China Manufacturer boron carbide B4C powder 0.5 micron

 B4C boron carbide powder，also known as B4C is produced from high temperature smelting boric acid and carbon materials in electric furnaces.
Boron carbide is with high hardness up to Mohs’ 9.3, which is the third hard material besides Diamond and CBN.

 

Properties:

1. High temperature resistance, acid-alkali resistance
2. Boron carbide can get bigger Neutron interception area with high Neutron absorb ability.
3. High strength, high chemical stability
4. Low specific gravity

 

 

TYPICAL PHYSICAL PROPERTIES
Appearance	Black powder
Molecular Weight(g/mol.)	55.25515
Specific Heat(cal-mol-c)	12.5
Knoop hardness	2750
Mohs hardness	9.3
Micro Hardness	4950kgf/mm2
Bending strength	Min 400Mpa
Density&phase	2.52g/cm(Solid)
Melting point	2450℃(2623.15K)
Boiling point	＞3500℃(＞3773.15K)
Solubility in water	Insoluble
Crystal structure	Rhombohedral

 

Available sizes：

F-macrogrit  F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220

F-microgrit F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500

Fine powder:-100#,-200#,-325#,60-150#,25um-0,10um-0,3um-0

 

 

 

 

 

 

 

 

size	grit	mean diameter in um	B %	C %	Fe2O3 %	B4C%
F-macrogrit	F40	425	76-80	17-21.5	0.2-0.4	95-99
	F46	355
	F54	300
	F60	250
	F70	212
	F80	180
	F90	150
	F100	125
	F120	106
	F150	75
	F180	75-63
	F220	63-53
F-microgrit	F230	D50=53	75-79		0.3-0.5	95-97
	F240	D50=44.5
	F280	D50=36.5
	F320	D50=29.5
	F360	D50=22.8			0.3-0.6
	F400	D50=17.3
	F500	D50=12.8			0.4-0.8
	F600	D50=9.3	74-79		0.3-0.7	93-97
	F800	D50=6.5			0.4-0.9
	F1000	D50=4.5
	F1200	D50=3.0			0.5-0.9
	F1500	D50=2.0
Fine powder	100#-0	150max	75-80	17-21	0.3 max
	200#-0	90max
	325#-0	45max
	60#-150#	250-75
	25um-0	25max
	10um-0	10max
	3um-0	3max

 

 

Applications:

1. Neutron absorber for nuclear facilities, as reactor control rods and neutron absorbing shielding

2. Anti-radiation coating for protection walls

3. Polishing Sapphire substrate

4. Coating of Wear-resistant electrode

5. Polishing hard alloy as lapping abrasive material

6. Wear resistance liner such as bulletproof board and Armor

7. Anti-oxidant in carbon-bonded refractory mixes

8. Wear parts such as blasting nozzles, wire-drawing dies, powdered metal and ceramic forming dies, thread guides