化學成份 |
90%瓷球 |
99%瓷球 |
99.5%瓷球 |
Al2O3 |
>90% |
>99% |
>99.5% |
SiO2 |
<7% |
<0.2% |
<0.15% |
Fe2O3 |
<0.5% |
<0.1% |
<0.1% |
Na2O+K2O |
<1.0% |
<1.0% |
<0.4% |
MgO+CaO |
<1% |
<0.2% |
<0.2% |
|
|
|
|
1.9kg/L |
|
莫氏硬度 |
9級 |
9級 |
9級 |
9級 |
|
抗沖擊力(從6米高度自由落體掉在25mm厚鋼板上無破碎) |
通過 |
通過 |
通過 |
通過 |
|
單個抗壓強度(千牛) |
3mm |
0.4 |
0.5 |
0.6 |
0.6 |
6mm |
1.3 |
1.5 |
1.6 |
1.6 |
|
10mm |
5 |
6 |
6 |
6 |
|
13mm |
7 |
8 |
8 |
8 |
|
16mm |
15 |
9 |
13 |
13 |
|
19mm |
17 |
18 |
19 |
19 |
|
25mm |
22 |
20 |
22 |
22 |
|
38mm |
35 |
37 |
40 |
40 |
|
50mm |
40 |
42 |
45 |
45 |
|
76mm |
50 |
55 |
60 |
60 |