| Color |
Name |
HRC |
Recommend granularity |
Range of application |
 |
Blue
green |
0-5 |
30-50 |
Extremely hard, compact& complete and weakly abrasive formation. |
 |
Gold |
5-10 |
||
 |
Black |
10-15 |
40-60 |
Hard, compact& complete and weakly abrasive formation. |
 |
White |
15-20 |
||
 |
Medium
grey |
20-25 |
50-70 |
Hard, partial fracture development，medium-abrasive formation. |
 |
Red |
25-30 |
||
 |
Medium
yellow |
30-35 |
60-70 |
Medium hard，partial fracture development， partial fracture development |
 |
Green |
35-40 |
||
 |
scarlet |
40-45 |
70-80 |
Hard
and strong abrasive, hard and fragile formation. |
 |
Blue |
45-50 |
||
 |
Grass
green |
50-55 |
80-100 |
Hard
and strong abrasive, hard and fragile formation. |
 |
sparkle silver |
55-60 |
