Description

96% B4C Boron carbide W10 7-10 MICRONS LAPPING POWDER

Our 96% B4C Boron Carbide W10 Lapping Powder is a high-precision superhard abrasive material specially sized at 7-10 microns, engineered for professional industrial lapping and fine polishing applications. With a standard B4C purity of 96%, this powder features high hardness, excellent chemical stability and uniform particle distribution, delivering consistent and reliable surface finishing performance for ultra-hard workpieces.

As one of the hardest industrial abrasives, boron carbide ensures strong cutting power and outstanding self-sharpening properties. The stable W10 particle grade avoids oversized grains and fine powder impurities, effectively eliminating scratches, tool marks and oxide layers during precision lapping. It works perfectly for hard alloy, mold steel, ceramic parts, sapphire, optical components and high-precision mechanical surface treatment, achieving smooth and uniform surface roughness.

This professional lapping powder boasts low friability and high wear resistance. It maintains stable abrasive performance during long-term lapping processing, with no particle deformation or excessive powder loss. Featuring acid and alkali resistance as well as high-temperature stability, it adapts to various lapping oil and water-based polishing systems, easy to disperse and mix evenly to make high-grade lapping paste.

Strictly screened and purified, our 96% B4C W10 boron carbide powder guarantees stable batch quality and high finishing accuracy. It is an ideal cost-effective superhard abrasive for precision manufacturing, mold repair, optical processing and high-standard industrial fine lapping scenarios worldwide.

PHYSICAL PROPERTIES

Molecular Weight (g/mol.)	55.25515
Theoretical Density (g/cm3)	2.52
Melting Point (°C)	2450-2723
Boiling Point (°C)	3500
Specific Heat (cal-mol-c)	12.5
Specific Gravity	2.51
Knoop Hardness	2750
Crystallography	Mono-crystalline

TYPICAL CHEMICAL ANALISIS [%]

Size-Grit	Approx Size(microns)	B%	C%	Fe2O3	B+C%
F60	300-250	78-81	17-22	0.2-0.4	97-99
F80	212-180	78-81	17-22	0.2-0.4	97-99
F100	150-125	78-81	17-22	0.2-0.4	97-99
F120	125-106	78-80	17-22	0.2-0.4	96-98
F150	106-75	78-80	17-22	0.2-0.4	96-98
F180	75-63	78-80	17-22	0.2-0.4	96-98
F230	53.0±3.0um	77-80	17-22	0.3-0.5	96-97
F240	44.5±2.0um	77-80	17-22	0.3-0.5	96-97
F280	36.5±1.5um	77-80	17-22	0.3-0.5	96-97
F320	29.2±1.5um	76-79	17-21	0.3-0.6	95-97
F360	22.8±1.5um	76-79	17-21	0.3-0.6	95-97
F400	17.3±1.0um	75-79	17-21	0.4-0.8	94-96
F500	12.8±1.0um	76-79	18-22	0.3-0.7	94-97
F600	9.3±1.0um	74-78	17-21	0.4-0.9	92-94
F800	6.5±1.0um	74-78	17-21	0.4-0.9	92-94
F1000	4.5±0.8um	75-78	18-22	0.1-0.8	90-94
F1200	3.0±0.5um	75-78	18-22	0.1-0.8	90-94
F1500	2.0±0.4um	75-78	18-22	0.1-0.8	90-94
F2000	1.2±0.3um	75-78	18-22	0.1-0.8	90-94
-325	-45um	75-80	17-21	0.1-0.5	95-97

PARTICLE SIZE DISTRIBUTION

MACROGRITS:

F60	+425um	+300um	≤30%	+250um	≥40%	250+212um	≥65%	-180um	≤3%
F70	+355um	+250um	≤25%	+212um	≥40%	+212+180um	≥65%	-150um	≤3%
F80	+300um	+212um	≤25%	+180um	≥40%	+180+150um	≥65%	-125um	≤3%
F90	+250um	+180um	≤20%	+150um	≥40%	+150+125um	≥65%	-106um	≤3%
F100	+212um	+150um	≤20%	+125um	≥40%	+125+106um	≥65%	-75um	≤3%
F120	+180um	+125um	≤20%	≥40%	≥40%	+106+90um	≥65%	-63um	≤3%
F150	+150um	+106um	≤15%	+75um	≥40%	+75+63um	≥65%	-45um	≤3%
F180	+125um	+90um	≤15%	+75um	*	+75+63um	≥40%	-53um	*
F220	+106um	+75um	≤15%	+63um	*	+63+53um	≥40%	-45um	*

