CEV=C+Mn/6+Cr/5+Mo/5+V/5+Cu/15+Ni/15
Note: Nb, V and Ti may be added if necessary (Nb+V+Ti≤0.22%)
Bulletproof steel plate
Bulletproof steel plate
Keywords：
Bulletproof steel plate
Description
| Class EN | Calibre and type of bullet | Speed m/s | Distance/ m | GRADE 500 | GRADE 550 | GRADE 600 |
| FB2 | 9mm Luger FJ | 400 ± 10 | 5 | 3.0 | ||
| FB3 | .357 Mag FJ/CB/SC | 430 ± 10 | 5 | 3.0 | ||
| FB4 | .357 Mag FJ/CB/SC .44 Mag FJ/FN/SC | 430 ± 10 440 ± 10 | 5 | 3.0 | ||
| FB5 | 5.56x45 FJ/PB (SS109) | 950 ± 10 | 10 | 6.0 | 6 | (5) |
| FB6 | 5.56x45 FJ/PB (SS109) 7.62x51 FJ/PB/SC (NATO Ball) | 950 ± 10 830 ± 10 | 10 | 6.0 | 6 | (5) |
| FB7 | 7.62x51 FJ/PB/HC1 (NATO AP) | 820 ± 10 | 10 | 14.0 | (12,5) | 10 |
Military applications
 |  |  |  |
Civil protections
 |  |  |
Our FD steels with 2 to 20mm in thickness were first developed inChina by employing own equipments and Technologies. The steelswere heat treated with hot rolled plates to gain excellent ballisticperformance, uniform property, good shape and surface quality.
The steels can be used for applications where high ballistic performanceis required, such as armored cars, armored personnel carriers, escortvehicles, VIP cars, security doors, bank counter shield, strongbox,shields, helmet ,et al.
Manufacture process and delivery conditions
Manufacture process: The steel is made in oxygen converter, fully killed, secondary refined and casted into slabs. The slabs are reheated and rolled into coil in TMCP rolling process. After powerful leveling, cutting, heat treatment,and inspection, bulletproof plates are delivered in sheets.
Delivery condition: TMCP, quenched, quenched and tempered etc.
Processing and distribution service: According to customers' requirements, steel plate can be delivered with pretreatment such as blasting, painting etc. Additional services e.g., blanking, bending and machining are also provided.
Steel grades and specification
| Steel grade | HB Hardness, HB typical value | Thickness mm | Width mm | Length mm |
| FD300 | 300 | 2-20 | 850-1800 | 2000-12000 |
| FD370 | 370 | 2-20 | 850-1800 | 2000-12000 |
| FD440 | 440 | 2-20 | 850-1800 | 2000-12000 |
| FD500 | 500 | 2-20 | 950-1800 | 2000-12000 |
| FD600 | 600 | 2-20 | 950-1800 | 2000-12000 |
Chemical composition, wt%
| Steel grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Alt≥ | Cr≤ | Ni≤ | B≤ | CEV Typical value |
| FD300 | 0.22 | 0.5 | 2.0 | 0.020 | 0.015 | 0.015 | 0.5 | 0.5 | 0.005 | 0.60 |
| FD370 | 0.32 | 0.5 | 1.5 | 0.020 | 0.015 | 0.015 | 1.0 | 0.5 | 0.005 | 0.52 |
| FD440 | 0.35 | 1.0 | 1.85 | 0.020 | 0.015 | 0.015 | 1.0 | 0.5 | 0.005 | 0.55 |
| FD500 | 0.50 | 0.5 | 1.70 | 0.020 | 0.015 | 0.015 | 1.2 | 0.8 | 0.005 | 0.62 |
| FD600 | 0.50 | 1.0 | 1.85 | 0.020 | 0.015 | 0.015 | 1.2 | 0.8 | 0.005 | 0.67 |
Mechanical properties
| Steel grade | Thickness | Tensile test | 90° bending | Impact energy | ||
| Yield strength ReH,MPa | Tensile strength Rm,MPa | Elongation A5,% | Bending | -20℃ KV2,J | ||
| FD300 | 2-20 | ≥700 | ≥900 | ≥10 | d=3a | ≥20 |
| FD370 | 2-20 | ≥900 | ≥1050 | ≥10 | - | ≥20 |
| FD440 | 2-20 | ≥1100 | ≥1250 | ≥8 | - | ≥20 |
| FD500 | 2-20 | ≥1250 | ≥1450 | ≥8 | - | ≥20 |
| FD600 | 2-20 | ≥1450 | ≥1750 | ≥6 | - | ≥20 |
Note:1. Transversal specimen is adopted in the tensile test and longitudinal specimen in the impact test;
2. Transversal specimen is used in the bending test. d=bending diameter, a=plate thickness
Dimension, shape, weight and tolerance
Dimension, shape, weight and tolerance satisfy GB/T709-2006 Dimension, shape, weight and tolerances forhot rolled steel plates and sheets
Steels are manufactured by special heat treatmentprocess with superior shape and flatness within ≤3mm/m.
