Description

Boron carbide powder B4C F100

Boron carbide powder B4C F100 is high-grade superhard abrasive material manufactured through high-temperature synthesis, crushing, purification and strict F-standard particle classification. Featuring outstanding hardness, low density, strong chemical stability and excellent self-sharpening property, this F100 grade boron carbide powder delivers consistent cutting performance and has become a preferred abrasive medium for precision industrial surface treatment and fine grinding processes.

The raw material is pure boron carbide with the chemical formula B₄C. After precise crushing and mesh screening, F100 grit achieves uniform particle size distribution and fewer oversize grains. Compared with silicon carbide and fused alumina abrasives, B4C F100 owns higher hardness, making it suitable for processing hard-to-machine workpieces. It resists corrosion against most acids and alkalis, maintaining stable performance under dry and wet grinding conditions.

In sandblasting applications, B4C F100 boron carbide powder removes oxide layers, burrs and surface defects of hard alloys, ceramics and metal components. It can realize uniform matte surface finishing without embedding impurities into workpiece surfaces. Many manufacturers deploy this powder for precision mold cleaning, aerospace part surface treatment and hardware precision deburring.

As a grinding raw material, F100 boron carbide powder is used to produce grinding paste, honing compound and coated abrasives. It supports medium grinding procedures before fine polishing for cemented carbide, sapphire and quartz components. It is also a critical feedstock for sintering boron carbide wear-resistant components such as sandblasting nozzles and sealing rings.

Moreover, B4C F100 powder serves as functional filler for wear-resistant coatings and composite materials. When added into resin or metal matrix composites, it improves surface hardness and abrasion resistance. Thanks to its neutron absorption capability, qualified boron carbide powder can be further processed for nuclear shielding material production.

This F100 grade balances cutting efficiency and surface finish. It is reusable under proper recycling conditions, helping enterprises lower comprehensive production costs. Strict impurity control guarantees stable quality for export-grade industrial customers across machinery, aerospace, new material and surface treatment industries.

Boron carbide properties

High strength and good fracture toughness.
Low density and low specific gravity.
Excellent fire resistance performance.
High temperature hardness and good wear resistance.
Chemical stability, able to withstand the erosion of acidic and alkaline substances.
Strong thermal conductivity.

Physical and technical specifications:

Appearance	Black grain or powder
Molecular Weight(g/mol.)	55.25515
Specific Heat(cal-mol-c)	12.5
Elastic modulus	450-470 Gpa
Knoop hardness	2750 kg/mm2
Mohs hardness	9.3
Micro Hardness	4950 KGF/mm2
Density	2.52g/cm
Melting point	2350℃(2623.15K)
Boiling point	＞3500℃(＞3773.15K)
conductivity	140 s/cm
thermal conductivity	30 – 42 W/M·K
thermal neutron absorption cross section	600 barn
Solubility in water	Insoluble
Crystal structure	Rhombohedral
（CAS NO.)	12069-32-8

Chemical composition:

Chemical	Standard Value	Typical Value
Total Boron (BT)	75-80 %	78.18 %
Free Boron(BF)	≤0.5 %	0.1 %
Boron Oxide（B2O3）	≤1.0 %	0.09 %
Total Carbon (CT)	17-21.5%	19.71 %
Free Carbon (CF)	≤2.0 %	1.24 %
Iron Oxide（Fe2O3）	≤0.5 %	0.16 %
Boron Carbide（B4C）	93-97 %	96.55 %
BT+CT	93-98%	97.89 %

Boron carbide size:

Grit Size	Mean diameter in um
F8	2460
F10	2085
F12	1765
F14	1470
F16	1230
F20	1040
F22	885
F24	745
F30	625
F36	525
F40	438
F46	370
F54	310
F60	260
F70	218
F80	185
F90	154
F100	129
F120	109
F150	82
F180	69
F220	58

Grit Size	Mean grain size ds50-value in μm）
F 230	53.0 ± 3
F 240	44.5 ± 2
F 280	36.5 ± 1.5
F 320	29.2 ± 1.5
F 360	22.8 ± 1.5
F 400	17.3 ± 1
F 500	12.8 ± 1
F 600	9.3 ± 1
F 800	6.5 ± 1
F 1000	4.5 ± 0.8
F 1200	3.0 ± 0.5
F 1500	2.0 ± 0.4
F 2000	1.2 ± 0.3