| PRODUCT |
| carborundum |
 |
| |
| index |
chemical composition £¥ |
| SiC, >= |
Free Carbon
<= |
Al2O3, >= |
| black carborundum |
98.50 |
0.20 |
0.60 |
| 98.00 |
0.30 |
0.80 |
| 97.00 |
1.50 |
1.20 |
| 90.00 |
4.0 |
1.50 |
| green carborundum |
99.00 |
0.20 |
0.20 |
| 98.50 |
0.25 |
0.50 |
| 97.50 |
0.25 |
0.70 |
| 97.00 |
0.30 |
0.70 |
| 95.50 |
0.30 |
0.70 |
| 94.00 |
0.50 |
0.70 | |
|