Additional requirements concerning the dimensiontolerance, roughness etc. should be confirmed bysupplier and be customer, and be specified in thecontract.
Ballistic standards and protection grades
steels have excellent ballistic performance and good impact properties.
Standards: GA 164-2005, GJB 1694A-2000 and GJB 59.18-1988.
PD steels cover a large range of thickness, have passed different ballistic standards. Approved ballistic certification reports of PD steels are listed below. Customers can select appropriate steels according to their design.
Steel grade | Typical thickness | Technical conditions |
Gun |
Projectile |
Striking |
Normal angle |
Shooting distance,m |
Note |
| FD300 | 2.85 | GA 164-2005 | 79-type Mini submachine gun | 51B-type 7.62mm handgun | 490-515 | 0 | 5/10/15 | A/B |
FD440 | 5 6 | GJB 1496A- 2000 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm steel core bullet | 828 | 0 | 160 120 | |
| 8 10 12 | GJB 1496A- 2000 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm WO-109C piercing incendiary | 808 | 35 27 23 | 100 | ||
FD500 | 2.3 2.5 | GA 164A- 2005 | 79-type 7.62mm light submachine gun | 51B-type 7.62mm handgun bullet | 490-515 | 0 | 5/10/15 | A/B |
| 4.0 4.2 | 56-type 7.62mm submachine gun | 56-type 7.62mm handgun bullet | 710-735 | 0 | 10/15/30 | C | ||
| 4.8 5.0 | GJB 59.18- 1988 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm steel core bullet | 820-835 | 0 | 10/15/30 | ||
| 10 12 | GJB 1496A- 2000 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm WO-109C piercing incendiary | 800-815 | 23 | 100 | ||
| FD600 | 4.0 4.5 | GJB 59.18- 1988 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm steel core bullet | 820-835 | 0 | 10/15/30 | |
| 10 12 | GJB 1496A- 2000 | 53-type 7.62 mm velocimetry working gun | 53-type 7.62mm WO-109Cpiercing incendiary | 800-815 | 23 | 100 |
Note: Ballistic certification report is available if needed
Drilling Either high speed steel or cemented carbide drillscan be used for drilling.To Work piece should be clamped tightly while milling andwide-space milling cutter is | Bending When cold forming is needed for PD steels,close attention need to be paid to thespringback.High strength usually Mechanical cutting is not recommended for bendingparts. |
Cutting PD steels are suitable for waterjet, laser and plasma cutting. Provided that the | Hot working Heat treatment is not recommended. If a tempering process is needed, please contact the technical customer |
Welding PD steels can be welded with conventional welding methods. Austenitic or low |  |
undefined
Send Inquiry
NOTE: Please leave your email, our professional person will contact you asap!
Get the latest information
Give us your email and you will be updated with the latest events, in detail.