China Hunan High Broad New Material Co.Ltd
China Hunan High Broad New Material Co.Ltd. Professional Magnesium alloy products & Advanced Ceramic products Manufacturer
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NIJ IV Alumina Al2O3 Ballistic Ceramic Tiles Armour For Vehicle , High Hardness
NIJ IV Alumina Ceramic Armour Plate For Vehicle
Material Comparation Chart:
| Item | Al2O3 | SiC | B4C |
| Density | 3.5g/cm3 | 3.1g/cm3 | 2.4-2.65g/cm3 |
| Hardness | HV1650 | HV2750 | HV3300 |
| Flexural strength | 290 Mpa | 380 Mpa | 400-650 Mpa |
| Compressive strength | 850 Mpa | 3970 Mpa | 4100 Mpa |
| Fracture toughness | 4.8 Mpa.m1/2 | 4.0 Mpa.m1/2 | 4.5-7.0 Mpa.m1/2 |
| Thermal Conductivity | 20 m0k | 120m0k | 29 m0k |
Specifications:
| Density: 3.6g/cm3 Knoop Hardness: 1800 Flexural strength: 300 Mpa Compressive strength: 1000 Mpa Fracture toughness: 4.8 Mpa.m1/2 Coefficient of thermal expansion: 4.8x106 Thermal Conductivity: 20 m0k |
Advantage:
· High hardness next to diamond.
· Extremely wear and abrasion resistance.
· High flexural strength at room or high temperature.
· Excellent thermal shock resistance due to its low thermal expansion and high thermal conductivity.
· Excellent corrosion resistance.
· High temperature resistance.
Finished products data:
| Size | 165cm~185cm The large size (L)is suited to height ≥175cm,the small size(S) is suited to height≤175cm |
| Material | High strength, high tenacity, fire-retardant, energy absorbing engineering PC |
| Anti-stab Performance | Front and back of armor can stand 20J puncture kinetic energy |
| Anti-impact Performance | Can stand 120J impact kinetic energy |
| Strike Energy Absorption Performance | The protective coating of front and back bear 100J kinetic energy impact, the daub creasing<8mm |
| Effective Protective Area | L≥1.2 square meter S≥1.1 square meter |
| Antiflaming Performance | Plastic protective pieces is in line with FV-2 level,oxygen index of lining>28%. The afterflame time less than 10s without fire sources |
| Acclimatization Temperatur | -20°C~+55°C |
| Weight | <7 kg(Normal) |
| Standard | GA420-2008 <Police Anti-Riot Suit |
Application of Al2O3 in National Defence Industry: B4C is the material of bulletproof products ,such as bulletproof plate/vests,ceramic bulletproof tile in military airplane
pilot cabin,and modern armored personnel vehicle and tank,can bring obvious economic returns and military benefits .
Application of Al2O3 in Nuclear Industry:
B4C can be prepared into controlling bars,adjusting bars,accident bars,safety bars,screen bars,radiation resistant
B4C tilts,plates or neutron absorber,andradiation resistant layer for atomic reactor together with cement which is the most important functional
competent only next to reactor fuel.
Application of Al2O3 in Refractory Industry:
B4C can be used as antioxidation agent for low Carbon magnesia carbon bricks and castables. It can be applied in key positions which suffer from serious erosion and high
temperature,such as ladle, taphole(nozzle),sliding plates,and stopper.
Cerifications:
