Boron carbide alias black diamond, mohs hardness 9.3, with low density, high strength, high temperature stability and good chemical stability, and acid, alkali solution does not react, with high chemical potential, neutron absorption, wear resistance and semiconductor conductivity. It is used for grinding, grinding, drilling and polishing hard materials such as hard alloy and gemstone as neutron absorber in nuclear power plant. Military use for sintered boron carbide bulletproof ceramic armor.
Standard comparison table for boron carbide products
日本JIS.R6001.1998（电阻法）
ISO86/FEPA84
国标 GB2476-83-83
粒度号
D0
D3
D50
D94
粒度号
D3 max.
D50
D94 min.
粒度
基本粒范围
#240
127
103
57±3
40
/
/
/
/
W63
63-50
#280
112
87
48±3
33
F230
82
50-56
34
W50
50-40
#320
98
74
40±2.5
27
F240
70
42.5-46.5
28
#360
86
66
35±2
23
F280
59
35-38
22
W40
40-28
#400
75
58
30±2
20
F320
49
27.7-30.7
16.5
#500
63
50
25±2
16
W28
20-28
#600
53
43
20±1.5
13
F360
40
21.3-24.3
12
#700
45
37
17±1.3
11
F400
32
16.3-18.3
8
W20
20-14
#800
38
31
14±1
9
#1000
32
27
11.5±1
7
F500
25
11.8-13.8
5
W14
14-10
#1200
27
23
9.5±0.8
5.5
F600
19
8.3-10.3
3
#1500
23
20
8±0.6
4.5
W10
10-7
#2000
19
17
6.7±0.6
4
F800
14
5.5-7.5
2
#2500
16
14
5.5±0.5
3
W7
7-5
#3000
13
11
4±0.5
2
F1000
10
3.7-5.3
1
#4000
11
8
3±0.4
1.3
F1200
7
2.5-3.5
1(80%处)
W5
5-3.5
#6000
8
5
2±0.4
0.8
W3.5
3.5-2.5
#8000
6
3.5
1.2±0.3
0.6
W2.5
2.5-1.5
W1.5
1.5-1.0
W0.5
1.0-0.5
