|
 |
 |
|
| Boron Carbide |
|
Boron Carbide, a black powder, is the hardest of the conventional abrasives, Its Mohs hardness is 9.6, melting point 2450＜C,density 2.52g/cm3. It has following unique features: neutron absorbing,of semi-conductivity, low thermal conductivity,high grinding efficiency and no reaction with either acids or alkali etc. Boron carbide is widely used to grind and polish hard metal alloy, super-hard metal, high carbide steel, jewel, hard ceramic and other hard materials, to manufacture wear-resisting parts, metal cutting tools, nozzles and neutron-absorbing rods, used as metal additive for compound materials for military planes and as raw materials for matal boride, metal ceramic, boron steel, boron alloy and for special welding and refractory materials
|
 |
|
| |
| 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
μm |
T.B%
|
T.C%
|
Fe2O3%
|
Si%
|
BC%
|
F60 |
250 |
77-80 |
19-21 |
0.25
-0.45 |
0.2
-0.4 |
96-98 |
F70 |
212 |
F80 |
180 |
F90 |
150 |
F100 |
125 |
F120 |
106 |
F150 |
75 |
F180 |
75-63 |
76-79 |
17-19 |
0.25
-0.45 |
0.2
-0.4
|
95-97 |
F220 |
63-53 |
F230 |
53+/_3.0 |
F240 |
44.5+/_2.0 |
F280 |
36.5+/_1.5 |
75-79 |
17-20 |
0.3
-0.6 |
0.3
-0.8 |
93-97 |
F320 |
29.2+/_1.5 |
F360 |
22.8+/_1.5 |
F400 |
17.3+/_1.0 |
F500 |
12.8+/_1.0 |
74-78 |
17-20 |
0.4
-0.8 |
0.4
-1.0 |
90-94 |
F600 |
9.3+/_1.0 |
F800 |
6.5+/_1.0 |
F1000 |
4.5+/_0.8 |
73-77 |
17-20 |
0.5
-1.0 |
0.4
-1.2 |
89-92 |
F1200 |
3.0+/_0.5 |
F1500 |
3+/_0.8 |
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 (g.cm-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 |
|
|
Tel/Fax: + 86 755 83660116, info@kaiteindustry.cn, szkaite@hotmail.com
Copyright Kaitexin All rights reserved. |
|
|
|
