Main Component:
Boron Carbide (B₄C), content ≥ 99% (hot-pressed dense body)
Porosity:
≤ 1%–3%, near theoretical density (~2.48–2.52 g/cm³), dense sintered body with minimal open porosity
Service Temperature:
Up to 500℃ in continuous operation; melting point ~2450℃, suitable for high-temp blasting environments
Hardness / Wear Rating:
Mohs hardness ~9.3 (Vickers ~2800–3000 HV), microscopic hardness ≥ 3500 kgf/mm²; wear life typically 3–10× that of tungsten carbide nozzles depending on abrasive media
Key Properties:
Extreme abrasion resistance against hard grit (Al₂O₃, SiC, garnet); chemically stable in most acids/alkalis (except HF and hot conc. alkali); low density (~60% lighter than tungsten carbide)
Core Application:
Abrasive sandblasting (metal surface descaling, paint/rust removal, shot peening) accounts for >70% of consumption; also used in waterjet cutting auxiliary nozzles and specialty high-wear spray liners
Product Details
Ceramic Sand Blasting Nozzle
The B4C tubes are in very high hardness, excellent wear resistance and the boron carbide won’t react with acid-base. High or low temperature resistance, high pressure resistant, density≥2.48g/cm³,micro hardness≥3500kgf/mm², TRS≥400Mpa, melting point is 2450℃
A significant feature of boron carbide ceramics is their high hardness, with a microhardness of approximately 50000 MPa (50 GPa), second
only to diamond (90-100 GPa) and CBN (80-90 GPa). Their grinding efficiency can reach 60% -70% of that of diamond, which is twice that of SiC and 1-2 times that of corundum. They have good acid and alkali resistance and a small coefficient of thermal expansion (4.5 x 10-6 ℃), resulting in good thermal stability, but poor impact resistance and high brittleness.
Boron Carbide is one of the hardest man-made materials available in commercial quantities that has a finite melting point low enough to permit its relatively easy fabrication into shapes.
A remarkable feature of boron carbide ceramics is very hard, its hardness is about 50000MPa (that is, 50GPa), second only to diamond (90~ 100GPa) and CBN(80 ~ 90GPa), boron carbide ceramic part can be used as abrasives, cutting tools, wear-resistant parts nozzles, bearings, etc.
B₄C nozzles exhibit exceptionally high hardness and outstanding wear resistance. Boron carbide is chemically inert to most acids and alkalis, and performs reliably under both high and low temperature as well as high-pressure conditions,density≥2.46g/cm³.With above performance, now many customers choose the boron carbide nozzles to replace the nozzles made from tungsten carbide, silicon carbide, silicon nitride, aluminium oxide, zirconium oxide, etc.
Born Carbide Nozzle
The life time is 10 times longer than usual ceramic nozzles. They are good for cleaning, even small areas: weldments, grillwork, and railings.
It can be used with water from a tap or with rust inhibitors introduced through any simple pump, no special equipment is required.
If your needed a non-standard nozzle, we also can produce it for you.
Boron carbide Advantages
Boron carbide, alias black diamond, formula of B4C, usually is black powder.it is one of the hardest three known materials (the
other two for diamond and cubic boron nitride), used to tanks armor, Body armor and many industrial products.
High temperature resistance
Abrasion-resistance
Light unit weight
Long working life
• Venturi nozzle
• Straight bore nozzle
• Banana curved nozzle
• Stick-up blast nozzle
• Internal pipe blast nozzle
• Water induction nozzle
• Nozzle liner
• Sandblasting couplings and holders
• Blast gun
• Sandblast accessories
boron carbide tube Advantages
(1) Extreme hardness and wear resistance
(2) Exceptional corrosion reistance
(3) Good mechanical strength
(4) Superior anti-oxidation
(5) Outstanding thermal shock resistance
(6) Low thermal expansion coefficient
(7) High thermal conductivity
Features of boron carbide tubes
1.Long working lifetime: its working lifespan is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.
2. High thermal conductivity: high-density body and low apparent porosity greatly improve its heat conductivity
3. New-style materials: new heat conductivity material ensures faster heat conductivity and pollution-free product, reduces adherent slag.
4. Resistance to corrosion:better anti-corrosion than normal clay-crucible.
5. Resistance to oxidation: advanced process dramatically improves its oxidation resistance, which ensures persistent heat conductivity and long working lifetime.
6. High-strength: high-density body and logical structure make the product better compression property.
7. Eco-friendly: energy-efficient and pollution-free, not only ensure metal product purity, but also ensure sustainable development on environment.
Application: By utilizing the high hardness of boron carbide ceramics, they can be used as abrasives, cutting tools, wear-resistant parts nozzles, bearings, axles, etc. By utilizing its good thermal conductivity, low coefficient of thermal expansion, and ability to absorb thermal neutrons, high-temperature heat exchangers and control agents for nuclear reactors can be manufactured. By utilizing its excellent acid and alkali resistance, chemical vessels, molten metal crucibles, and other materials can be made.
Applications of B4C Ceramic Spray Gun
1. It is applied to agricultural irrigation, changing the traditional irrigation mode, reducing the frequency of equipment replacement and saving costs.
2. It is applied in spraying. During operations such as phosphating, passivation, and degreasing on the surface of metal parts, it can be used to spray paint on metal parts and can operate in high temperature environments.
• TPSS Si-Impregnated Silicon Carbide Products
• High-Purity Silicon Parts
• FPD Related Products
• General Industrial Products
• Automotive, Electric & Mechanical Products
• Bio and Medical Related Products
We can design and produce various shapes and sizes of boron carbide nozzles, please feel free to contact us if you have any question or inquiry. We will be glad to quote and service you.
Parameter
| Name | Unit | B4C |
| Density | g/cm³ | >2.48 |
| Porosity | % | <0.5 |
| Vickers Hardness | HV1(GPa) | 26 |
| Young's Modulus | GPa | 410 |
| Flexural Strength | MPa | 460 |
| Compressive Strength | MPa | >2800 |
| Fracture Toughness | MPa·m⁰.⁵ | 5 |
| Coefficient of thermal expansion (25℃-500℃) | 10⁻⁶/K | 4.5 |
| Coefficient of thermal expansion (500℃-1000℃) | 10⁻⁶/K | 6.3 |
| Thermal conductivity at 25℃ | W/mK | 36 |
| Specific electrical resistance at 25℃ | Ω·cm | 1 |
Development History
Patents and certification
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