MICROPOWDER

CHAPTER Ⅰ（JIS STANDARD）

Size	DO(um)	D3(um)	D50(um)	D94(um)
#240	≤127	≤103	57.0±3.0	≥40
#280	≤112	≤87	48.0±3.0	≥33
#320	≤98	≤74	40.0±2.5	≥27
#360	≤86	≤66	35.0±2.0	≥23
#400	≤75	≤58	30.0±2.0	≥20
#500	≤63	≤50	25.0±2.0	≥16
#600	≤53	≤41	20.0±1.5	≥13
#700	≤45	≤37	17.0±1.5	≥11
#800	≤38	≤31	14.0±1.0	≥9.0
#1000	≤32	≤27	11.5±1.0	≥7.0
#1200	≤27	≤23	9.5±0.8	≥5.5
#1500	≤23	≤20	8.0±0.6	≥4.5
#2000	≤19	≤17	6.7±0.6	≥4.0
#2500	≤16	≤14	5.5±0.5	≥3.0
#3000	≤13	≤11	4.0±0.5	≥2.0
#4000	≤11	≤8.0	3.0±0.4	≥1.8
#6000	≤8.0	≤5.0	2.0±0.4	≥0.8
#8000	≤6.0	≤3.5	1.2±0.3	≥0.6

CHAPTER Ⅱ（FEPA STANDARD）

Size	D3(um)	D50(um)	D94（um)
F230	＜82	53.0±3.0	>34
F240	＜70	44.5±2.0	>28
F280	＜59	36.5±1.5	>22
F320	＜49	29.2±1.5	>16.5
F360	＜40	22.8±1.5	>12
F400	＜32	17.3±1.0	>8
F500	＜25	12.8±1.0	>5
F600	＜19	9.3±1.0	>3
F800	＜14	6.5±1.0	>2
F1000	＜10	4.5±0.8	>1
F1200	＜7	3.0±0.5	>1(at 80%)
F1500	＜5	2.0±0.4	>0.8(at 80%)
F2000	＜3.5	1.2±0.3	>0.5(at 80%)

Mainly Applications

Application of B4C in national defense industry

B4C can be used to produce bulletproof materials, such as bulletproof plate in bulletproof vests, ceramic bulletproof tile in military airplane pilot cabin and bulletproof plate in modern armored personnel vehicle and tank. It can also be used to produce the nozzles of gun and artillery in munitions industry.

For Nuclear Industry

B4C can be prepared into controlling bars, adjusting bars, accident bars, safety bars, screen bars, radiation resistant B4C tilts, plate, or neutron absorber(prepared with high B10 content powders),and radiation resistant layer for atomic reactor together with cement which is the most important functional component only next to reactor fuel.

For Refractories Industry

B4C can be used as anti-oxidation agent for low carbon magnesia carbon brocks and castable. It can be applied in key positions which suffer from serious erosion and high temperature, such as ladle, taphole(nozzle),sliding plate and stopper.

For Other Engineering Ceramic Materials

B4C can be prepared into nozzles for sand spraying machine and high pressure water cutter, ring seal, mould for ceramics etc

For Normal Industry Fields

B4C is used to prepare: high grade wear-resistant welding rods to strength the wear resistance of welding face; grinding and polishing materials, water cutting abrasives and polishing materials for diamond abrasives tools; polishing and grinding of jewels.

Application of B4C on Electrical Property

B4C-graphite thermocouple is composed of graphite pipe, B4C bar and BN Lining.In inert gases and vacuum, its service temperature is 2200℃,the linear relation of electric potential difference and temperature is good

Application of B4C as Chemical Material

After being activated nu halogens, B4C powder can be used as boronation agent of steel and other alloys for boronizing on the steel surface, forming a thin iron boride layer, increasing the strength and wear resistance of the materials.