stand. 

  e) A safe protective bunker should be established to protect the safety of operators, and a weapon firing remote control system should be installed if necessary.·

  6.3.3 Speed measurement system

  In order to determine the speed of the warhead, a suitable speed measuring device should be equipped between the firearm and the test sample. The test accuracy should be less than 0.5%. Measuring distance from the muzzle 1.  The speed of the warhead at 5 m. 

  6.4 Test procedures

  6.4.1 According to the requirements of the bulletproof performance level to which the product belongs, determine the firearm, bullet type, and shooting distance according to Table 3. 

  6.4.2 Install the sample that meets the specified requirements on the test stand, and make sure that the impact surface of the sample is facing the muzzle of the firearm and perpendicular to the shooting direction. 

  6.4.3 In the center of the sample，