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Boron Carbide is a high performance abrasive material with chemical and physical properties similar to diamond (chemical resistance and hardness). It is so hard that is has been nicknamed "Black Diamond", and has become one of the leading grinding materials. Ceramic grades as well as nuclear grades for neutron absorption are available.
Physical Properties | |
Appearance |
Black, Solid, Odourless, Power |
Oxidation Temperatur |
500 oC |
Melting Point |
2450oC |
Hardness Moh |
9.6 |
Hardness Knoop |
2800 |
Specific Gravity |
2.52g/cc |
Boron Carbide Powder Chemical Composition (% by weight) | ||||||
Grain No. |
Basic Grain |
T.B% |
T.C% |
Fe2O3% |
Si% |
BC% |
F60 |
250 |
77-80 |
19-21 |
0.25 |
0.2 |
96-98 |
F70 |
212 |
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F80 |
180 |
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F90 |
150 |
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F100 |
125 |
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F120 |
106 |
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F150 |
75 |
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F180 |
75-63 |
76-79 |
17-19 |
0.25 |
0.2 |
95-97 |
F220 |
63-53 |
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F230 |
53+/_3.0 |
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F240 |
44.5+/_2.0 |
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F280 |
36.5+/_1.5 |
75-79 |
17-20 |
0.3 |
0.3 |
93-97 |
F320 |
29.2+/_1.5 |
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F360 |
22.8+/_1.5 |
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F400 |
17.3+/_1.0 |
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F500 |
12.8+/_1.0 |
74-78 |
17-20 |
0.4 |
0.4 |
90-94 |
F600 |
9.3+/_1.0 |
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F800 |
6.5+/_1.0 |
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F1000 |
4.5+/_0.8 |
73-77 |
17-20 |
0.5 |
0.4 |
89-92 |
F1200 |
3.0+/_0.5 |
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F1500 |
3+/_0.8 |
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60#-150# |
250-75 |
76-80 |
18-21 |
<0.3 |
<0.5 |
95-98 |
-100mesh |
<150 |
75-79 |
17-22 |
<0.3 |
<0.5 |
94-97 |
-200mesh |
<90 |
74-79 |
17-22 |
<0.3 |
<0.5 |
94-97 |
-325mesh |
<45 |
73-78 |
19-22 |
<0.5 |
<0.5 |
93-97 |
-25μm |
<25 |
73-78 |
19-22 |
<0.5 |
<0.5 |
91-95 |
-10μm |
<10 |
72-76 |
18-21 |
<0.5 |
<0.5 |
90-92 |
Other sizes can be also available according to customer's requirements. | ||||||
Boron Carbide Powders for Radiation Shielding purpose. | |||
Item |
Grade A |
Grade B |
Grade C |
T.B |
76.5—81 |
73-81 |
70-81 |
HNO3-Soluble-boron |
0.5 max |
0.6 max |
-- |
Water-soluble-born |
0.2 max |
0.2 max |
0.1 max |
F |
25mg/g max |
25mg/g max |
--- |
CHL |
75 max |
75 max |
--- |
CA |
0.3 max |
0.3 max |
--- |
Fe |
1.0 max |
1.0 max |
2.0 max |
T (B + C) |
98 min |
97 min |
94 min |
Boron Carbide Production Property | ||
Materal |
B4C product |
SiC products |
Density (gNaN-3) min |
2.45 |
3.06 |
Melting Point (°C) |
2450 |
2600(solution) |
Micron Hardness (Knoop) (kgf/mm-2) min |
2500 |
2300 |
Bending Strength (MPa) min |
400 |
350 |
Operation Environment |
High temperatur, high Pressure, heavy grinding, strong alkali,strong acid |
High temperatur, high Pressure, heavy grinding, strong alkali,strong acid,high temperature oxidation, high temperature gas, pulp waste liquor |
Applications | |
1. Refractory material |
8.Tool and die fabrication |
2.Armor |
9.Ultra-sonic machining |
3.Nozzle |
10.Spraying of boron carbide |
4.Abrasive field |
11.Spray sand |
5.Honing stones |
12.chemistry field |
6.Metal matrix composites |
13.Consumer products |
7.Nuclear Technology |
14.computer |
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