armour-plateArmor & ballistic steel plate is designed for a wide variety of military specifications and structural uses that require armor steel plate approved by all US departments and agencies for combat and defense applications.

this plates are available as Quenched and Tempered plates. The steel is produced to provide an optimal combination of hardness, toughness and weldability. This is a fully killed fine grain steel that is also calcium treated and vacuum degassed to achieve low sulphur levels and a very low inclusion content. These processes insure adequate toughness in addition to the high hardness.

The plates are heat treated in a roller quenching plant that subjects the entire plate to a rapid high volume water quench. The high cooling rate ensures maximum exploitation of the alloying elements to give the required properties throughout the plate thickness. The 3.5mm and 4.5mm RB 390 plates are heated and then quenched in a water cooled press. These plates are not subsequently tempered.

This type of steel has been specifically developed to provide human protection through its ability to withstand the impact of projectiles fired from a variety of lethal weapons.


Specification

Overview
The quenched and tempered protection plates are used in construction of civil and military equipments which are designed to optimize ballistic performance for protection against bullets, projectiles and shaped charges
Application
Vehicle armouring, sentry boxes, observation posts, MBT etc.
Grade
Armour Steel
Supply Condition
Quenched & Tempered
Size Thickness Width Length
4-20 mm upto 1500 mm upto 6000 mm
21-100 mm upto 1800 mm


Classification and requirements for tests with handguns and rifles

 

Class
type of weapon
calibre
munition
Test conditions of the shot
Type
mass g
Firing Distance M
Firing speed m/s
FB 1
rifle
22 LR
L/RN
2,6 ± 0,1
10 ± 0,5
360 ± 10
FB 2
handgun
9 mm Luger
FJ(1)/RN/SC
8,0 ± 0,1
5 ± 0,5
400 ± 10
FB 3
handgun
357 Mag.
FJ(1)/CB/SC
10,2 ± 0,1
5 ± 0,5
430 ± 10
FB 4
handgun
357 Mag.
FJ(1)/CB/SC
10,2 ± 0,1
5 ± 0,5
430 ± 10
handgun
44 Rem. Mag.
FJ(2)/FN/SC
15,6 ± 0,1
5 ± 0,5
440 ± 10
FB 5
rifle
5,56 x 45*
FJ(2)/PB/SCP1
4,0 ± 0,1
10 ± 0,5
950 ± 10
FB 6
rifle
5,56 x 45*
FJ(2)/PB/SCP1
4,0 ± 0,1
10 ± 0,5
950 ± 10
7,62 x 51
FJ(1)/PB/SC
9,5 ± 0,1
10 ± 0,5
830 ± 10
FB 7
rifle
7,62 x 51**
FJ(2)/PB/HC1
9,8 ± 0,1
10 ± 0,5
820 ± 10
L
Lead bullet
CB
Cast Bullet
FJ
Full-jacketed bullet
FN
Flat Nose bullet
HC1
Hard Cast bullet, mass (3,7 ± 0,1 g), hardness over 63 HRC
PB
Pointed nose bullet
RN
Round nose bullet
SC
Soft core bullet (Lead)
SCP1
Soft-centre projectile (Lead) with steel reinforcement (Type SS 109)
FJ(1)
Full-jacketed bullet , steel
FJ(2)
Full-jacketed bullet , copper
*
In order to meet the requirements for calibre (5.56 x 45), a range of (178 ± 10 mm) is recommended
**
In order to meet the requirements of class FB 7, a range of (254 ± 10 mm) is recommended
Note 1:If only one shot is fired, the test distance can be reduced, in order to achieve the accuracy required by EN 1523 : 1998, section 6. In this case it may not be possible to measure the firing speed.
Note 2: In order to be classified FB 4 or FB 6, the material has to be tested with both of the above mentioned types of weapon.

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